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{{Infobox automobile
| name         = Isuzu Gemini
| manufacturer = {{ubl|[[Isuzu]] (1974–1993)|[[Honda]] (1993–2000)}}
| production   = 1974–2000 (Japan)
| image        = Isuzu FF Gemini CC JT150.jpg
| caption      = Isuzu Gemini FF hatchback
| class        = [[Subcompact car]]
| layout       = {{ubl|[[FR layout]] (1974–1987)|[[FF layout]] (1985–2000)|[[Front-engine, four-wheel-drive layout|Front engine]], [[four-wheel drive]] (1990–1993)}}
| predecessor  = [[Isuzu Bellett]]
| assembly     = {{ubl
  | Japan: [[Kawasaki, Kanagawa]] ([[Isuzu#Japan|Kawasaki Plant]]: 1974–2000)
  | Philippines: [[Dasmariñas, Cavite]] (GM Pilipinas; first and second generation models)<ref>{{Cite web |date=2021-06-04 |title=The Isuzu Gemini used to be common, but now it's truly rare |url=https://visor.ph/cars/the-isuzu-gemini-used-to-be-common-but-now-its-truly-rare/ |access-date=2024-09-24 |website=Visor |language=en}}</ref><ref>{{Cite web |date=2012-06-07 |title=1987 Isuzu Gemini [JT] |url=https://www.imcdb.org/v507467.html| website=Imcdb.org |language=en}}</ref>
  }}
}}

The '''Isuzu Gemini''' is a [[subcompact car]] produced by the Japanese automaker [[Isuzu]] from 1974 until 2000. The same basic product was built and/or sold under several other names, sometimes by other [[General Motors]] brands, in various markets around the world. While the first generation was of a [[rear-wheel drive]] design, later versions were all [[front-wheel-drive]], and the last two generations were no more than badge-engineered [[Honda Domani]] until the name was retired in 2000.

__TOC__
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{{anchor|PF|PF50|PF60|PFD60}}

==First generation (1974) <span class="anchor" id="First"></span><span class="anchor" id="first"></span>==
{{Infobox automobile
| name       = First generation (PF)
| aka        = {{ubl | Isuzu Bellett Gemini | Isuzu I-Mark | Buick Opel (US) | [[Holden Gemini]] | [[Opel]] by Isuzu (US) | Opel Gemini ([[Malaysia]] and [[Thailand]])| [[Opel Kadett C]] | [[Daewoo Maepsy|Saehan Gemini/Bird]]}}
| image      = 1975 Isuzu Bellett Gemini LT.jpg
| caption    = 1975 Isuzu Bellet Gemini
| production = November 1974 – February 1987
| body_style = {{ubl|2-door [[coupé]]|4-door [[sedan (car)|sedan]]}}
| engine     = {{ubl
  | '''[[Petrol engine|petrol]]:'''
  | 1584&nbsp;cc ''[[List of Isuzu engines#G161|G161Z]]'' [[Straight-four engine|I4]]
  | 1817&nbsp;cc ''[[List of Isuzu engines#G180|G180Z]]'' I4
  | 1817&nbsp;cc ''[[List of Isuzu engines#G180|G180W]]'' [[DOHC]] I4
  | '''[[Diesel engine|diesel]]:'''
  | 1817&nbsp;cc ''[[List of Isuzu engines#4FB1|4FB1]]'' I4
  | 1817&nbsp;cc ''[[List of Isuzu engines#4FB1|4FB1T]]'' [[Turbodiesel|turbo]] I4
  }}
| platform   = [[GM T platform (RWD)|T-body]]
| layout     = [[FR layout]]
| length     = {{convert|4135|mm|in|1|abbr=on}}
| width      = {{convert|1570|mm|in|1|abbr=on}}
| height     = {{convert|1365|mm|in|1|abbr=on}}
| wheelbase  = {{convert|2405|mm|in|1|abbr=on}}
| weight     = {{convert|930|kg|lb|0|abbr=on}}
| related    = {{ubl | [[Isuzu Piazza]] | [[Chevrolet Chevette]] | [[Daewoo Maepsy]] | [[Opel Kadett C|Opel Kadett]] | [[Vauxhall Chevette]]}}
}}

The first Gemini was initially sold as the '''Bellett Gemini''' to connect it to its [[Isuzu Bellett|predecessor]] when it was introduced in November 1974. The "Bellett" portion of the name was dropped in April 1975. It was based on the third-generation [[Opel Kadett C]] on the [[GM T platform (RWD)|General Motors T-car]] platform and came in four-door [[sedan (car)|sedan]] and two-door [[coupe]] body styles. The chassis code was '''PF50''', although the later 1.8-liter versions were called '''PF60''' and the diesels '''PFD60'''.<ref name="CG80">{{citation | title = Car Graphic: Car Archives Vol. 11, '80s Japanese Cars | publisher = Nigensha | year = 2007 | language = Japanese | page = 239 | location = Tokyo | isbn = 978-4-544-91018-6 }}</ref>

In June 1977, the Gemini received its first, light, facelift. The bigger 1817&nbsp;cc G180 series engine became available, fitted with rectangular headlights rather than the round units used on the 1600. This model offered {{convert|110|PS|kW|0|abbr=on}}, although this output dropped to {{convert|105|PS|kW|0|abbr=on}} if an automatic transmission was fitted.<ref name="WC78">{{Cite book | title = World Cars 1978 | publisher = The Automobile Club of Italy/Herald Books | editor-last = Lösch | editor-first = Annamaria | location = Pelham, NY | page = 351 | ref = WC78 | year = 1978 | isbn = 978-0-910714-10-5 }}</ref> In November of the same year the 1600 was updated, now with square headlights and an engine with the I·CAS [[Catalytic converter#Two-way|oxidation catalyst]] ("Isuzu Clean Air System") which could manage the 1978 emissions standards.<ref name=Catvol25>{{citation | ref = JAMA25 | title = 自動車ガイドブック |trans-title=Japanese Motor Vehicles Guide Book 1978/1979 | language = Japanese | volume = 25 | date = 1978-10-10 | publisher = [[Japan Automobile Manufacturers Association]] | location = Japan | page = 109 | id = 0053-780025-3400 }}</ref> One year later the Gemini 1800's engine was also upgraded to meet the 1978 emissions standards.<ref name=Catvol26>{{citation | ref = JAMA26 | title = 自動車ガイドブック |trans-title=Japanese Motor Vehicles Guide Book 1979/1980 | language = Japanese | volume = 26 | date = 1979-11-01 | publisher = [[Japan Automobile Manufacturers Association]] | location = Japan | page = 113 | id = 053-790026-3400 }}</ref> Power remained unchanged, and the automatic now offered the same power as cars with manual transmission.<ref>''[[#JAMA26|Automobile Guide Book 1979/1980]]'', p. 168</ref> The ignition system was now of a transistor less type, and the trunk lid was now opened remotely (not added to the Gemini 1600 until the end of December). The Gemini Black and 1800 Minx were also added, the Minx with a two-tone paintjob and the Black with black paintwork and more sporty yet comfortable equipment including alloy wheels.<ref name=Catvol26/>

[[File:1979-1982 Holden TE Gemini SL sedan.jpg|thumb|left|1979 facelift [[Holden Gemini]] (Holden built and badged version for the Australian market)]]
In June 1979,<ref name="CG80"/> the Gemini received a new slant nose with rectangular headlights and a redesigned rear end. The changes were actually more comprehensive than that, also including a redesigned (longer) engine bay and a wider radiator opening for two new engines added in November (the twin cam G180W and the new 4FB1 diesel) which both required wider radiators for more air for cooling.<ref>{{citation | first = Jack K. | last = Yamaguchi | editor-last = Lösch | editor-first = Annamaria | journal = World Cars 1980 | title = Consummation of the Turbulent Decade | publisher = L'Editrice dell'Automobile LEA/Herald Books | location = Pelham, NY | page = 66 | year = 1980 | isbn = 978-0-910714-12-9 }}</ref>

In Japan, sports models were available originally with the "ZZ" name. Later, ZZ/L (1980), ZZ/R (1981), ZZ/T, and ZZ/E models were added. These were equipped with an Isuzu G180W 8-valve DOHC 1.8-liter engine, most commonly fuel-injected, producing {{convert|130|PS|kW|0|abbr=on}} at 6400&nbsp;rpm. These models also came with a shortened remote throw manual shift lever and optional factory LSD differential.<ref name=eichithree>{{Cite book | ref = Eichi3 |script-title =ja:絶版車カタログ 国産車編 Part3 1970~1979 |trans-title=Japanese Historic Car Graffiti: Car Catalog part 3, 1970–1979 | language = Japanese | publisher = [[:ja:英知出版|Eichi Publishing (英知出版)]] | series = Eichi Mook | location = Tokyo | page = 57 | year = 1997 | isbn = 978-4-89461-004-0 }}</ref> There was also a mildly sporting model of the OHC 1800, called the LS/G.

In October 1982, a version of the diesel with Bosch VE electronic fuel injection was also added; this provided 8% more power than the regular version (66 versus 61&nbsp;PS) and was fitted to the LT-E and LJ-E models. For those who wanted more, a {{convert|73|PS|kW|0|abbr=on}} turbo diesel appeared a month later. Also featuring electronic fuel injection, this model also received a standard rear anti-roll bar. Counterintuitively, the two more powerful diesels were never available with the coupé bodywork.<ref name="WC84">{{Cite book | title = World Cars 1984 | publisher = L'Editrice dell'Automobile LEA/Herald Books | location = Pelham, NY | pages = 344–345 | year = 1984 | isbn = 978-0-910714-16-7 }}</ref>

The Gemini was complemented in 1981 by the [[Giugiaro]]-designed coupé [[Isuzu Piazza]], based on the Gemini's platform, which was introduced in the United States in 1983 as the [[Isuzu Impulse]] and in Australia in 1986 as the Holden Piazza. After the front-wheel-drive second generation Gemini appeared in early 1985, the old rear-wheel drive version nonetheless continued to be built. The coupé model was discontinued, and a slimmed down sedan range (including the ZZ and diesel models) continued to be available. This diminished range was produced until February 1987, when the rear-wheel drive Gemini was laid to rest after 768,537 had been built.

===In other markets===
[[File:1976 Buick Opel - 90,000km (16816206825).jpg|left|thumb|1976 Opel by Isuzu, a rebadging for the US]]
;North America
The North American market version was originally sold as the "Opel by Isuzu" and then the Buick Opel (sometimes referred to as the "Buick Isuzu Opel"). It first appeared in late 1975, for the 1976 model year, and replaced the German-built Kadett which had become too expensive as a result of the weakening dollar and rising costs in Germany.<ref name=GM2000>{{cite book | title = General Motors in the Twentieth Century | editor-last1 = Binder | editor-first1 = Alan K. | editor-last2 = Ferris | editor-first2 = Deebe | date = 2000 | publisher = Ward's Communications | isbn = 978-0-910589-52-9 | location = Southfield, MI | page = 130 | ref = GM20th }}</ref> Road & Track decried the switch, stating that the Isuzu felt "built to a price" and that unlike the real Opel, it was "one of our least favorite cars."<ref name=RTbg79>{{citation | ref = RT79 | title = Road & Track's Road Test Annual & Buyer's Guide 1979 | date = January–February 1979 | publisher = CBS Publications | location = Greenwich, CT | page = 85 }}</ref> In 1978 a "Sports Coupé" was added to the lineup, its changes being limited to the paint, different steel wheels, sporty mirrors, and a spoiler. For 1979 the car received a light cosmetic update with ribbed velour trim, a few new paint options, and rectangular headlights.<ref name=RTbg79/>

18,801 model year 1978 Buick Opels were sold, followed by 17,564 in 1979.<ref name=Wards80>{{cite book | ref = WYB80 | title=Ward's Automotive Yearbook 1980 |publisher=Ward's Communications, Inc | location = Detroit, MI |editor-last = Stark | editor-first = Harry A. | volume = 42 | date = 1980 | page = 203 | lccn = 40-33639 }}</ref> In the middle of the calendar year the model was dropped, but supplies lasted long enough for another 950 cars to be sold during 1980.<ref name=Wards80/>

For the 1981 model year, the "Buick Opel" metamorphosed into the "'''Isuzu I-Mark'''".<ref name="scimp">{{Cite book | ref =SCimp | title = Standard Catalog of Imported Cars, 1946–1990 | first = James M. | last = Flammang | publisher = Krause Publications, Inc. | location = Iola, WI | page = 308 | year = 1994 | isbn = 978-0-87341-158-5 }}</ref> Unlike the Buick-badged versions the I-Mark was also available with a diesel engine, but the standard engine was a {{cvt|78|hp|kW|0}} (SAE net) version of the 1.8&nbsp;litre G180Z engine.<ref name="AR83">{{cite book | title = Automobil Revue '83 | editor-last = Büschi | editor-first = Hans-Ulrich | publisher = Hallwag, AG | language = German, French | page = 337 | location = Berne, Switzerland | volume = 78 | date = March 10, 1983 | isbn = 978-3-444-06065-6 }}</ref> The diesel had a claimed {{cvt|51|hp|kW|0}} (SAE net) at an unusually high 5,000&nbsp;rpm. The I-Mark was offered with four-door sedan or two-door coupé bodywork with either engine, in Deluxe or fully equipped LS (added for the 1982 model year) trim. A 5-speed manual or a 3-speed automatic were on offer. There was also a base diesel-engined coupé on offer, with a 4-speed manual transmission only.<ref name=IMark82>{{citation | type = brochure | title = 1982 Isuzu I-Mark | publisher = American Isuzu Motors Inc. | id = AIMI-MKT-010 | date = October 1981 | page = 12 }}</ref> The diesel gradually lost sales after USA's brief love affair with the [[Diesel engine|diesel]] car came to an end in the early eighties, and eventually it was only available in a single coupé version.<ref name="scimp"/> For 1985, the rear-wheel-drive I-Mark's last year, only the Deluxe sedan version with the gasoline engine remained available.<ref name=1985Isu>{{citation | type = Press Release | title = 1985 Isuzu Models Announced | date = September 1984 | publisher = American Isuzu Motors Inc. | location = Whittier, CA }}</ref> Power remained at {{cvt|78|hp|kW|0}} at 4,800&nbsp;rpm.<ref name=Wards85>{{cite journal | ref = WYB85 | title = End of Restraints, New Entries Seen Bolstering Record-Setting Import Sales in 1985 and Beyond | journal = Ward's Automotive Yearbook 1985 |publisher=Ward's Communications, Inc | location = Detroit, MI | last = Binder | first = Alan | volume = 47 | date = 1985 | page = 160 | isbn = ((0910589005)) }}</ref>

;Australasia
Early Australian cars, from the 1975 launch, were badged Holden-Isuzu. In addition to sedan and coupé models, [[Holden]] in Australia produced the Gemini as a three-door [[station wagon]] and three-door [[panel van]], which were derived from the [[Opel Kadett]] C Caravan and [[Vauxhall Chevette]] wagon, with Isuzu Gemini front panels. The panel van's side panels came from the [[Bedford Chevanne]]. The Australian [[Holden Gemini]] was fitted with an Isuzu G161Z petrol engine, although 1979 and later models were available with a 1.8-litre 8-valve SOHC diesel engine (4FB1). The more common G161Z was a 1.6-liter 8-valve SOHC fed by a Nikki carburettor. The Holden Gemini was ''[[Wheels (magazine)|Wheels]]'' [[Car of the Year]] for 1975.

It was also assembled and sold in New Zealand from 1977 to 1984. The car received Isuzu badging for the first few years in this market, as the brand had already been established by the earlier Bellett, which had also been assembled locally.

;Other markets
In Europe, the Gemini was equipped with the 1.6-liter engine which produced {{convert|68|PS|kW|abbr=on}} DIN there; the discrepancy in stated power (down 32 percent) may have been entirely due to the differences to the SAE (gross) measuring system used on Japanese market cars.

Isuzu Gemini was also sold in South Korea as the [[Saehan Gemini]], whose manufacturer became [[GM Daewoo|Daewoo Motors]] in 1982. It then became [[Daewoo Maepsy]] after 1982 and remained on sale (later as the '''Maepsy-Na''' after a facelift) until it was replaced by the [[Daewoo LeMans]] in 1986. It continued to be assembled as a taxi model called '''Maepsy Sigma''' until 1989.

Sold as:
* 1975–1984 – '''[[Holden Gemini]]''' – Australia, New Zealand, [[Indonesia]], Kuwait
* 1975–1983 – '''Opel Gemini''' – Malaysia, Thailand
* 1976-1987 – '''[[Chevrolet Chevette]]''' – Brazil
* 1976–1979 – '''Opel Isuzu'''/'''Buick Opel''' – United States
* 1977–1982 – '''[[Saehan Gemini]]''' – South Korea ("Saehan Bird" in the export)
* 1982–1986 – '''Saehan/Daewoo Maepsy/Maepsy-Na/Maepsy Sigma''' – South Korea
* 1982–1988 – '''Saehan/Daewoo Max''' – pickup version, South Korea
* 1981–1984 – '''Isuzu I-Mark''' – North America

{{clear_left}}
<gallery widths="210px" heights="130px">
File:Isuzu Gemini PF Osaka JPN 002.jpg|Rear view of early Gemini four-door (Japan)
File:GEMINI(PF60).jpg|Post-1983 Gemini ZZ-R (PF60)
File:Isuzu I-Mark Coupé (01).jpg|Isuzu I-Mark Coupé (North America)
</gallery>
{{clear}}

== Second generation (1985)<span class="anchor" id="JT150"></span><span class="anchor" id="JT190"></span><span class="anchor" id="RB"></span><span class="anchor" id="Spectrum"></span><span class="anchor" id="Geo"></span><span class="anchor" id="Second"></span><span class="anchor" id="second"></span><span class="anchor" id="1985"></span>==
{{Infobox automobile
| name        = Second generation
| image       = Isuzu Gemini 201.JPG
| aka         = {{ubl|Isuzu I-Mark|Chevrolet Spectrum|Geo Spectrum|Pontiac Sunburst|Chevrolet Gemini|Holden Gemini}}
| production  = 1985–1990
| predecessor = {{ubl|[[Chevrolet Chevette]] (Spectrum)|[[Opel Isuzu]] (I-Mark)|[[Acadian (automobile)|Pontiac Acadian]] (Sunburst)}}
| successor   = {{ubl|[[Isuzu Stylus]] (I-Mark)|[[Passport Optima]] (Sunburst)|[[Geo Storm]] (Spectrum, hatchback)|[[Geo Prizm]] (Spectrum, sedan)}}
| body_style   = {{ubl|3-door [[hatchback]]|4-door [[Sedan (car)|sedan]]}}
| platform     = [[GM R platform|R-body]]
| wheelbase    = {{cvt|2400|mm|in|1}}
| length       = {{ubl|Hatchback: {{cvt|3995|mm|in|1}}| Sedan: {{cvt|4070|mm|in|1}}}}
| width        = {{cvt|1615|mm|in|1}}
| height       = {{cvt|1370–1405|mm|in|1}}
| engine       = {{ubl | 1297&nbsp;cc ''[[List of Isuzu engines#4XB1|4XB1]]'' [[Inline-four engine|I4]] (JT140, export only) | 1471&nbsp;cc ''[[List of Isuzu engines#4XC1|4XC1 (LC5)]]'' I4 (JT150) | 1471&nbsp;cc ''[[List of Isuzu engines#4XC1|4XC1-T (LC0)]]'' [[Turbocharger|turbo]] I4 (JT150) | 1588&nbsp;cc ''[[List of Isuzu engines#4XE1|4XE1]]'' [[DOHC]] I4 (JT190) | 1487&nbsp;cc ''[[List of Isuzu engines#4EC1|4EC1]]'' [[Diesel engine|diesel]]/[[Turbodiesel|TD]] I4 (JT600)}}
| transmission = {{ubl|3-speed [[Automatic transmission|automatic]]|5-speed [[Manual transmission|manual]]|5-speed [[semi-automatic transmission|semi-automatic]] ([[NAVi5]])}}
| layout       = [[FF layout]]
| related      = 
| designer     = [[Giorgetto Giugiaro]]
}}
[[File:Isuzu Gemini CC.jpg|left|thumb|Pre-facelift Gemini FF (JT150)]]
[[File:Isuzu-GeminiIrmscher.JPG|thumb|left|Pre-facelift Gemini Irmscher (JT150)]]
[[File:1986 Holden Gemini (RB) SLX sedan (2011-04-22) 02.jpg|thumb|left|1985–1987 Holden Gemini (RB) SL/X]]
[[File:'88-'89 Isuzu I-Mark Hatchback.jpg|left|thumb|1988–89 Isuzu I-Mark hatchback coupe (North America)]]
[[File:Geo Chevrolet Spectrum.jpg|thumb|left|1989 Chevrolet/Geo Spectrum]]
[[File:Isuzu 4XE1 engine 01.jpg|thumb|left| Isuzu ''[[List of Isuzu engines#4XE1|4XE1]]'' 1.6L Engine (JT190)]]

[[General Motors]] sought a replacement for their world car [[GM T platform (RWD)|T-body]] [[Opel Kadett|Kadett]] / Gemini, and this time, instead of building one design on several continents, they decided to build a world car in one location and export it to several continents. As a considerable portion of the T-body manufacturing had been turned over to Isuzu in Japan for economic reasons, so would the manufacturing of the replacement. In 1984, Isuzu again commissioned [[Giorgetto Giugiaro]] who was responsible for the [[Isuzu 117 Coupé|117 Coupé]] and the [[Isuzu Piazza|Piazza]]. This time, he was to design an economy car on the new [[front-wheel drive]] [[GM R platform|R-body platform]]. The R-body featured a [[MacPherson strut]] front suspension and beam axle rear suspension, which foreshadowed most of GM's offerings through their current model lineup. [[Giorgetto Giugiaro|Giugiaro]]'s design followed the [[Isuzu Piazza|Piazza]] design very closely in shape and detail, though the proportions made the Gemini appear shorter and taller in its three-door version, and a four-door [[sedan (car)|sedan]] (notch back) was also designed.

Unfortunately for everyone involved, Isuzu presented the designs to GM prior to freezing them, and GM ordered a number of detail changes to them without ever consulting the designer, Giugiaro, which was taken as an insult, and ended the long relationship between the noted Italian designer and Japan's second oldest car builder. The insult was serious enough to Giugiaro that he denied the design was his until a decade after the vehicle went out of production.

The R-body Gemini was introduced in May 1985 as the ''Gemini FF'' (after it had already gone on sale as a Chevrolet in the United States), with an all-new line of engines. In Japan, originally with chassis code JT150, it was available with a carburetted 1.5-liter SOHC engine. An also newly developed 1.5-liter [[Inline-four engine|inline four]] [[diesel engine]] (JT600) was added to the lineup in November. At the other end of the lineup, a {{convert|120|PS|kW|0|abbr=on}} fuel-injected and turbocharged version of the 1.5-liter [[List of Isuzu engines#4XC1|4XC1]] engine ("[[Irmscher]]") was added in May 1986. Originally, the transmission started out with a choice of a 5-speed manual or a 3-speed automatic, but [[NAVi5]], an [[semi-automatic transmission|automated manual transmission]], was added in 1986.

The FF Gemini underwent a facelift in February 1987, receiving a more aggressive front styling with wraparound headlight as well as other minor changes. At the same time, the "FF" moniker was dropped, as parallel production of the preceding RWD Gemini came to an end. In March 1987 the Gemini saw its European premiere, at the [[Geneva Motor Show]]. European sales of the already somewhat dated Gemini were disappointing, and Isuzu soon withdrew from the European passenger car market entirely.

A 1.6-liter [[DOHC]] engine with {{convert|135|PS|kW|0|abbr=on}} was introduced in February 1988. Export versions were also available with a smaller 1.3-liter four to suit taxation systems based on displacement.<ref name=TAM90>{{Cite book | title = Quattroruote: Tutte le Auto del Mondo 1990 | editor = Mastrostefano, Raffaele | publisher = Editoriale Domus S.p.A | year = 1990 | pages = 388–390 | language = Italian | location = Milano }}</ref> This offered {{convert|72|PS|kW|0|abbr=on}}, while export specification 1.5s had {{convert|76|PS|kW|0|abbr=on}} on tap and the naturally aspirated diesel offered {{convert|52|PS|kW|0|abbr=on}} outside Japan.<ref name=Ruiz>{{cite book | last = Ruiz | first = Marco | title = 'The Complete History of the Japanese Car: 1907 to the Present | publisher = ERVIN srl | location = Rome | year = 1986 | page = 132 | isbn = 978-0-517-61777-9 }}</ref> Trim levels were widely varied, from basic models ("C/C" in Japan, "LT" in general export markets, and "S" in the US) to Irmscher, ZZ, and Lotus Tuned versions, and plenty of optional equipment and dealer options were available.

A second minor change was released in February 1989 for Japan only. The position of the rear license plate garnish for the sedan model has been moved from the trunk lid to the center part of the bumper. Other differences include the amber turn indicators lens now having been dropped, and an addition of side marker lights. In total, 748,216 second generation Geminis (under all nameplates) were built. 150,873 of these were sold as Isuzu I-Marks in the United States, while 363,171 were sold under the Chevrolet and Geo badges.

===North America===
In the US, the vehicle was available from [[Chevrolet]] (and as a [[Geo (automobile)|Geo]] beginning in mid-1988) as the Spectrum, or from Isuzu themselves, as the I-Mark. GM's Pontiac division sold the I-Mark as the Pontiac Sunburst in Canada from 1985 to 1988. Sales were limited to coastal markets initially, as [[Voluntary export restraints#1981VER|import quotas]] restricted the number of cars General Motors could sell in the United States.<ref>{{cite journal | journal = Advertising Age | date = 1985-02-18 | first = Jesse | last = Snyder | page = 74 | title = Old name, new partner add up to new Nova }}</ref> The Spectrum was presented at the end of November 1984, with cars initially going on sale in 16 eastern states. Isuzu's own I-Mark went on sale during the 1985 model year.<ref name=SC309>[[#SCimp|Flammang]], p. 309</ref> Due to the quotas, only 29,500 cars were available the first model year, about a quarter of what GM had hoped to be able to sell.<ref name=NYT84>{{cite journal | title = About Cars; Chevrolet's Trio Challenge Imports | journal = The New York Times | url = https://www.nytimes.com/1984/11/25/sports/about-cars-chevrolet-s-trio-challenge-imports.html | date = 1984-11-25 | last = Schuon | first = Marshall }}</ref>

The introductory model years featured a unique eggcrate grille flanked by single square sealed-beam headlights, but for 1987 the Spectrum (and I-Mark) received the restyled front end with "cat's eyes" headlights and 5-mph bumpers. The interior was also revamped, and the {{cvt|105|hp|kW|0}} Spectrum Turbo was added to the lineup. Isuzu's turbocharged version, dubbed RS, was a later introduction, arriving early in calendar year 1987.<ref name=CD1186C>{{cite magazine | ref = CD1186 | magazine = [[Car and Driver]] | date = November 1986 | volume = 32 | issue = 5 | page = 60 | title = Charting the Changes | publisher = CBS Magazines | last = Ceppos | first = Rich }}</ref> The Spectrum Turbo was only available as a four-door sedan, while the I-Mark RS was only available as a hatchback.

US sales of the Isuzu I-Mark were down by half for the latter half of 1989, as a lengthy changeover to the new models slowed down production in Japan.<ref name=Wards90>{{cite book | ref = WYB90 | title=Ward's Automotive Yearbook 1990 | publisher = Ward's Communications, Inc | location = Detroit, MI | editor-last1 = Stark | editor-first1 = Harry A. | editor-last2 = Bush | editor-first2 = James W. | volume = 52 | date = 1990 | page = 117 | isbn = ((0910589010)) }}</ref> Isuzu was contractually obliged to supply a certain number of Geo Spectrums, meaning that there were very few I-Marks available for Isuzu's own dealers. With a delayed introduction of the upcoming Stylus (third generation Gemini), Isuzu largely abandoned the passenger car segment for nearly a year, selling mostly leftover stock of the old [[Isuzu Piazza#JR120|Impulse]].<ref name=Wards90/>

GM Canada replaced the Sunburst with the Passport Optima for 1988. For GM, this was an entry-level vehicle to attract young buyers and to compete with Japanese midsize cars in the US market. Chevrolet's Spectrum lacked many of the options and equipment of the I-Mark, although with the exception of a brief run of decontented hatchbacks in 1988 dubbed "Spectrum Express" they were not as austere as the base trim levels of contemporary [[Dodge Colt]], [[Toyota Tercel]] and [[Honda Civic]]s. Both the Chevrolet and the Isuzu were available with the {{cvt|70|hp|kW|0}} 1.5-liter SOHC non-turbo and {{cvt|110|hp|kW|0}} turbo engines, but neither diesel engines nor NAVi5 were offered in the US. The turbocharged I-Mark was called the RS model in 1988 and then changed to the LS model in 1989. The I-Mark was available with the {{convert|125|hp|kW|0|abbr=on}} 1.6-liter DOHC engine in 1989 only, as the RS model. In 1988 and 1989, the LS and RS models were offered with Lotus Tuned Suspension, the sportier suspension featuring more rigid dampers, alternate spring rates, and bigger sway bars.

For 1988, the Chevrolet Spectrum was available as the base model, with a better equipped LS package, or as the Turbo Sedan. There was also a Spectrum Sport Coupe package (hatchback only) on offer, using the standard engine combined with some of the Turbo's equipment, such as a sporty steering wheel, different rear view mirrors, a rear spoiler, fully body colored exterior (grille, bumpers, door handles, etcetera), and the uprated F41 suspension.<ref>{{citation | title = 1988 Chevrolet Spectrum | type = brochure | publisher = General Motors Corporation | date = August 1987 | id = 4720 | page = 14 }}</ref> The 1989 Geo Spectrum (introduced in June 1988 as an early 1989 model year) was only available with the naturally aspirated 1.5-liter engine in a single equipment level, with either the three-door hatchback or four-door sedan bodywork.

Sold as:
* 1985–1989 '''Isuzu I-Mark''' – United States, Canada
* 1985–1990 '''Isuzu Gemini''' – Japan, Europe, Central America and Middle East
* 1985–1988 '''Chevrolet Spectrum''' – United States & Canada
* 1989 '''Geo Spectrum''' – United States
* 1985–1988 '''Pontiac Sunburst''' – Canada and Middle East
* 1985–1990 '''Holden Gemini''' – Australia, New Zealand and Indonesia
* 1985–1990 '''Chevrolet Gemini''' – Ecuador, Chile and Argentina

{{clear}}

{{anchor|Third|Stylus|JT151|JT191|JT641}}

==Third generation (1990)==
{{Infobox automobile
| name       = Third generation
| image      = 1990-1993 Isuzu Gemini (JT151) sedan 01.jpg
| aka        = Isuzu Stylus
| production = 1990–1993
| body_style   = {{ubl|2-door [[coupe]]|3-door [[hatchback]]|4-door [[sedan (car)|sedan]]}}
| platform     = [[GM R platform|R-body]]
| transmission = {{ubl|3-speed [[Automatic transmission|automatic]]|5-speed [[Manual transmission|manual]]}}
| engine       = {{ubl
  | '''[[Petrol engine|petrol]]:'''
  | 1.5&nbsp;L ''[[List of Isuzu engines#4XC1|4XC1]]'' [[SOHC]] [[Straight-four engine|I4]] (JT151)
  | 1.6&nbsp;L ''[[List of Isuzu engines#4XE1|4XE1]]'' SOHC/[[DOHC]] I4 (JT191)
  | 1.6&nbsp;L ''[[List of Isuzu engines#4XE1|4XE1-T]]'' [[Turbocharger|turbo]] DOHC I4 (JT191)
  | 1.8&nbsp;L ''[[Isuzu X engine|4XF1]]'' [[DOHC]] I4
  | '''[[Diesel engine|diesel]]:'''
  | 1.7&nbsp;L ''[[List of Isuzu engines#4EE1|4EE1-T]]'' SOHC [[Turbodiesel|TD]] I4 (JT641)
  }}
| wheelbase    = {{cvt|2450|mm|in|1}}
| length       = {{cvt|4185–4195|mm|in|1}}
| width        = {{ubl|{{cvt|1680|mm|in|1}} (Sedan) | {{cvt|1695|mm|in|1}} (Coupé/Hatch)}}
| height       = {{cvt|1325–1390|mm|in|1}}
| layout       = [[Front-engine, front-wheel-drive layout|Front engine]], [[front-wheel drive]] / [[four-wheel drive]]
| related      = {{ubl|[[Geo Storm]]|[[Isuzu Impulse]]|[[Asüna Sunfire]]}}
}}

[[File:91-92 Isuzu GEMINI Wagonback.JPG|thumb|left|1991–1993 Isuzu Gemini Hatchback]]
[[File:Isuzu Gemini 004.JPG|thumb|left|1991–1993 Isuzu Gemini sedan]]
The Gemini was redesigned for 1990, and the coupé version was now renamed the '''Gemini Coupé'''. The last models were produced in June 1993. The third generation sedan appeared in March 1990. Body size was wider than the previous generation. A liftback coupé was introduced in September 1990, with the three-door hatchback version added in March 1991. The last of the Isuzu-developed Geminis and its derivatives were sold as the Isuzu Impulse, Isuzu Piazza, Isuzu Gemini, Isuzu Stylus, Geo Storm, and Asüna Sunfire.

The Isuzu Gemini Coupé was the basis for the [[Isuzu Impulse]] and [[Geo Storm]] in the United States and Canada, and for the [[Asüna Sunfire]] which was sold in the Canadian market for the 1993 model year only. The Geo versions lacked some of the more expensive and advanced features of the Isuzu (and Asüna) versions. The 4-door sedan was sold as the '''Isuzu Stylus''' in the United States and Canada.

Model codes were JT151F for the front-wheel drive 1.5/1.6-litre gasoline versions, JT191F for the front-wheel drive 1600 DOHC model, and JT191S for the four-wheel drive, turbocharged "Irmscher R" version. Turbodiesels are JT641F/JT641S for front-wheel drive and four-wheel drive models respectively.

In North America, the base Stylus "S" model received a {{cvt|95|hp|kW|0}} 1.6 L SOHC version of the [[List of Isuzu engines#4XE1|4XE1]], available in 5-speed manual or 3-speed automatic transmissions. The 1990 and 1991 top-line Stylus "XS" models had a {{cvt|125|hp|kW|0}} 4XE1-UW 1.6 L naturally aspirated DOHC engine only available with a 5-speed manual transmission when introduced, and received the [[Isuzu X engine|4XF1]] {{cvt|140|hp|kW|0}} 1.8 L naturally aspirated DOHC engine with the 5-speed manual in its final 1992 model year. The Stylus initially was offered in two trim levels in 1990 and 1991, the base Stylus "S" with a 1.6 L SOHC 12-valve 4XE1 engine, and the top-level "XS" with the DOHC engine and the Lotus-tuned suspension. The XS also offered an optional power equipment package, which included power windows, power door locks, power mirrors, and a sunroof. This XS "Power Package" would evolve into the 1.8 L "RS" trim level for 1992, slotting above the "XS" trim for 1992. The DOHC Stylus (both "XS" and "RS") would be dropped after 1992, leaving the lone SOHC "S" trim for the final 1993 model year to stand alongside the Geo Storm platform triplet. The third platform triplet, the Impulse, would also be withdrawn after 1992 and was sold in Canada for 1993 only as the [[Asüna Sunfire]], as Isuzu was preparing its passenger car exit from the US market in July 1993.

The higher trim level packages offered "ZZ handling by Lotus" and "specification Irmscher" as the performance models in the lineup, but was carryovered from previous generations. The top model was the "Irmscher-R" JT191S type, equipped with a high-power turbocharged engine and full-time 4WD. The suspension packages that were installed on the second generation [[Isuzu Piazza]] were also shared on the Gemini sold in Japan, including the [[four-wheel steering]] setup.

North American sales of the sedan started from December 1990 under the name Isuzu Stylus. Initial orders were above target in Japan, but production lagged behind. Strong early sales began to slump within a year, however, and as the [[Japanese asset price bubble|post-bubble]] recession began to take hold in Japan, Isuzu was particularly affected. After a corporate restructuring, Isuzu decided to abandon passenger car production and focus on commercial truck and SUV production, as the [[Isuzu Trooper|Trooper]] and the [[Isuzu Rodeo|Rodeo]] found many buyers internationally, with [[badge engineered]] versions sold under a variety of brands and names across different markets.<ref>Organizational structure in the automobile industry revolution SFC Keio Keio University Shonan South Fujisawa Campus 1995 organizational behavior theory OB68 group REFERENCE FOUND ON JAPANESE WIKIPEDIA SITE #6 AND 7</ref>

The total production volume of vehicles was 406,625 units at the end of the third generation (from HQ Isuzu), with 17,754 units sold in the United States (from Ward's Automotive Yearbook).
{{Clear}}

==Fourth generation (1993)==
{{Infobox automobile
| name  = Fourth generation
| image = 1994 Isuzu Gemini in NZ, front left.jpg
| body_style = 4-door [[sedan (car)|sedan]]
| production = 1993–1997
| engine = {{ubl
  | 1.5 L ''[[Honda D engine#D15B|D15B]]'' [[VTEC#VTEC-E|VTEC-E]] [[Straight-four engine|I4]] (MJ3)
  | 1.6 L ''[[Honda D engine#ZC|ZC]]'' I4 (MJ1/2)
  }}
| layout     = [[FF layout]]
| related    = {{ubl|[[Honda Civic]]|[[Honda Domani]]|[[Honda Integra SJ]]|[[Rover 400]]}}
| wheelbase  = {{cvt|2620|mm|in|1}}
}}

[[File:4th Isuzu Gemini 2.JPG|thumb|left|Isuzu Gemini rear]]
In 1993, Isuzu halted production of the Gemini and replaced it with a rebadged version of the [[Honda Domani]]. Announced at the end of August it went on sale in early September 1993. Isuzu did not really advertise the new Gemini; it was mainly produced to be sold to existing customers of Isuzu's commercial vehicles. It was only available with the four-door sedan bodystyle and a limited number of engines; the Domani also came as a five-door hatchback.

The models at the time of introduction were the 1600 C/C, C/C 4WD, and the slightly more powerful and better equipped G/G model. Maximum power output is {{cvt|120|PS|kW|0}} at 6,300&nbsp;rpm for the C/C and {{cvt|120|PS|kW|0}} at 6,400&nbsp;rpm for the G/G. In May 1995 the E-VTEC equipped 1500 C/C model was added to the lineup; this fuel efficient, [[lean-burn]] model was aimed at capturing some of the old buyers of diesel-engined Geminis. Diesels had accounted for about half of Gemini sales for the previous generations. The 1500 C/C has a maximum power of {{cvt|94|PS|kW|0}} at 5,500&nbsp;rpm.<ref>{{cite web | url = https://autoc-one.jp/catalog/isuzu/gemini/fmc1398/ | archive-url = https://web.archive.org/web/20230318064621/https://autoc-one.jp/catalog/isuzu/gemini/fmc1398/ | archive-date = 2023-03-18 | title = いすゞ ジェミニ 1993年式モデルの価格・カタログ情報 | trans-title = Isuzu Gemini 1993 model price and catalog information | language = ja | work = MOTA Automobile Catalog | publisher = MOTA Corporation }}</ref> In October 1995, the Gemini underwent some very minor changes in equipment and the 1600 C/C engine was lightly modified. Most notably, the "Gemini" sticker on the front doors was changed to a plastic emblem. Production of the fourth-generation Gemini ended in January 1997 and it was replaced the following month.

{{clear}}

==Fifth generation (1997)==
{{Infobox automobile
| name       = Fifth generation
| image      = Isuzu Gemini 001.JPG
| aka        = {{ubl|[[Honda Domani]]|[[Acura EL]]}}
| production = 1997–2000
| body_style = 4-door [[sedan (car)|sedan]]
| layout     = [[FF layout]]
| related    = {{ubl | [[Honda Civic (sixth generation)#MA|Honda Civic]] | [[Rover 400]]}}
| wheelbase  = {{cvt|2620|mm|in|1}}
}}

[[File:Isuzu Gemini 002.JPG|thumb|left|Isuzu Gemini rear]]

The fifth generation Gemini was a rebadged second generation [[Honda Domani]] sedan, a car which was also marketed as a Civic in Europe. Production of this model ceased in 2000. As usual, the Gemini was available in a much more limited lineup than that of the related Honda version, with only one bodystyle (four-door sedan) and either a 1.5- or a 1.6-litre engine.
{{clear}}

==Safety==
In Australia, the 1982–1984 Holden Gemini was assessed in the Used Car Safety Ratings 2006 as providing "significantly worse than average" protection for its occupants in the event of a crash. The second generation Gemini (RB) rated better, at "worse than average".<ref>{{citation | url = http://www.vicroads.vic.gov.au/NR/rdonlyres/67432333-6B2E-451D-8C71-424C873DBABA/0/GDS01655UsedCarSafety_FA.pdf | archive-url = https://web.archive.org/web/20070127104519/http://www.vicroads.vic.gov.au/NR/rdonlyres/67432333-6B2E-451D-8C71-424C873DBABA/0/GDS01655UsedCarSafety_FA.pdf | archive-date= January 27, 2007 | title = Used Car Safety Ratings: 2006 Update | publisher = Lan Transport NZ, Australian Transport Safety Bureau | via = Vic Roads | page = 12 | date = June 2006 | issn = 1176-9890 }}</ref>

==Related information==
The first and second generation Isuzu Geminis, specifically the diesel ones, were the most popular [[taxicab]] models in the Philippines in the 1980s and early 1990s. Models were phased out and gradually replaced with newer models from Toyota and Nissan.

The [[Singapore Police Force]] used the Isuzu Gemini [[Fast Response Car]]s (FRCs) from 1991 until 1995 until they were phased out and replaced by the [[Subaru Impreza#Police use|Subaru Impreza]] police cars.

The front-wheel drive Geminis (second and third generation) were marketed in Japan with the catch phrase {{Nihongo|"Shortstop of the streets"|街の遊撃手|Machi no yūgekishu}}, and television commercials featuring exciting driving stunts throughout the streets of Paris. With French professional stunt driver Rèmy Julienne mostly coordinating with all of the stunts, the Geminis enjoyed wide popularity.

== References ==
{{reflist}}

==External links==
{{commons category}}
* [https://archive.today/20130209061010/http://americanchevette.webs.com/tbodyintroduction.htm Development of the Isuzu Gemini from GM]
* [http://www.isuzu.co.jp/museum/p_car/gemini.html Isuzu Official Gemini article (Japanese)] {{Webarchive|url=https://web.archive.org/web/20180408143202/http://www.isuzu.co.jp/museum/p_car/gemini.html |date=2018-04-08 }}
* [http://www.ozgemini.com/ OzGemini.com]
* [http://www.holdengemini.net/ HoldenGemini.net]
* {{usurped|1=[https://web.archive.org/web/20070308105132/http://canberrageminiclub.com/ CanberraGeminiClub.com]}}
* {{usurped|1=[https://web.archive.org/web/20100523060447/http://gemisa.net/ GemiSA Car Club (previously Just Gems of SA)]}}
* [https://web.archive.org/web/20060519194933/http://www.vicroads.vic.gov.au/vrne/vrne5nav.nsf/childdocs/-B8F8655488907260CA256FD300241C1A-667BCFE41674A389CA256FD300241C2B-1EE471300C4801C3CA2570A400083B3F?open Used Car Safety Ratings – Holden Gemini – Australia Only]
* [https://www.youtube.com/watch?v=ybEBjdMi334&NR ISUZU Gemini Ads]

{{Isuzu cars timeline 1950–1979}}
{{Isuzu modern timeline}}
{{Isuzu United States}}
{{Geo timeline}}
{{Buick postwar timeline}}
{{Chevrolet cars timeline 1980 to date}}
{{Chevrolet vehicles}}

[[Category:Isuzu vehicles|Gemini]]
[[Category:Front-wheel-drive vehicles]]
[[Category:Rear-wheel-drive vehicles]]
[[Category:Subcompact cars]]
[[Category:Compact cars]]
[[Category:Police vehicles]]
[[Category:Coupés]]
[[Category:Hatchbacks]]
[[Category:Sedans]]
[[Category:Cars introduced in 1974]]
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[[Category:1980s cars]]
[[Category:1990s cars]]
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[[Category:Touring cars]]
[[Category:Geo (automobile)|Spectrum]]
[[Category:Cars of the Philippines]]