| GM Epsilon platform | |
|---|---|
 | |
| Overview | |
| Manufacturer | General Motors |
| Production | 2002–present |
| Body and chassis | |
| Class | Compact executive car(D) Mid-size(D) Large car(E) |
| Layout | Transverse[1]front engine,front-wheel drive/all-wheel drive |
| Body styles | 2-doorConvertible 4-doorSedan/Saloon 5-doorHatchback/Liftback 5-doorStation wagon/Estate/Caravan 5-doorMulti-purpose vehicle |
| Vehicles | Buick Lacrosse/Alpheon Cadillac BLS Cadillac XTS Chevrolet Classic Chevrolet Impala Chevrolet/Holden Malibu Chevrolet Malibu Maxx Fiat Croma Opel Insignia/Buick Regal Opel Signum Opel Vectra Pontiac G6 Roewe 950 Saab 9-3 Saab 9-5 Saturn Aura |
| Related | GM Alpha platform[citation needed] |
| Powertrain | |
| Engines | |
| Chronology | |
| Predecessor | GM N platform GM2900 platform GM W platform GM G platform GM Zeta platform |
| Successor | GM VSS-F |
Epsilon isGeneral Motors'mid-sizefront-wheel driveautomobile platform. The architecture was a multi-division project of GM North America, Opel and Saab,[2] and debuted in the 2002Opel Vectra and 2003Saab 9-3. Since this platform falls squarely in the center of the worldwide automobile market, GM plans to produce a great many Epsilon vehicles with over a dozen variations. As of 2005[update], it was GM's highest volume worldwide platform. Even after the dissolution of the GM/Fiat partnership, both companies retain the rights to continue developing Epsilon-derived models.
A total of 16 different models have made use of the GM Epsilon platform, some of which remain in production 19 years after the platform debuted.
GM'sEpsilon platform replaced theN platform in theUS, and replaced theGM2900 platform elsewhere. Vehicles of this platform generally carry the symbol "Z" in the fourth digit of theirVINs.
When the platform debuted, there was talk of an "Epsilon Wide" derivative, which was supposed to have provided the underpinnings for theBuick LaCrosse andSaab 9-5. However, the program was cancelled and the LaCrosse was put on theW platform, and the 9-5 was given a quick refresh for the 2006 model year.[citation needed]
The Epsilon platform is a midsize front-driver promising a 200 percent improvement in rigidity, with aluminum suspension components—MacPherson struts in front and a four-link independent arrangement in the rear, and four-wheel disc brakes. Many of the Epsilon vehicles use theEcotecInline-four engines and both theHigh Value andHigh Feature V6 engines.
The refreshed 2008 SAAB 9-3 debuted with an advanced version of all-wheel-drive it dubbed XWD, finally giving a definitive answer to rumors about the platform's ability to support AWD, which had been around since the debut of the platform.
TheLambda andTheta Premiumcrossover platforms are derived from Epsilon.[citation needed]
Vehicles based on the Epsilon I platform:
Cancelled vehicles which would have used this platform:
A new version of the Epsilon, dubbedEpsilon II, debuted in 2008. It is adaptable forfront andall-wheel drive applications. In long wheelbase format, Epsilon II supportsUS EPALarge Cars, allowing GM to replace theG andW platforms. The architecture was developed byOpel in Rüsselsheim, Germany. Many safety features and AWD fitment modifications were done by Saab.[3]
Current and announced vehicles built on Epsilon II:
Concept vehicles built on Epsilon II:
E2XX is a moderately updated version of Epsilon 2 platform,[5] consistent with other platform revamps, such as the D2XX based on Delta II.
The E2XX platform targets weight reductions and longer wheelbases.
Vehicle built on E2XX:
P2XX is the longer variant of the E2XX platform.
Vehicle built on P2XX:
C1XX is the crossover variant of the E2XX platform, replacing theTheta Premium andLambda platforms.
Vehicles built on C1XX:
Two-row mid-size:
Three-row mid-size:
Full-size:
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Retired | |
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