The GM M platform was the designation used by General Motors for the platform that underpinned the first, second and third generation Suzuki Cultus and its offspring.
| GM M platform | |
|---|---|
 Geo Metro | |
| Overview | |
| Manufacturer | General Motors/Suzuki |
| Also called | M-body |
| Production | 1985–2001 |
| Body and chassis | |
| Class |
|
| Layout | Transverse front-engine, front-wheel drive |
| Body style(s) |
|
| Powertrain | |
| Engine(s) | 1.0L G10 (I3) 1.0L G10T (I3 Turbo) 1.3L G13BA (I4 8v SOHC) 1.3L G13BB (I4 16v SOHC) 1.3L G13B (I4 16v DOHC) |
| Chronology | |
| Predecessor | None |
| Successor | |
The first generation of this platform had been designed by Suzuki for their 1983 Cultus, and adopted by Chevrolet with the introduction of the Sprint.
The platforms of the second and third generations first appeared in 1989 and 1995 respectively. They were designed at GM's Technical Center in Warren, Michigan, USA. Suzuki designed all the engines, drivetrains and actual body. From 1985 through 1989, all models were imported from Suzuki's facilities in Hamamatsu, Japan. From 1990 on, some North American M-cars were produced at CAMI Automotive in Ingersoll, Ontario, Canada with the exception of the convertible and turbocharged models which were imported from Japan. The third generation M platform was only sold by Suzuki as the Suzuki Swift in North America as Suzuki decided to create their own Swift to market around the world.
The following vehicles used this platform:
Suzuki Cultus Generations I and II, GM M platform:
| Nameplate | Market | Body | ||
|---|---|---|---|---|
| 1985–1988 | Suzuki Forsa | N. America | 3/4 | |
| 1985–1988 | Chevrolet Sprint | N. America (Colombian production continued until 2004) | 3/4 | |
| 1989–1994 | Suzuki Swift | N. America | 3/4 | |
| 1985–2004 | Suzuki Swift | Europe | 5 | a. |
| 1991–2004 | Chevrolet Swift | Colombia | 3/4 | b. |
| 1989–1994 | Pontiac Firefly | Canada | all | |
| 1989–1994 | Geo Metro | N. America | 2/3/5 | c. |
| 1988–1994 | Holden Barina | Australia | 3/5 | d. |
| 1990–1994 | Maruti Suzuki 1000 | India | 4 | |
| 1995–2007 | Maruti Suzuki Esteem | India | 4 | |
| Suzuki Jazz | Chile | un | ||
| 1995–2003 | Subaru Justy | Europe | 3/5 | e. |
| 2000–2016 | Suzuki Cultus | Pakistan | 5 | f. |
| 1999–2015 | Chang'an Suzuki Lingyang | China | 4 |
2= 2-dr convertible
3= 3-dr hatchback
4= 4-dr sedan
5= 5-dr hatchback
un = unknown
a. Manufactured at Magyar Suzuki
b. Imported to Colombia
c. Geo branded models in US after 1989, in Canada after 1992
d. MF, MH: only generations of 'Cultus-derived' Barina
e. Justy JMA/MS, manufactured at Magyar Suzuki
f. Manufactured at Paksuzuki
Suzuki Cultus Generation III, GM M platform:
| Nameplate | Market | Body | |
|---|---|---|---|
| Generation III | |||
| 1995–2001 | Suzuki Swift | N. America | 3 |
| 1995–2001 | Pontiac Firefly | Canada | 3/4 |
| 1995–1997 | Geo Metro | N. America | 3/4 |
| 1998–2001 | Chevrolet Metro | USA | 3/4 |
3 = 3-dr hatchback
4 = 4-dr sedan
5 = 5-dr hatchback
GM also used a different M platform for its rear-wheel drive minivans, the Chevrolet Astro and the GMC Safari.