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Mitsubishi 6G75 MIVEC specs: 3.8L (232 ci) 6-cylinder, 95 x 90 mm (3.7402 x 3.5433 in) bore and stroke, 10.5:1 compression. Rated 258 hp, 2007–2009.
The Mitsubishi 6G75 MIVEC is oversquare — the 3.7402" bore exceeds the 3.5433" stroke by 5.6% — a layout that favors airflow and RPM over leverage at the crank. The 3.5433" stroke puts mean piston speed at 4,000 ft/min around 6,750 RPM, which is where a production bottom end is generally considered at its limit. Each of the 6 cylinders displaces 38.7 ci (634 cc).
10.5:1 is in the range that usually runs on pump premium.
It is one of 3 engines in the Mitsubishi 232ci family, all of them 232 ci — the differences between them are in compression, heads and rating, not displacement. 3 factory variants share these dimensions, rated at 258 hp across 2007–2009.
| Displacement | 232 ci / 3.8 L |
|---|---|
| Bore | 3.7402" |
| Stroke | 3.5433" |
| Cylinders | 6 |
| Configuration | V6 |
| Compression ratio | 10.5:1 * |
| Bore/stroke ratio | 1.056 |
* Compression ratio from a single source; not yet cross-verified.
| Fuel type | gas |
|---|---|
| Firing order | 1-2-3-4-5-6 |
| Advertised HP | 258 hp |
| Years | 2007–2009 |
| Bore/stroke character | 1.056 — oversquare — bore exceeds stroke, which favours higher RPM and larger valves |
|---|---|
| Mean piston speed at 6,000 RPM | 3,543 ft/min — in the range typical of performance street engines |
| Displacement per cylinder | 38.7 ci |
| Static compression | 10.5:1 — in the range that usually runs on pump premium |
Each link opens the calculator with this engine's specs already filled in.
These records share identical bore, stroke, displacement and compression. They differ by model year and factory power rating.
| Year | Advertised HP | Code |
|---|---|---|
| 2007 | 258 hp | 6G75 MIVEC |
| 2008 | 258 hp | 6G75 MIVEC |
| 2009 | — | 6G75 MIVEC |
1 factory vehicle, 2007–2009. Each year opens that model's engine table.