Mercedes-Benz 213ci specs: 92.9 x 86 mm (3.6575 x 3.3858 in) bore and stroke, shared by all 4 versions. Displacement, compression and factory ratings.
| Displacement | 213 ci |
|---|---|
| Cylinders | 6 |
| Bore | 3.658" |
| Stroke | 3.386" |
| Compression | 10.7–12.2:1 |
| Advertised power | 254–329 hp |
| Years | 2006–2016 |
| Engine | Displacement | Bore × Stroke | CR | HP |
|---|---|---|---|---|
| M272 | 213 ci | 3.6575" × 3.3858" | 10.7:1 | 254–268 |
| M276 | 213 ci | 3.6575" × 3.3858" | 12.2:1 | 302 |
| M276 + electric motor | 213 ci | 3.6575" × 3.3858" | 12:1 | 329 |
| M272 + e-motor | 213 ci | 3.6575" × 3.3858" | — | — |
Compression spans 10.7:1 to 12.2:1, so fuel requirements differ meaningfully between members — worth checking before assuming parts interchange.
All are oversquare — bore larger than stroke, which favours revs over low-end torque.
Each engine page carries rod ratio, mean piston speed, bore/stroke character and cylinder head specs where published, and links into the calculators with its dimensions already filled in.