Engine Identification
The engines have an identification mark on the crankcase to ensure unambiguous identification and classification. This engine identification is also necessary for approval by government authorities. Decisive here are the first seven positions. The first 6 positions are the same as the engine designation.
ENGINE IDENTIFICATION
| Item | Meaning | Index/explanation |
|---|---|---|
| 1 | Engine developer | M, N = BMW Group P = BMW Motorsport S = BMW M GmbH W = non-BMW engines |
| 2 | Engine type | 1 = R4 (e.g. N12) 4 = R4 (e.g. N43) 5 = R6 (e.g. N55) 6 = V8 (e.g. N63) 7 = V12 (e.g. N73) 8 = V10 (e.g. S85) |
| 3 | Change to the basic engine concept | 0 = basic engine 1 - 9 = changes, e.g. combustion process |
| 4 | Working method or fuel type and possibly installation position | B = petrol, longitudinal installation D = diesel, longitudinal installation H = hydrogen |
| 5 | Displacement in liters | 1 = 1 liter (whole number of liters) |
| 6 | Displacement in 1/10 liter | 8 = 0.8 liter (tenth of liter) |
| 7 | Type test concerns (changes that require a new type test) |
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