Engine Designations: Notes
ENGINE DESIGNATIONS
| Item | Meaning | Index/explanation |
|---|---|---|
| 1 | Engine developer | M, N = BMW Group P = BMW Motorsport S = BMW M mbH 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 | Performance class | K = Smallest U = Lower M = Middle O = Upper (standard) T = Top S = Super |
| 8 | Revision relevant to approval | 0 = New development 1 - 9 = Revision |