156n
M roadster, M coupe
Displacement
Number of cylinderscu in (cmm) 198.1 (3,246)
6
Maximum power output
at engine speedhp
rpm315
7,400
Maximum torqueat engine speedlb-ft (Nm)
rpm251 (340)
4,900
Compression ratioe 11.5
Stroke
Borein (mm)
in (mm)3.58 (91.0)
3.43 (87.0)
Fuel-injection system Digital-electronic engine management systemEngine specifications
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