BMW S85

The BMW S85B50 is a naturally aspirated V10 petrol engine which replaced the BMW S62 V8 engine in the M5 model and was produced from 2005–2010. It was both BMW's first and only production V10 engine, and the first petrol V10 engine to be available in a production sedan (saloon).

BMW S85 engine
S85B50 in an E63 M6
Overview
Manufacturer BMW
Production20052010
Layout
Configuration90° V10
Displacement5.0 L (4,999 cc)
Cylinder bore92 mm (3.62 in)
Piston stroke75.2 mm (2.96 in)
Cylinder block materialAluminium
Cylinder head materialAluminium
ValvetrainDOHC w/ VVT
Combustion
Fuel typePetrol
Output
Power output378 kW (507 hp)
Torque output520 N⋅m (384 lb⋅ft)
Chronology
PredecessorNone
SuccessorBMW S63

Introduced in the E60 M5, the S85 was inspired by BMW's previous Formula One involvement. Unlike most other BMW M engines, the S85 is not related to a regular production BMW engine.

The BMW S65 V8 engine (used in the E92 M3) is based on the S85.

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