Bmw V10 Engine
By the Editorial Staff
March 16, 2026
The BMW S85 is a naturally aspirated V10 petrol engine that powered the M5 and M6 models from 2005 to 2010. It has a displacement of 4.9 L, a compression ratio of 12.0:1, and won several International Engine of the Year awards. Learn about the S85 V10 engine, the only naturally aspirated V10 engine in BMW history.
Discover the two models that feature it: the E60/E61 M5 and the E63/E64 M6, and find out which one is best. Explore common BMW V10 engine problems, their symptoms, and potential consequences for performance and reliability. Hidden engine problems and reliability issues most buyers discover too late.
Only two BMW models were equipped with the automaker's legendary S85 V10 engine - the E60/E61 M5 and E63/E64 M6. Learn about this award. The Glorious BMW V10 That's Built to Sing The BMW S85B50 5.0-liter V10, found in the E60 M5 and E63 M6, remains one of the boldest engines ever fitted to a production sedan.
The BMW S85 engine, a 5.0-liter V10 powerhouse, is known for its exhilarating performance and motorsport-inspired design. Explore its pros and cons, reliability concerns, tuning potential, and. BMW's S85 V10 reveals its vulnerable side after 122K miles: seized plugs, varnished oil passages, and bearing damage under the hood.
5.0-Liter Engines: BMW produced 5.0-liter V8 and V10 engines under the S62 and S85 engine classes which contained the S85B50 and S62B50 motors. The S85 engine class was manufactured under a 90-degree V10 engine configuration with an aluminum block and aluminum dual overhead cam (DOHC) cylinder heads. A look at every nut, bolt, and consumable rod bearing that goes into making BMW's M V10 sing.
Partee Racing specialized in S85 engine rebuilds. We take BMW's legendary V10 and completely rebuild it to better than stock specifications.