What is s65 engine?

The S65 engine is a high-performance V8 engine produced by BMW. It first debuted in the E90 M3 in 2007 and was used in various M3 models until 2013.

The S65 engine is a 4.0-liter naturally aspirated V8 that produces 414 horsepower and 295 lb-ft of torque. It has a redline of 8,400 rpm, giving it a very high-revving character that is unique for a V8 engine.

The engine features a lightweight construction with a bedplate design, individual throttle bodies, and high-flow cylinder heads. It also has BMW's Double-VANOS variable valve timing system and high-pressure direct fuel injection.

The S65 engine is known for its exhilarating performance, crisp throttle response, and impressive sound. It is regarded as one of the greatest V8 engines ever produced by BMW and is highly sought after by enthusiasts.