BMW M5

The F10 M5 was released to the public at the 2011 Frankfurt Motor Show, and went on sale in November 2011. Compared to the preceding E60 M5 (and the E60 5 Series as a whole), "The new [F10] M5 is all about the right balance. It still favors its racing edge but can now be a very sophisticated executive car."

The new M5 uses a variation of the S63 biturbo 4.4-litre V8 engine (which is in turn derived from the base N63 engine found in regular BMW vehicles such as the BMW 750i and 550i) called the S63B44Tü (Tü stands for "technische überarbeitung" or technical revision). Compared to the standard S63 as found in the 2010 X5 M and X6 M, the S63B44Tü has less turbo boost and a higher compression ratio for quicker responsiveness, and it also adds Valvetronic to the intake valvues which is a first for a BMW M vehicle. The S63B44Tü produces 560 hp (418 kW) and 502 lb·ft (681 N·m) of torque. The decision to turbocharge the M5 has not met with approval from all fans, some being disappointed that BMW seems to be moving away from traditionally low-displacement, high-revving naturally aspirated engines. Increasingly stringent international CO2 emissions and fuel consumption regulations are cited as the reason for discarding the outgoing model's V10 engine; the new engine reduces CO2 emissions by 25%. One other advantage of turbocharging is that it generates more low-end torque.