6,100 rpm. The S85 was exclusively used in the E60 M5 (and related E63/E64 M6) and is not based on any other engine. There are three driver-selectable engine modes: P400, P500 and P500 S. P400, the default start-up mode, limits the engine to . P500 increases power to the full . The P500 S mode keeps the engine at the same power output as the P500 mode but adds a more sensitive throttle response. This engine is well known for its rod bearing failures, the stock bearings not providing sufficient clearance (the S65 from the E9X series M3, being based on the S85, shares the issue), which can lead to catastrophic engine failure if it is not addressed. Another major issue with this engine is the throttle actuators, which is usually attributed to the gears located inside the actuators, however, electronic failure of the actuators themselves is not uncommon. Transmission The M5 uses the SMG-III 7-speed single-clutch automated manual transmission, that performs gear shifts in 65–250 milliseconds, depending on the gear shifting mode. The SMG-III includes launch control, a hill holder, shift-lock avoidance (by briefly disengaging the clutch during downshifts) and an automatic shift mode. However, many reviews have observed the automatic mode of the transmission at low or frequent stop start speeds as being less smooth than that of a conventional automatic transmission. In North America, a conventional six-speed manual transmission was announced in October 2006. The SMG-III remained the default transmission in North America, while the manual was available as a no cost option. The six-speed manual M5 was marginally slower in certain tests, as the dynamic stability control could not be disengaged unlike the SMG version (however this was later made possible and a retrofit was released for earlier cars). In North America, the launch control for SMG transmissions is set at 1,500 rpm, instead of the 4,000 rpm used in other regions. F10 M5 (2011–2016) The F10 M5 was unveiled at the 2011 Frankfurt Motor Show and sales began in November 2011. It is powered by a twin-turbocharged V8 engine, making it the first turbocharged M5 model. The gearbox in most markets is a 7-speed Getrag (now Magna) 7DCI600 dual-clutch transmission marking the first time an M5 has used a dual-clutch automatic transmission. A traditional 6-speed manual transmission was also available in the United States. The BMW S63B44TÜ engine is an upgraded version of the twin-turbocharged