MOTOR RACING TECHNOLOGY.
The straight six-cylinder engine featuring M TwinPower Turbo
Technology, available in three performance levels, features
superior power delivery and the striking characteristic M engine
sound. Two mono-scroll turbochargers, direct High-Precision
Injection, fully variable valve control and variable camshaft
control ensure outstanding performance at any time. The M4
Competition Coupé with M xDrive accelerates from 0 to 100 km/h in
just 3.5 seconds and from 0 to 200 km/h in just 11.8 seconds – a
new benchmark.
design features
The engine's design features directly derive from motor racing and
include the extremely stiff crankcase, which is manufactured in a
sleeveless closed-deck design, the weight-reduced forged
crankshaft and the iron coating, which is applied to the cylinder
liners in an arc wire spraying process (AWSP). Manufactured in a
3-D printing process, the cylinder head core features an optimised
routing of the coolant ducts, something that cannot be realised
using conventional metal casting technology. In this way, both
weight and temperature management are optimised. Like the cooling
system, the oil supply is also aligned to the special demands of
racetrack use.