Highlights include reinforced cylinder head and pistons, sodium filled exhaust valves and
lightweight crankshaft which help the excellent revving capability, whilst Twin - scroll turbo charging, direct petrol injection and fully variable valve control optimises engine responsiveness and efficiency.
A forged
crankshaft is also used for reduced rotating masses,
which in combination with
lightweight pistons, is claimed to bring about a significant improvement in throttle response compared to BMW's standard turbocharged 3.0 - liter inline six - cylinder gasoline engine.