 For model years 2010–2012, some engines (the 3.0 l diesel and 5.0 l supercharged petrol) used the second generation six-speed ZF 6HP28 transmission.During 2012–2013, 8-speed ZF 8HP70 transmissions replaced the 6-speed transmissions for all engines.The gears can either be selected using a rotary dial that rises from the centre console on start-up or can be manually controlled using paddles behind the steering wheel.