3.5
Jethro Bovingdon,
08 November 2009 00:01
BMW doesn't do things by halves. This is their first full hybrid model, the ActiveHybrid X6, and it's the most powerful hybrid in the world. It combines a 407bhp 4.4-litre twin-turbocharged V8 engine with a fiendishly complicated gearbox that contains two electric motors, one optimised for low-speed running, one to boost power at higher speeds. The X6 ActiveHybrid's electric motors ...
