Engine options are both diesel, either a 161bhp 2.2-litre four cylinder unit capable of 55.4mpg or a 197bhp three-litre V6 good for 31.6mpg. The smaller engine is not the smoothest while under load, but is very refined at cruising speeds, and the V6 is a gem, flexible, torquey and creamy. In both cases, power comes through an eight-speed auto gearbox so smooth you rarely notice it working.