BMW reckons its high-performance X5 M50d can run a return trip between Singapore and Kuala Lumpur on a single tank of fuel. Julian Kho takes up the challenge.
The xDrive is a marketing name for BMW's intelligent all-wheel drive system. But it could mean a whole load more, as we find out.
This time round, it isn't so much of getting up close and personal, but instead, it's having a better understanding of the two new M50d cars.
