Not many SUVs have a toilet in the back, but our BMW X3 did during a two week test over the Christmas break.

Picking up a new loo for our home was just the start of 800-odd kilometres with the xDrive20d M-Sport which ferried presents and people all over town before Santa arrived, and then into the new year, all in scorching heat.

So, how does it compare to rivals such as the Mercedes-Benz GLCAudi Q5 or Volvo XC60? Is it at all practical? What’s the point of diesel? And how did I burn my finger while sitting in the driver’s seat?