First among them is the Volvo XC40, 2018's Car of the Year and a compact premium SUV that we like a great deal. Then there's the Audi Q3, a car that has been around for a while but one that is no less popular for that.
Diesel engines still make a great deal of sense in cars like this, which can be used for towing but just as often for covering big motorway distances and the (very occasional) light off-roading. So that's the engines we're testing.
Look on, then, to find who makes the best luxurious small 4x4 - is it Audi, Land Rover or Volvo?