True MPG: most efficient executive and luxury cars 2019
What Car?'s True MPG tests show what fuel economy you can really expect from a car. Here, we reveal the best and worst-performing executive and luxury cars we've tested...
7. BMW 3 Series 320d
True MPG 47.2mpg
It may be only seventh on this list, but the 320d is our reigning Executive Car of the Year, because it's fantastic to drive, it's very affordable as a company car and it has the most user-friendly infotainment system around.
True MPG 47.3mpg
While it's not as good an all-rounder as the very best executive saloons, the recently facelifted Mazda 6 has a strong but quiet diesel engine and comes very well equipped.