Which used Mercedes E-Class estate should I buy?
The E320 CDi turbodiesel is easily the pick of the bunch, thanks to its brawny 3.2-litre engine. At its best when coupled to a five-speed automatic, it will return 36.0mpg.
The E220 CDi diesel is also a sound choice if you don't mind trading some performance for greater economy. It'll return up to 46.0mpg.