Which used Mercedes V-Class estate should I buy?
There's only really one answer to this question - avoid the petrols and go for the diesel.
The 2.3-litre 143bhp petrol engine from the old E-Class struggles and wheezes to shift the V-Class's considerable bulk and only gives 24mpg fuel economy. The 2.8-litre V6 with 174bhp offers a more powerful alternative, but returns an appalling 21mpg. So, pretty much by default, that only leaves the 2.2-litre diesel, badged 220 CDI, giving a half-decent 35mpg.