Which used Mercedes E-Class estate should I buy?
The E280 (from '05 onwards) gets our vote. It's smooth, quiet, economical and has just the sort of strong mid-range response you need for serious load-lugging.
On that score, the E200K supercharged petrol and E220 CDI diesel lose out. Besides, there's no great penalty going for the E280 diesel, as it isn't that much heavier on fuel than the E220 diesel. For pre-'05 cars look for the 270CDI.