Which used BMW 5 Series saloon should I buy?
SE and Sport versions of the BMW 5 Series offer plenty of toys, and do without the larger wheels that make the M Sport versions ride harshly, so they’re the ones we’d go for. A 520d offers a great blend of performance and fuel efficiency, although if you don’t do that many miles every year, you might find it’s cheaper in the long run to buy a petrol-powered 520i.
As mentioned in our advice for buyers, there are question marks over the reliability of the earlier diesel engine, so if you are going for a 518d or 520d and can afford to buy one with the later twin-turbo engine, introduced in late 2014, it’s worth doing so. You can tell the difference because the later engine has ‘TwinPower Turbo’ written on its top.