What should I look for in a used BMW 5 Series saloon?
The thing that's most likely to go wrong is the cooling system. It's responsible for no less than a quarter of all visits to the workshop, so pay close attention to the engine temperature when you're test driving and get the work done if it's dodgy.
Give the air-con a run for its money, too, to see that it can still blow hot and cold on demand.
Electrical faults dog most modern-day cars, and this BMW 5 Series is no different, so check that all the lights, locks, stereo controls, windows and mirrors operate as they should.
Otherwise, the BMW is reasonably robust, performing fairly well in our reliability surveys.