What should I look for in a used BMW 3 Series sports?
Check the hood keeps out the rain, that it raises and fastens correctly, and that the heated rear window operates. If the top is powered, check it runs smoothly in both directions. Inspect its fabric for rips and then do the same for the cabin, as minor repairs will prove expensive.
Check the front mats for damp because the seal at the base of the windscreen can leak. And, watch for rust eating into the rear wheelaches and the bottoms of the doors.
A full service history is a must and, if it's supported by a wad of invoices, so much the better. Manual gearboxes last well and need little attention, but automatic gearboxes need an overhaul at about eight years old, so ask if one has been done, if necessary.
If the car doesn't steer or grip well, new suspension bushes (fairly cheap to buy and fit) should transform its handling. It may also need new shocks, though.