Brakes and tyres
The size and weight of the X3 can take its toll on brake pads and tyres, so check the life expectancy of both before you buy.
The air-con unit has been know to work erratically or fail, so make sure the ventilation system blows both hot and cold air.
The X3 can do minor off-road work, but ground clearance is limited so check for damage to the underside and suspension.
Missing service history
Maintenance work can be pricey, so some owners skimp. Make sure servicing was carried
out when due.