Before you buy a used BMW 3-Series you should be aware of the common faults or wear items specific to the BMW 3-Series that you should check for. Our research amongst the experts that work on the BMW 3-Series everyday has identified the essential engine checks, interior items that you need to ensure work, wear items to spot on the BMW 3-Series suspension, areas on the bodywork to inspect, and information about official recalls of the BMW 3-Series.