BMW 330xi Repair and Maintenance
A guide to problems, costs, maintenance and repair for your BMW 330xi
Verified by mechanics, reported by drivers like you
Ask a mechanic in our community
Our experts translate recalls into plain English
BMW 330xi ProblemsBurning Smell or Oil Drips on the Ground Due to Engine Oil Leak
Valve cover gasket leaks are common after 60,000 miles. Symptoms will include oil drips under the vehicle and burning oil smell from the engine compartment.
After 60,000 miles, the front outer half-shaft boots tend to tear and leak grease. In most cases, only the boot will have to be replaced; however, if it is not repaired soon enough, the half-shaft may need to be replaced. The front outer boots are put under heavy stress because of their involvement with the suspension when making turns.
An engine coolant leak may develop from the expansion tank resulting in engine overheating. When a cooling system component fails the entire cooling system should be inspected. It is not uncommon to find additional component have failed or are leaking.
Overheating can cause severe engine damage. If the engine begins to overheat it is recommended to stop at the first available location and have your vehicle towed to a repair shop.
BMW 330xi QuestionsHow much to install a new alternator? (1 answer)
alternator is bad, the battery is good, it's reading 12.3 volts, the alternator reading 11.1 volts.
In the morning white smoke come out when I turn it on, and when I'm driving it would smoke
BMW 330xi RecallsDriver's Frontal Air Bag Inflator Ruptures And Sprays Metal Fragments
The driver's frontal air bag inflator may deploy the air bag with excessive pressure, resulting in the inflator rupturing and causing metal debris to be sprayed onto vehicle occupants. Dealers will replace the driver's frontal air bag free of charge to resolve the concern.
In a crash that deploys the driver's front air bag, the inflator of the air bag can rupture, causing metal debris to strike vehicle occupants. Dealers will replace the front driver's air bag module free of charge to correct the concern.
Upon deployment the passenger airbag inflator could rupture, increasing the risk of personal injury. BMW dealers will replace the affected airbag inflator modules to correct this concern.