Is the BMW 3 Series Touring reliable?
Overall, the BMW 3 Series Touring is relaible, as long as it is well maintained with regular servicing and repairs.
In What Car?'s Reliabilty Survey, the diesel 3 Series ranked fourth out of 24 cars in the executive car class with an excellent score of 96.5%. The petrol versions were equally good, achieving a marginally lower score of 92%.
The 3 Series Touring isn't totally free of problems (see below) but parts are easy to source and there are plenty of dealers and independent specialists to call upon should you ever need to use them.
Engine: The timing chain on early ‘M47’ four-cylinder diesels can stretch and snap. If you hear a rattle or ticking on start-up, walk away.
Check the rocker covers for oil leaks as the gasket can wear. It’s £50-£80 for a new one. The diesel particulate filter (DPF) can get clogged up without regular higher-speed driving, so make sure the car doesn’t go into limp mode.
Specialists can force a regeneration to clear it, but if that doesn’t work it will need to be replaced for around £500. Check the flexi pipe from the DPF to the exhaust too, as it can crack.
Gearbox: A driveline fault warning on the dash doesn’t necessarily mean the gearbox is faulty; it can appear when the coolant temperature sensor has failed.
A vibration through the clutch pedal, rattling sound or juddering when accelerating could mean the dual-mass flywheel will soon need to be replaced.