Credov's researched list of the 8 faults the BMW X6 is known for (2007–2014), 8 of them serious or costly. Each one says what to look for when you check the car, so you can spot it before you buy. Not every car has these faults: they are the ones worth checking on this model.
What to look for: Feel the front footwell carpets and under the boot floor for damp, and smell for mustiness.
Why it matters: Water tracking into the boot and footwells corrodes modules and wiring; repairs can run from a couple of hundred dollars to clear the drains up to NZ$8,000 for damaged modules and looms.
What to look for: Lie beside the car and look at the front propshaft joints near the transfer case for rust or play.
Why it matters: A broken joint leaves the car without front drive and can damage the transfer case; typically NZ$900-$2,500.
What to look for: On slow full-lock turns feel for binding or shudder, and watch for 4x4, ABS and brake lights together.
Why it matters: A stripped actuator or worn clutch pack means binding or shudder on turns, and a new transfer case is expensive; typically NZ$600-$6,500.
What to look for: On the test drive watch the temperature reading and the dash for an engine-hot or coolant warning.
Why it matters: No-warning failure risks overheating and head damage if driven on; typically NZ$1,400-$2,400.
What to look for: Look at the oil filter housing at the front of the engine for oil running down onto the drive belt.
Why it matters: An oil-soaked belt can be pulled into the crank seal and turn a small gasket job into a bigger repair; typically NZ$500-$1,500.
What to look for: Check the coolant level cold, smell the vents on high for exhaust fumes, and watch for white smoke.
Why it matters: A leaking cooler drops coolant and can bring an engine light and limp mode; typically NZ$1,500-$4,000.
What to look for: On arrival check whether the rear sits low, then listen for the air compressor running long after start-up.
Why it matters: A leaking spring and a burnt-out compressor are a common pairing, and the springs are usually replaced as a pair; typically NZ$1,500-$4,500.
What to look for: Do slow full-lock turns and gentle acceleration from rest, feeling for hopping, shudder or jerks.
Why it matters: A shuddering transfer case is often just the wrong factory oil, but a worn clutch pack means a new transfer case; typically NZ$600-$6,000.
Got a question about a BMW X6? Ask Credov: a noise, a warning light, a part or how to fix it.
On top of the faults above, every Credov inspection covers the basics: fuel smell, leaks or filler rust, engine oil leaks, power steering fluid leak, drive belt cracks or squeal, rust underneath: chassis and mounts, engine mounts, engine oil level and colour, coolant level, colour and leaks, head gasket failure signs, cold start: rattle, knock or smoke, rough or hunting idle, engine running hot on gauge, gearbox or diff oil leak, swapped gearbox without lvv and more.
Researched by Credov from manufacturer recalls and service bulletins, owner reports and workshop sources. Repair prices are typical ranges, not quotes. See also fault codes and repair costs.