Quick Facts — BMW X6

Est. On UK Roads
40,000+
Years Made
2008–present
Common Engines
xDrive30i, xDrive40i, M50i, xDrive30d, xDrive40d, M50d

6 Most Common BMW X6 Problems

These are the faults most frequently seen on the BMW X6 by UK garages — ranked by how commonly they occur and what they cost to fix.

1
Timing Chain (N57 Diesel)
High Priority
The N57 diesel used in X6 30d and 40d models shares the same timing chain wear risk as in the X5. A startup rattle is a serious warning sign.
💷 Typical repair cost: £2,000–£5,000+
2
Air Suspension Failure
High Priority
Like the X5, the X6 air suspension is prone to compressor, air bag and sensor failures. Uneven ride height is the visible symptom.
💷 Typical repair cost: £600–£2,500
3
Transfer Box Issues
Watch
The xDrive transfer box can develop bearing wear and oil leaks on higher-mileage examples. Drivetrain warning lights and whining under load are the symptoms.
💷 Typical repair cost: £500–£1,800
4
Rear Differential Wear
Watch
The rear differential can develop excessive wear on higher-mileage X6 models. A whining noise from the rear under acceleration is the typical sign.
💷 Typical repair cost: £400–£1,500
5
EGR and DPF (Diesel)
Watch
High-mileage diesel X6s develop EGR carbon buildup and DPF issues, shared with the X5.
💷 Typical repair cost: £200–£1,500
6
Cosmetic Roof and Glass Issues
Low Priority
The X6 coupe roofline creates water management challenges. Seal wear and glass panel leaks are seen on higher-mileage examples.
💷 Typical repair cost: £200–£800

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BMW X6 — MOT Tips

Same priority checks as X5 — air suspension operation and N57 timing chain on diesel models. DPF warning light is a fail. Check all chassis warning lights before booking.

Engine management light on before your MOT? It's an automatic fail. Run a Find Your Problem Now → to get the likely cause and repair cost before booking the test.

BMW X6 Tyres

Most BMW X6 models run 275/40 R20 or 315/35 R20 depending on trim level and year. Always check the placard inside the driver's door for the exact size for your vehicle.

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Frequently Asked Questions

What is the most common problem with the BMW X6?

The most frequently reported issue on the BMW X6 is Timing Chain (N57 Diesel). The N57 diesel used in X6 30d and 40d models shares the same timing chain wear risk as in the X5. A startup rattle is a serious warning sign.

How many BMW X6s are on UK roads?

There are an estimated 40,000+ BMW X6s currently on UK roads.

What tyres does the BMW X6 use?

Most BMW X6 models run 275/40 R20 or 315/35 R20 depending on trim level and year. Always check the placard inside the driver's door for the exact size for your vehicle.

Will a warning light fail my BMW X6's MOT?

Same priority checks as X5 — air suspension operation and N57 timing chain on diesel models. DPF warning light is a fail. Check all chassis warning lights before booking.

Similar Issues on Other Models

BMW X5 — shares the same air suspension failure problem Audi Q7 — air suspension failure shows up here too

Summary

The X6 shares all of the X5's mechanical strengths and weaknesses. Air suspension and N57 timing chain are the critical checks. A desirable and distinctive car but not for buyers who want low running costs.

If your BMW X6 has a warning light on or a symptom you can't identify, a Find Your Problem Now → gives you likely fault causes, UK repair cost estimates and MOT risk — instantly.

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Other BMW Models

BMW 1 Series → BMW 2 Series → BMW 3 Series → BMW 4 Series →