Common Bentley Mulsanne Problems, Faults, and Repair Costs
Every known Bentley Mulsanne MOT issue, ranked by how common it is and what it costs to fix. Based on 2,491 real MOT tests across 14 model years.
Segment: luxury | Fuel: Petrol
96%
Bentley Mulsanne pass rate
94%
Bentley average
82%
National average
The Bentley Mulsanne has an average MOT pass rate of 96%, which is 2 points above the Bentley average and 14 points above the national average. Newer BENTLEY MULSANNEs show better MOT pass rates than older ones, with an average improvement of 4 percentage points.
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Enter your reg plate to see the specific issues found on your car, plus a health score and running cost estimate.
Most Common Bentley Mulsanne MOT Issues
Ranked by how likely they are to affect your Bentley Mulsanne, with typical repair costs
Brakes
High likelihood£80 - £450
Typical repair cost
Common advisories:
Brake discs worn, brake pads thin, handbrake adjustment needed
Failure points:
Brake disc excessively worn, brake pipe corroded, brake efficiency below minimum
Suspension
High likelihood£150 - £600
Typical repair cost
Common advisories:
Suspension arm bush worn, shock absorber misting, spring corroded
Failure points:
Coil spring broken, ball joint excessive play, shock absorber leaking
Lights
High likelihood£15 - £200
Typical repair cost
Common advisories:
Headlamp aim slightly out, lens deteriorated
Failure points:
Headlamp not working, brake light not functioning, indicator failure
Tyres
High likelihood£50 - £300
Typical repair cost
Common advisories:
Tyre approaching legal limit, slight damage to sidewall
Failure points:
Tyre below minimum tread depth, tyre has a cut exposing ply
Exhaust & Emissions
High likelihood£80 - £800
Typical repair cost
Common advisories:
Exhaust mounting corroded, slight exhaust leak
Failure points:
Exhaust emissions exceed limits, catalytic converter efficiency low, DPF warning
Steering
High likelihood£100 - £500
Typical repair cost
Common advisories:
Track rod end has slight play, steering rack boot deteriorated
Failure points:
Steering rack leaking, track rod ball joint worn beyond limits
Body & Structure
High likelihood£200 - £1200
Typical repair cost
Common advisories:
Surface corrosion on subframe, slight body panel damage
Failure points:
Structural corrosion, body mounting corroded through, chassis weakness
Windscreen & Wipers
Lower likelihood£10 - £350
Typical repair cost
Common advisories:
Minor windscreen chip, wiper blade deteriorated
Failure points:
Windscreen crack in swept area, wiper does not clear windscreen
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Bentley Mulsanne Reliability by Year
MOT pass rate for each model year, based on real test data
| Year | Fuel | Engine | Pass Rate | Fail Rate |
|---|---|---|---|---|
| 2021 | Petrol | 6.8L | 96% | 4% |
| 2020 | Petrol | 6.8L | 99% | 1% |
| 2019 | Petrol | 6.8L | 98% | 2% |
| 2018 | Petrol | 6.8L | 100% | 0% |
| 2017 | Petrol | 6.8L | 99% | 1% |
| 2016 | Petrol | 6.8L | 98% | 1% |
| 2015 | Petrol | 6.8L | 95% | 5% |
| 2014 | Petrol | 6.8L | 99% | 1% |
| 2013 | Petrol | 6.8L | 98% | 2% |
| 2012 | Petrol | 6.8L | 96% | 4% |
| 2011 | Petrol | 6.8L | 93% | 5% |
| 2010 | Petrol | 6.8L | 100% | 0% |
| 1991 | Petrol | 6.8L | 86% | 14% |
| 1990 | Petrol | 6.8L | 88% | 12% |
Bentley Mulsanne Running Costs
Want to know the full annual running costs for the Bentley Mulsanne? Including fuel, tax, insurance, and predicted repairs based on MOT history.
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Bentley Mulsanne FAQ
What are the most common Bentley Mulsanne problems?
The most common Bentley Mulsanne MOT problems are brakes, suspension, lights, tyres, exhaust & emissions, steering, body & structure issues. These are the areas most likely to cause advisories or failures during an MOT test, based on 2,491 real tests.
Is the Bentley Mulsanne reliable?
The Bentley Mulsanne has an average MOT pass rate of 96%, which is 14 points above the national average of 82%. This is considered good reliability.
Which year Bentley Mulsanne is most reliable?
The 2018 Bentley Mulsanne is the most reliable year with a 100% MOT pass rate. Avoid the 1991 model year if reliability is your priority, as it has the lowest pass rate at 86%.
How much does it cost to fix common Bentley Mulsanne faults?
Repair costs vary by issue. Brake work on a Bentley Mulsanne typically costs £80-£450, suspension repairs cost £150-£600, and exhaust/emissions fixes cost £80-£800. Lighting and wiper fixes are usually under £200.
Check a Specific Bentley Mulsanne
Enter any reg plate to see the exact MOT history, defects found, health score, and running cost estimate for that specific car.
Other Bentley Models
Common problems pages for other Bentley models