At a Glance
The Bentley Mulsanne has 8 identified common problems across 2 generations, with the Mulsanne (2010-2020) being the most affected generation and brakes the most common problem category. Based on 13K MOT tests from DVSA data.
Problems are patterns in the DVSA data that occur significantly more often on a specific model than the UK average — confirmed at 99% statistical confidence. Read our DVSA MOT data methodology →
Below: generation-by-generation comparison of Bentley Mulsanne common problems, MOT failure types, and pass-rate data drawn from DVSA records. Click any generation to see fuel- and engine-specific fault patterns, mileage-banded repair guidance, and the most common MOT failures testers record.
MOT Tests & Failures by Generation
Bentley Mulsanne generations by MOT tests, failures, and identified problems from DVSA data
Hover over each bar for a full breakdown. Tap any bar to view that generation's problems.
Showing total MOT tests, failures, and known problems per make. Hover over each bar for a full breakdown.
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Tell Us About Your Problem
Help other Bentley Mulsanne owners — report a problem and we'll add it to the database
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Browse Bentley Mulsanne Generations
Select a generation to see its specific problems, MOT failures and advisories
Most Common Bentley Mulsanne MOT Failures
Every reason Bentley Mulsanne vehicles fail their MOT, ranked by frequency. Select an individual year to see only that year’s failures, or stay on ‘All time’ for the combined picture across our 20 years of DVSA data. Scroll inside the table for the full list.
| # | Failure | % of failures |
|---|---|---|
| 1 | Tyre condition | 8.32% |
| 2 | Number plate lamp not working | 6.09% |
| 3 | Wiper blades deteriorated | 5.64% |
| 4 | Brake hydraulic component worn | 4.68% |
| 5 | Windscreen washer not working | 3.73% |
| 6 | Suspension joint or bush worn | 3.70% |
| 7 | Shock absorber worn or leaking | 3.68% |
| 8 | Coil spring broken or corroded | 3.48% |
| 9 | Indicator fault | 3.27% |
| 10 | Headlamp aim defect | 3.23% |
| 11 | Parking brake condition | 3.07% |
| 12 | Front lamp not working | 2.79% |
| 13 | Parking brake performance below minimum | 2.52% |
| 14 | Tyre tread depth below limit | 2.32% |
| 15 | Exhaust system fault | 2.23% |
| 16 | Stop lamp not working | 2.18% |
| 17 | Front suspension joint worn | 2.07% |
| 18 | Spark ignition emissions above threshold | 2.04% |
| 19 | Fog lamp not working | 1.64% |
| 20 | Brake pads or linings worn | 1.57% |
| 21 | Power steering pipe or hose leaking | 1.55% |
| 22 | Steering rack fault | 1.50% |
| 23 | Position lamp not working | 1.48% |
| 24 | Suspension mounting corroded | 1.48% |
| 25 | Rear lamp not working | 1.45% |
| 26 | Brake performance below minimum | 1.39% |
| 27 | Headlamp fault | 1.36% |
| 28 | Brake disc or drum worn | 1.18% |
| 29 | Seat belt condition | 1.07% |
| 30 | Driveshaft fault | 0.98% |
| 31 | Horn not working | 0.98% |
| 32 | Body corrosion or damage | 0.89% |
| 33 | Ball joint dust cover split | 0.73% |
| 34 | Track rod end worn | 0.70% |
| 35 | Rear suspension fault | 0.68% |
| 36 | Suspension arm worn or corroded | 0.66% |
| 37 | Subframe mounting corroded | 0.64% |
| 38 | Tyre pressure monitoring system fault | 0.57% |
| 39 | Dashboard warning lamp fault | 0.52% |
| 40 | ABS fault | 0.50% |
| 41 | Electrical switch fault | 0.50% |
| 42 | Rear fog lamp not working | 0.50% |
| 43 | Chassis condition | 0.48% |
| 44 | Fuel pipe corroded or damaged | 0.48% |
| 45 | Front suspension fault | 0.45% |
| 46 | Power steering ram fault | 0.45% |
| 47 | Mirror damaged or missing | 0.41% |
| 48 | Rigid brake pipe corroded or damaged | 0.34% |
| 49 | Windscreen damage affecting view | 0.34% |
| 50 | Airbag warning light on | 0.32% |
| 51 | Brake fluid warning light on | 0.32% |
| 52 | Brake fluid level low or contaminated | 0.30% |
| 53 | Brake lever fault | 0.30% |
| 54 | Catalytic converter efficiency low | 0.27% |
| 55 | Steering lock fault | 0.27% |
| 56 | Wheel bearing worn | 0.27% |
| 57 | Brake caliper fault | 0.25% |
| 58 | Engine oil leak | 0.25% |
| 59 | Hydraulic suspension accumulator fault | 0.25% |
| 60 | Brake pedal fault | 0.20% |
| 61 | Brake pedal movement restricted | 0.20% |
| 62 | Driver seat fault | 0.20% |
| 63 | Battery loose or leaking | 0.18% |
| 64 | Air suspension levelling valve fault | 0.16% |
| 65 | Fuel hose damaged or leaking | 0.16% |
| 66 | Steering coupling worn | 0.16% |
| 67 | Boot lid damaged or insecure | 0.14% |
| 68 | Brake cable, rod, lever or linkage fault | 0.14% |
| 69 | Fuel cap damaged or missing | 0.14% |
| 70 | Hydraulic fluid leak | 0.14% |
| 71 | Steering free play excessive | 0.14% |
| 72 | Dip switch fault | 0.11% |
| 73 | Drag link end worn | 0.11% |
| 74 | Exhaust emissions above threshold (non-catalyst) | 0.11% |
| 75 | Handbrake cable fault | 0.11% |
| 76 | Power steering pump fault | 0.11% |
| 77 | Steering operation fault | 0.11% |
| 78 | Suspension retaining or locking device fault | 0.11% |
| 79 | Suspension linkage fault | 0.11% |
| 80 | Electronic parking brake fault | 0.09% |
| 81 | Full power hydraulic brake fault | 0.09% |
| 82 | Steering arm worn | 0.09% |
| 83 | Brake valve fault | 0.07% |
| 84 | Compression ignition emissions above threshold | 0.07% |
| 85 | Flexible brake hose damaged | 0.07% |
| 86 | Hydraulic brake cylinder fault | 0.07% |
| 87 | Rear fog lamp warning light fault | 0.07% |
| 88 | Spare wheel fault | 0.07% |
| 89 | Steering shaft fault | 0.07% |
| 90 | Subframe corrosion or damage | 0.07% |
| 91 | Trailing arm worn or corroded | 0.07% |
| 92 | Vehicle structure corrosion | 0.07% |
| 93 | Bonnet catch or hinge fault | 0.05% |
| 94 | Brake fluid leak | 0.05% |
| 95 | Brake fluid reservoir fault | 0.05% |
| 96 | Handbrake lever fault | 0.05% |
| 97 | Hazard warning light fault | 0.05% |
| 98 | Indicator warning light fault | 0.05% |
| 99 | Main beam warning light fault | 0.05% |
| 100 | Radius arm worn or corroded | 0.05% |
| 101 | Steering drive system fault | 0.05% |
| 102 | Suspension air bellows damaged | 0.05% |
| 103 | Tie bar or rod worn or corroded | 0.05% |
| 104 | Transmission oil leak | 0.05% |
| 105 | Tyre size or type not matched | 0.05% |
| 106 | Air brake cylinder or actuator fault | 0.02% |
| 107 | Body security fault | 0.02% |
| 108 | Brake clevis joint worn | 0.02% |
| 109 | Brake relay lever fault | 0.02% |
| 110 | Electrical wiring fault | 0.02% |
| 111 | Exhaust leak | 0.02% |
| 112 | Load sensing valve fault | 0.02% |
| 113 | Propshaft fault | 0.02% |
| 114 | Rear reflector damaged or missing | 0.02% |
| 115 | Reversing lamp not working | 0.02% |
| 116 | Seat belt pre-tensioner fault | 0.02% |
| 117 | Steering box fault | 0.02% |
| 118 | Steering lock stop fault | 0.02% |
| 119 | Suspension unit fault | 0.02% |
Showing all 119 reasons — scroll inside the table for the full list.
Bentley Mulsanne MOT Failures by Category
Total MOT failure occurrences for the Bentley Mulsanne, grouped by category. Same data as the failures table above — just sliced by category instead of fault title. Hover a slice for the top failures in each category.
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Frequently Asked Questions
What are the most common Bentley Mulsanne problems?
Based on analysis of 13K Bentley Mulsanne MOT tests from DVSA data, we have 8 identified common problems across 2 generations. The most frequently flagged issue is "Brake performance below minimum". Brakes is the most common problem category.
Which Bentley Mulsanne generation has the most problems?
The Bentley Mulsanne Mulsanne (2010-2020) (2010–2020) has the highest number of identified common problems (11). Click the generation card above for the full breakdown.
How is this data calculated?
We analyse anonymised DVSA MOT test records under the Open Government Licence. An issue is classified as a "Common Problem" when it occurs significantly more often on a specific model than the UK average, confirmed at 99% statistical confidence. Read the full methodology page for details.
Can I report a problem with my Bentley Mulsanne?
Yes — use the "Tell Us About Your Problem" form on this page. Your report helps other Bentley Mulsanne owners spot problems early. All submissions are reviewed before being added to the public database.
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