Bentley Arnage R Auto MOT Pass Rate
Overall pass rate across all manufacture years, based on 34 real MOT test results. Failure rate: 5.9%.
Data from official DVSA MOT testing records
Bentley Arnage R Auto MOT Reliability Overview
The Bentley Arnage R Auto is a rare vehicle in the UK, with 34 MOT test results recorded in our database spanning 1 manufacture years. It has an overall MOT pass rate of 94.1% and a failure rate of 5.9%, which is well above the UK average of approximately 37%.
Based on this data, the Bentley Arnage R Auto earns a "Excellent" reliability rating. The average Bentley Arnage R Auto presents for MOT with approximately 36,013 miles on the clock. The 2004 manufacture year performs best with a 93.3% pass rate.
The most common MOT failure for the Bentley Arnage R Auto is Seat Belts and Supplementary Restraint Systems, affecting 2.9% of all tests. Seat belt failures include frayed or cut webbing, faulty retractors, buckles that don't latch properly, and missing or damaged anchorages. All fitted seat belts must be functional. The second most common issue is Exhaust, Fuel and Emissions at 2.9%. Together, these top 2 failure categories account for a significant portion of all MOT failures for this model.
Top failures across all manufacture years combined. Individual year pages may show different top failures.
What Fails Most
Pass Rate by Manufacture Year
* High Fail Rate badge indicates an MOT pass rate below 65% (failure rate above 35%).
What Fails on This Car?
Click a category to see specific failure items.
View as table
| Rank | Failure Category | Rate (%) | Count |
|---|---|---|---|
| 1 | Seat Belts And Supplementary Restraint Systems | 2.9% | 1 |
| 2 | Exhaust, Fuel And Emissions | 2.9% | 1 |
Failures per 10,000 Miles
avg. 36,013 miFor every 10,000 miles driven, this shows what percentage of MOT tests fail for each category. This accounts for how far cars are actually driven, not just raw pass/fail counts.
View as table
| Category | Rate / 10K mi | Raw % | Count |
|---|---|---|---|
| Seat Belts | 0.82 | 2.9% | 1 |
| Emissions & Exhaust | 0.82 | 2.9% | 1 |
🚗 Similar Cars to Consider
Mileage at MOT
The average Bentley Arnage R Auto has 36,013 miles when tested for MOT.
📊 Mileage-Adjusted Failure Rate
How often this car fails MOT relative to how much it's driven — a fairer comparison than raw pass rate.
The Bentley Arnage R Auto has a mileage-adjusted failure rate of 1.64% per 10,000 miles driven. The average across all makes is 5.38%, so this model is better than average.
About Bentley Arnage R Auto MOT Data
The Bentley Arnage R Auto is a rare vehicle in the UK, with 34 MOT test results recorded in our database spanning 1 manufacture years. It has an overall MOT pass rate of 94.1% and a failure rate of 5.9%, which is well above the UK average of approximately 37%.
For Bentley Arnage R Auto owners, these results suggest a reliable vehicle that generally passes its MOT without major issues. Focus your pre-MOT checks on seat belts and supplementary restraint systems and exhaust, fuel and emissions for the best chance of a first-time pass. Use our detailed year-by-year breakdown and failure analysis below to understand how your specific Arnage R Auto is likely to perform.
Seat Belts and Supplementary Restraint Systems — 2.9% of failures
Seat Belts and Supplementary Restraint Systems issues account for 2.9% of MOT failures on the Bentley Arnage R Auto. Seat belt failures include frayed or cut webbing, faulty retractors, buckles that don't latch properly, and missing or damaged anchorages. All fitted seat belts must be functional. Typical repair costs: £50–200 per belt. Pre-MOT check: Pull each seat belt fully out and check for fraying, cuts, or fading. Ensure each belt retracts smoothly and the buckle clicks securely. Check the pre-tensioner warning light on the dashboard.
Exhaust, Fuel and Emissions — 2.9% of failures
Exhaust, Fuel and Emissions issues account for 2.9% of MOT failures on the Bentley Arnage R Auto. Emissions failures occur when exhaust gases exceed legal limits for carbon monoxide (CO), hydrocarbons (HC), or particulate matter (diesel). Common causes include faulty oxygen sensors, clogged catalytic converters, or DPF issues on diesel vehicles. Typical repair costs: £100–1,000+. Pre-MOT check: If the engine management light is on, get it diagnosed before the MOT. For diesel cars, ensure the DPF has completed a regeneration cycle. Regular servicing and using premium fuel before the test can help.
Frequently Asked Questions
What is the MOT pass rate for the Bentley Arnage R Auto?
Based on 34 (based on limited data) MOT tests in our database, the Bentley Arnage R Auto has an overall pass rate of 94.1% (5.9% fail rate).
What are the most common MOT failures on a Bentley Arnage R Auto?
The top 2 reasons a Bentley Arnage R Auto fails its MOT are: 1. Seat Belts and Supplementary Restraint Systems (2.9%), 2. Exhaust, Fuel and Emissions (2.9%). Check these areas before booking your MOT.
Is the Bentley Arnage R Auto reliable?
With a 5.9% MOT failure rate, the Arnage R Auto is more reliable than average compared to the UK average of ~40%.
What should I check before an MOT on my Bentley Arnage R Auto?
Based on failure data, focus on: Seat Belts and Supplementary Restraint Systems (2.9%); Exhaust, Fuel and Emissions (2.9%). These are the areas most likely to cause a fail. Also check all lights, tyres (minimum 1.6mm tread), and windscreen condition — these are quick wins that apply to all cars.
Based on DVSA anonymised MOT test data (2005–2024). Crown copyright, Open Government Licence v3.0.