Audi A6 S Line Black Ed 40 Tdi Sa MOT Pass Rate
Overall pass rate across all manufacture years, based on 3,918 real MOT test results. Failure rate: 9.0%.
Data from official DVSA MOT testing records
Audi A6 S Line Black Ed 40 Tdi Sa MOT Reliability Overview
The Audi A6 S Line Black Ed 40 Tdi Sa is a niche vehicle in the UK, with 3,918 MOT test results recorded in our database spanning 3 manufacture years. It has an overall MOT pass rate of 91.0% and a failure rate of 9.0%, which is well above the UK average of approximately 37%.
Based on this data, the Audi A6 S Line Black Ed 40 Tdi Sa earns a "Excellent" reliability rating. The average Audi A6 S Line Black Ed 40 Tdi Sa presents for MOT with approximately 40,182 miles on the clock. Manufacture year matters: 2020 models achieve the highest pass rate at 92.4%, while 2021 models have the lowest at 88.4%. This 4.0 percentage point difference suggests notable variation in build quality or component durability across production years.
The most common MOT failure for the Audi A6 S Line Black Ed 40 Tdi Sa is Tyres, affecting 11.7% of all tests. Tyre failures include tread depth below the legal minimum of 1.6mm, cuts, bulges, exposed cords, and incorrect tyre pressure. Tyres are one of the most common and easiest-to-prevent MOT failures. The second most common issue is Brakes at 4.6%. Visibility rounds out the top three at 1.5%. Together, these top 3 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
Best Year to Buy
All manufacture years perform similarly at ~92.4%.
Based on 2024 MOT test results only — the most recent data available. "Built" = year of manufacture. Cars need their first MOT at 3 years old, so the newest cars shown are from ~3 years ago.
Bar chart showing pass rate by manufacture year from 2019 to 2021
📈 How Each Vintage Ages
* 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 | Tyres | 11.7% | 458 |
| 2 | Brakes | 4.6% | 182 |
| 3 | Visibility | 1.5% | 60 |
| 4 | Lamps, Reflectors And Electrical Equipment | 1.4% | 54 |
| 5 | Identification Of The Vehicle | 1.3% | 51 |
| 6 | Suspension | 1.1% | 44 |
| 7 | Noise, Emissions And Leaks | 0.8% | 33 |
| 8 | Non-component Advisories | 0.7% | 29 |
| 9 | Seat Belts And Supplementary Restraint Systems | 0.3% | 10 |
| 10 | Road Wheels | 0.2% | 7 |
| 11 | Body, Chassis, Structure | 0.1% | 5 |
Failures per 10,000 Miles
avg. 40,182 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 |
|---|---|---|---|
| Tyres | 2.91 | 11.7% | 458 |
| Brakes | 1.16 | 4.6% | 182 |
| Visibility | 0.38 | 1.5% | 60 |
| Lamps & Electrical | 0.34 | 1.4% | 54 |
| Identification of the vehicle | 0.32 | 1.3% | 51 |
| Suspension | 0.28 | 1.1% | 44 |
| Noise, emissions and leaks | 0.21 | 0.8% | 33 |
| Non-component advisories | 0.18 | 0.7% | 29 |
| Seat Belts | 0.06 | 0.3% | 10 |
| Wheels | 0.04 | 0.2% | 7 |
| Body & Structure | 0.03 | 0.1% | 5 |
| Steering | 0.01 | 0.0% | 1 |
🚗 Similar Cars to Consider
Mileage at MOT
The average Audi A6 S Line Black Ed 40 Tdi Sa has 40,182 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 Audi A6 S Line Black Ed 40 Tdi Sa has a mileage-adjusted failure rate of 2.24% per 10,000 miles driven. The average across all makes is 5.38%, so this model is better than average.
About Audi A6 S Line Black Ed 40 Tdi Sa MOT Data
The Audi A6 S Line Black Ed 40 Tdi Sa is a niche vehicle in the UK, with 3,918 MOT test results recorded in our database spanning 3 manufacture years. It has an overall MOT pass rate of 91.0% and a failure rate of 9.0%, which is well above the UK average of approximately 37%.
For Audi A6 S Line Black Ed 40 Tdi Sa owners, these results suggest a reliable vehicle that generally passes its MOT without major issues. Focus your pre-MOT checks on tyres and brakes 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 A6 S Line Black Ed 40 Tdi Sa is likely to perform.
Tyres — 11.7% of failures
Tyres issues account for 11.7% of MOT failures on the Audi A6 S Line Black Ed 40 Tdi Sa. Tyre failures include tread depth below the legal minimum of 1.6mm, cuts, bulges, exposed cords, and incorrect tyre pressure. Tyres are one of the most common and easiest-to-prevent MOT failures. Typical repair costs: £50–200 per tyre. Pre-MOT check: Check tread depth with a 20p coin — if the outer band is visible, the tyre is too worn. Look for bulges, cuts, or embedded objects. Ensure all tyres match the recommended size and load rating.
Brakes — 4.6% of failures
Brakes issues account for 4.6% of MOT failures on the Audi A6 S Line Black Ed 40 Tdi Sa. Brake-related failures include worn brake pads, corroded brake discs, leaking brake lines, and faulty brake servos. These are safety-critical components — any brake deficiency will result in an MOT fail. Typical repair costs: £150–400. Pre-MOT check: Listen for squealing or grinding noises. Check brake pedal feel — if it feels spongy or goes to the floor, have the system inspected immediately. Look at brake pad thickness through the wheel spokes (minimum 3mm).
Visibility — 1.5% of failures
Visibility issues account for 1.5% of MOT failures on the Audi A6 S Line Black Ed 40 Tdi Sa. Visibility failures relate to the windscreen, wipers, washers, mirrors, and view-obstructing damage. Cracks in the windscreen swept area, ineffective wipers, or empty washer bottles are common causes. Typical repair costs: £10–300. Pre-MOT check: Check the windscreen for chips and cracks — damage larger than 10mm in the driver's swept area or 40mm elsewhere will fail. Test washers and wipers. Ensure both door mirrors are intact and adjustable.
Frequently Asked Questions
What is the MOT pass rate for the Audi A6 S Line Black Ed 40 Tdi Sa?
Based on 3,918 MOT tests in our database, the Audi A6 S Line Black Ed 40 Tdi Sa has an overall pass rate of 91.0% (9.0% fail rate).
What are the most common MOT failures on a Audi A6 S Line Black Ed 40 Tdi Sa?
The top 3 reasons a Audi A6 S Line Black Ed 40 Tdi Sa fails its MOT are: 1. Tyres (11.7%), 2. Brakes (4.6%), 3. Visibility (1.5%). Check these areas before booking your MOT.
Is the Audi A6 S Line Black Ed 40 Tdi Sa reliable?
With a 9.0% MOT failure rate, the A6 S Line Black Ed 40 Tdi Sa is more reliable than average compared to the UK average of ~40%.
What should I check before an MOT on my Audi A6 S Line Black Ed 40 Tdi Sa?
Based on failure data, focus on: Tyres (11.7%); Brakes (4.6%); Visibility (1.5%). 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.