Mercedes-Benz Amg A 45 S 4matic+ Plus Auto MOT Pass Rate
Overall pass rate across all manufacture years, based on 1,789 real MOT test results. Failure rate: 9.6%.
Data from official DVSA MOT testing records
Mercedes-Benz Amg A 45 S 4matic+ Plus Auto MOT Reliability Overview
The Mercedes-Benz Amg A 45 S 4matic+ Plus Auto is a niche vehicle in the UK, with 1,789 MOT test results recorded in our database spanning 4 manufacture years. It has an overall MOT pass rate of 90.4% and a failure rate of 9.6%, which is well above the UK average of approximately 37%.
Based on this data, the Mercedes-Benz Amg A 45 S 4matic+ Plus Auto earns a "Excellent" reliability rating. The average Mercedes-Benz Amg A 45 S 4matic+ Plus Auto presents for MOT with approximately 24,117 miles on the clock. Manufacture year matters: 2022 models achieve the highest pass rate at 100.0%, while 2019 models have the lowest at 88.8%. This 11.2 percentage point difference suggests notable variation in build quality or component durability across production years.
The most common MOT failure for the Mercedes-Benz Amg A 45 S 4matic+ Plus Auto is Tyres, affecting 13.1% 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 1.6%. Non-component advisories rounds out the top three at 1.4%. 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
📈 How Each Vintage Ages
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 | Tyres | 13.1% | 235 |
| 2 | Brakes | 1.6% | 28 |
| 3 | Visibility | 1.4% | 25 |
| 4 | Non-component Advisories | 1.4% | 25 |
| 5 | Identification Of The Vehicle | 1.3% | 24 |
| 6 | Noise, Emissions And Leaks | 1.3% | 23 |
| 7 | Lamps, Reflectors And Electrical Equipment | 0.7% | 13 |
| 8 | Suspension | 0.5% | 9 |
| 9 | Body, Chassis, Structure | 0.1% | 2 |
| 10 | Road Wheels | 0.1% | 2 |
| 11 | Steering | 0.1% | 1 |
Failures per 10,000 Miles
avg. 24,117 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 | 5.45 | 13.1% | 235 |
| Brakes | 0.65 | 1.6% | 28 |
| Visibility | 0.58 | 1.4% | 25 |
| Non-component advisories | 0.58 | 1.4% | 25 |
| Identification of the vehicle | 0.56 | 1.3% | 24 |
| Noise, emissions and leaks | 0.53 | 1.3% | 23 |
| Lamps & Electrical | 0.30 | 0.7% | 13 |
| Suspension | 0.21 | 0.5% | 9 |
| Body & Structure | 0.05 | 0.1% | 2 |
| Wheels | 0.05 | 0.1% | 2 |
| Steering | 0.02 | 0.1% | 1 |
🚗 Similar Cars to Consider
Mileage at MOT
The average Mercedes-Benz Amg A 45 S 4matic+ Plus Auto has 24,117 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 Mercedes-Benz Amg A 45 S 4matic+ Plus Auto has a mileage-adjusted failure rate of 3.98% per 10,000 miles driven. The average across all makes is 5.38%, so this model is better than average.
About Mercedes-Benz Amg A 45 S 4matic+ Plus Auto MOT Data
The Mercedes-Benz Amg A 45 S 4matic+ Plus Auto is a niche vehicle in the UK, with 1,789 MOT test results recorded in our database spanning 4 manufacture years. It has an overall MOT pass rate of 90.4% and a failure rate of 9.6%, which is well above the UK average of approximately 37%.
For Mercedes-Benz Amg A 45 S 4matic+ Plus Auto 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 Amg A 45 S 4matic+ Plus Auto is likely to perform.
Tyres — 13.1% of failures
Tyres issues account for 13.1% of MOT failures on the Mercedes-Benz Amg A 45 S 4matic+ Plus Auto. 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 — 1.6% of failures
Brakes issues account for 1.6% of MOT failures on the Mercedes-Benz Amg A 45 S 4matic+ Plus Auto. 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).
Non-component advisories — 1.4% of failures
Non-component advisories issues account for 1.4% of MOT failures on the Mercedes-Benz Amg A 45 S 4matic+ Plus Auto. Non-component advisories issues are a common cause of MOT failure. Regular inspection and maintenance of these components helps ensure your vehicle passes its MOT. Typical repair costs: £100–400. Pre-MOT check: Have this system checked during regular servicing. Look for warning signs like unusual noises, vibrations, or dashboard warning lights.
Frequently Asked Questions
What is the MOT pass rate for the Mercedes-Benz Amg A 45 S 4matic+ Plus Auto?
Based on 1,789 MOT tests in our database, the Mercedes-Benz Amg A 45 S 4matic+ Plus Auto has an overall pass rate of 90.4% (9.6% fail rate).
What are the most common MOT failures on a Mercedes-Benz Amg A 45 S 4matic+ Plus Auto?
The top 3 reasons a Mercedes-Benz Amg A 45 S 4matic+ Plus Auto fails its MOT are: 1. Tyres (13.1%), 2. Brakes (1.6%), 3. Non-component advisories (1.4%). Check these areas before booking your MOT.
Is the Mercedes-Benz Amg A 45 S 4matic+ Plus Auto reliable?
With a 9.6% MOT failure rate, the Amg A 45 S 4matic+ Plus Auto is more reliable than average compared to the UK average of ~40%.
What should I check before an MOT on my Mercedes-Benz Amg A 45 S 4matic+ Plus Auto?
Based on failure data, focus on: Tyres (13.1%); Brakes (1.6%); Non-component advisories (1.4%). 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.