2009 Mercedes A 170 MOT Pass Rate
Pass rate for A 170 models manufactured in 2009, based on 2,739 real MOT test results.
Data from official DVSA MOT testing records
This page shows all A 170 cars tested in 2009. Want to see how cars built in 2009 hold up over time?
View 2009 Mercedes A 170 vintage page → (77.9% current pass rate)2009 Mercedes A 170 MOT Analysis
The 2009 Mercedes A 170 has an MOT pass rate of 86.3% based on 2,739 tests — well above the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 34,897 miles on the odometer. With a 13.7% failure rate, the 2009 A 170 is rated as "Excellent" for MOT reliability.
The leading cause of MOT failure for the 2009 Mercedes A 170 is Tyres, responsible for 1.0% of failures. 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 range from £50–200 per tyre. Lamps, reflectors and electrical equipment is the second most common issue at 0.8%. Brakes follows at 0.7%.
Top failures specific to 2009 models only. The overall A 170 page may show different rankings.
What Fails Most
What Fails on This Car?
Click a category to see specific failure items.
View as table
| Rank | Failure Category | Rate (%) | Count |
|---|---|---|---|
| 1 | Tyres | 1.0% | 28 |
| 2 | Lamps, Reflectors And Electrical Equipment | 0.8% | 21 |
| 3 | Brakes | 0.7% | 18 |
| 4 | Visibility | 0.5% | 13 |
| 5 | Suspension | 0.5% | 13 |
| 6 | Non-component Advisories | 0.2% | 5 |
| 7 | Body, Chassis, Structure | 0.2% | 5 |
| 8 | Identification Of The Vehicle | 0.1% | 3 |
| 9 | Steering | 0.1% | 3 |
| 10 | Seat Belts And Supplementary Restraint Systems | 0.1% | 2 |
Failures per 10,000 Miles
avg. 34,897 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 | 0.29 | 1.0% | 28 |
| Lamps & Electrical | 0.22 | 0.8% | 21 |
| Brakes | 0.19 | 0.7% | 18 |
| Visibility | 0.14 | 0.5% | 13 |
| Suspension | 0.14 | 0.5% | 13 |
| Non-component advisories | 0.05 | 0.2% | 5 |
| Body & Structure | 0.05 | 0.2% | 5 |
| Identification of the vehicle | 0.03 | 0.1% | 3 |
| Steering | 0.03 | 0.1% | 3 |
| Seat Belts | 0.02 | 0.1% | 2 |
Mileage Statistics
Mileage-adjusted failure rate — accounts for how much this model year is typically driven.
About This Data
The 2009 Mercedes A 170 has an MOT pass rate of 86.3% based on 2,739 tests — well above the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 34,897 miles on the odometer. With a 13.7% failure rate, the 2009 A 170 is rated as "Excellent" for MOT reliability.
If you own or are considering buying a 2009 Mercedes A 170, you can expect reliable MOT performance overall. Before your MOT, pay particular attention to tyres: 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. With relatively low average mileage of 34,897 miles, many of these vehicles are still in good mechanical condition.
Tyres — 1.0% of failures
Tyres issues account for 1.0% of MOT failures on 2009 Mercedes A 170 models. 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.
Lamps, reflectors and electrical equipment — 0.8% of failures
Lamps, reflectors and electrical equipment issues account for 0.8% of MOT failures on 2009 Mercedes A 170 models. Lighting failures cover all external lights: headlights, tail lights, brake lights, indicators, fog lights, and reflectors. A single blown bulb will cause an MOT fail. This is one of the most preventable failure categories. Typical repair costs: £5–50. Pre-MOT check: Walk around the car and check every light — headlights (dipped and main beam), side lights, tail lights, brake lights, indicators, hazard lights, reverse light, rear fog light, and number plate lights. Replace any blown bulbs before the test.
Brakes — 0.7% of failures
Brakes issues account for 0.7% of MOT failures on 2009 Mercedes A 170 models. 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).
Based on DVSA anonymised MOT test data (2005–2024). Crown copyright, Open Government Licence v3.0.