2009 Mercedes-Benz B MOT Pass Rate
Pass rate for B models manufactured in 2009, based on 13,940 real MOT test results.
Data from official DVSA MOT testing records
This page shows all B cars tested in 2009. Want to see how cars built in 2009 hold up over time?
View 2009 Mercedes-Benz B vintage page → (64.6% current pass rate)2009 Mercedes-Benz B MOT Analysis
The 2009 Mercedes-Benz B has an MOT pass rate of 67.8% based on 13,940 tests — slightly above the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 70,793 miles on the odometer. With a 32.2% failure rate, the 2009 B is rated as "Good" for MOT reliability.
The leading cause of MOT failure for the 2009 Mercedes-Benz B is Tyres, responsible for 0.0% 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 0.0%. Non-component advisories follows at 0.0%.
Top failures specific to 2009 models only. The overall B 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 |
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Mileage Statistics
Mileage-adjusted failure rate — accounts for how much this model year is typically driven.
About This Data
The 2009 Mercedes-Benz B has an MOT pass rate of 67.8% based on 13,940 tests — slightly above the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 70,793 miles on the odometer. With a 32.2% failure rate, the 2009 B is rated as "Good" for MOT reliability.
If you own or are considering buying a 2009 Mercedes-Benz B, 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. At 70,793 average miles, these vehicles are in the mid-range where component wear starts to become a factor.
Tyres — 0.0% of failures
Tyres issues account for 0.0% of MOT failures on 2009 Mercedes-Benz B 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 — 0.0% of failures
Lamps, reflectors and electrical equipment issues account for 0.0% of MOT failures on 2009 Mercedes-Benz B 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.
Non-component advisories — 0.0% of failures
Non-component advisories issues account for 0.0% of MOT failures on 2009 Mercedes-Benz B models. 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.
Based on DVSA anonymised MOT test data (2005–2024). Crown copyright, Open Government Licence v3.0.