2015 Mercedes-Benz B MOT Pass Rate
Pass rate for B models manufactured in 2015, based on 13,109 real MOT test results.
Data from official DVSA MOT testing records
This page shows all B cars tested in 2015. Want to see how cars built in 2015 hold up over time?
View 2015 Mercedes-Benz B vintage page → (86.0% current pass rate)2015 Mercedes-Benz B MOT Analysis
The 2015 Mercedes-Benz B has an MOT pass rate of 87.3% based on 13,109 tests — well above the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 32,172 miles on the odometer. With a 12.7% failure rate, the 2015 B is rated as "Excellent" for MOT reliability.
The leading cause of MOT failure for the 2015 Mercedes-Benz B is Lamps, reflectors and electrical equipment, responsible for 0.0% of failures. 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 range from £5–50. Body, chassis, structure is the second most common issue at 0.0%. Noise, emissions and leaks follows at 0.0%.
Top failures specific to 2015 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 |
|---|
Mileage Statistics
Mileage-adjusted failure rate — accounts for how much this model year is typically driven.
About This Data
The 2015 Mercedes-Benz B has an MOT pass rate of 87.3% based on 13,109 tests — well above the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 32,172 miles on the odometer. With a 12.7% failure rate, the 2015 B is rated as "Excellent" for MOT reliability.
If you own or are considering buying a 2015 Mercedes-Benz B, you can expect reliable MOT performance overall. Before your MOT, pay particular attention to lamps, reflectors and electrical equipment: 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. With relatively low average mileage of 32,172 miles, many of these vehicles are still in good mechanical condition.
Lamps, reflectors and electrical equipment — 0.0% of failures
Lamps, reflectors and electrical equipment issues account for 0.0% of MOT failures on 2015 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.
Body, chassis, structure — 0.0% of failures
Body, chassis, structure issues account for 0.0% of MOT failures on 2015 Mercedes-Benz B models. Body and structure failures include excessive corrosion, sharp edges, loose panels, and damage to the vehicle frame. Rust is the primary concern, especially on older vehicles or those exposed to road salt. Typical repair costs: £100–500+. Pre-MOT check: Inspect sills, wheel arches, door bottoms, and the chassis for rust. Surface rust is acceptable but structural corrosion or holes will fail. Check that all doors, bonnet, and boot close securely.
Noise, emissions and leaks — 0.0% of failures
Noise, emissions and leaks issues account for 0.0% of MOT failures on 2015 Mercedes-Benz B models. 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.
Based on DVSA anonymised MOT test data (2005–2024). Crown copyright, Open Government Licence v3.0.