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2021 BMW 520d M Sport Mhev Auto MOT Pass Rate

Pass rate for 520d M Sport Mhev Auto models manufactured in 2021, based on 2,722 real MOT test results.

87.4%
Pass Rate
12.6%
Fail Rate
2,722
Total Tests
33,842
Avg Mileage

Data from official DVSA MOT testing records

This page shows all 520d M Sport Mhev Auto cars tested in 2021. Want to see how cars built in 2021 hold up over time?

View 2021 BMW 520d M Sport Mhev Auto vintage page → (87.2% current pass rate)

2021 BMW 520d M Sport Mhev Auto MOT Analysis

The 2021 BMW 520d M Sport Mhev Auto has an MOT pass rate of 87.4% based on 2,722 tests — well above the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 33,842 miles on the odometer. With a 12.6% failure rate, the 2021 520d M Sport Mhev Auto is rated as "Excellent" for MOT reliability.

The leading cause of MOT failure for the 2021 BMW 520d M Sport Mhev Auto is Tyres, responsible for 14.0% 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 1.7%. Visibility follows at 1.6%.

Top failures specific to 2021 models only. The overall 520d M Sport Mhev Auto page may show different rankings.

What Fails Most

What Fails on This Car?

Click a category to see specific failure items.

View as table
MOT failure categories ranked by failure rate
RankFailure CategoryRate (%)Count
1Tyres14.0%381
2Lamps, Reflectors And Electrical Equipment1.7%47
3Visibility1.6%44
4Non-component Advisories1.5%41
5Identification Of The Vehicle1.1%29
6Body, Chassis, Structure1.0%26
7Noise, Emissions And Leaks0.7%19
8Road Wheels0.6%17
9Suspension0.2%5
10Brakes0.2%5

Failures per 10,000 Miles

avg. 33,842 mi

For 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.

Tyres4.14% per 10K miLamps & Electrical0.51% per 10K miVisibility0.48% per 10K miNon-component advisories0.45% per 10K miIdentification of the vehicle0.31% per 10K miBody & Structure0.28% per 10K miNoise, emissions and leaks0.21% per 10K miWheels0.18% per 10K miSuspension0.05% per 10K miBrakes0.05% per 10K miSeat Belts0.01% per 10K miOther0.01% per 10K mi
View as table
Mileage-normalised failure rates by category
CategoryRate / 10K miRaw %Count
Tyres4.1414.0%381
Lamps & Electrical0.511.7%47
Visibility0.481.6%44
Non-component advisories0.451.5%41
Identification of the vehicle0.311.1%29
Body & Structure0.281.0%26
Noise, emissions and leaks0.210.7%19
Wheels0.180.6%17
Suspension0.050.2%5
Brakes0.050.2%5
Seat Belts0.010.0%1
Other0.010.0%1

Mileage Statistics

33,842
Mean
23,994
Median
12,907
25th Percentile
38,819
75th Percentile
3.72% failures per 10K miles

Mileage-adjusted failure rate — accounts for how much this model year is typically driven.

About This Data

The 2021 BMW 520d M Sport Mhev Auto has an MOT pass rate of 87.4% based on 2,722 tests — well above the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 33,842 miles on the odometer. With a 12.6% failure rate, the 2021 520d M Sport Mhev Auto is rated as "Excellent" for MOT reliability.

If you own or are considering buying a 2021 BMW 520d M Sport Mhev Auto, 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 33,842 miles, many of these vehicles are still in good mechanical condition.

Tyres — 14.0% of failures

Tyres issues account for 14.0% of MOT failures on 2021 BMW 520d M Sport Mhev Auto 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 — 1.7% of failures

Lamps, reflectors and electrical equipment issues account for 1.7% of MOT failures on 2021 BMW 520d M Sport Mhev Auto 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.

Visibility — 1.6% of failures

Visibility issues account for 1.6% of MOT failures on 2021 BMW 520d M Sport Mhev Auto models. 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.

Based on DVSA anonymised MOT test data (2005–2024). Crown copyright, Open Government Licence v3.0.

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