2021 BMW 840i Auto MOT Pass Rate
Pass rate for 840i Auto models manufactured in 2021, based on 282 real MOT test results.
Data from official DVSA MOT testing records
This page shows all 840i Auto cars tested in 2021. Want to see how cars built in 2021 hold up over time?
View 2021 BMW 840i Auto vintage page → (84.4% current pass rate)2021 BMW 840i Auto MOT Analysis
The 2021 BMW 840i Auto has an MOT pass rate of 84.8% based on 282 tests — well above the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 25,406 miles on the odometer. With a 15.2% failure rate, the 2021 840i Auto is rated as "Excellent" for MOT reliability.
The leading cause of MOT failure for the 2021 BMW 840i Auto is Tyres, responsible for 20.6% 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. Brakes is the second most common issue at 3.5%. Identification of the vehicle follows at 3.2%.
Top failures specific to 2021 models only. The overall 840i 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
| Rank | Failure Category | Rate (%) | Count |
|---|---|---|---|
| 1 | Tyres | 20.6% | 58 |
| 2 | Brakes | 3.5% | 10 |
| 3 | Identification Of The Vehicle | 3.2% | 9 |
| 4 | Road Wheels | 1.1% | 3 |
| 5 | Suspension | 0.7% | 2 |
| 6 | Lamps, Reflectors And Electrical Equipment | 0.4% | 1 |
Failures per 10,000 Miles
avg. 25,406 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 | 8.10 | 20.6% | 58 |
| Brakes | 1.40 | 3.5% | 10 |
| Identification of the vehicle | 1.26 | 3.2% | 9 |
| Wheels | 0.42 | 1.1% | 3 |
| Suspension | 0.28 | 0.7% | 2 |
| Lamps & Electrical | 0.14 | 0.4% | 1 |
Mileage Statistics
Mileage-adjusted failure rate — accounts for how much this model year is typically driven.
About This Data
The 2021 BMW 840i Auto has an MOT pass rate of 84.8% based on 282 tests — well above the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 25,406 miles on the odometer. With a 15.2% failure rate, the 2021 840i Auto is rated as "Excellent" for MOT reliability.
If you own or are considering buying a 2021 BMW 840i 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 25,406 miles, many of these vehicles are still in good mechanical condition.
Tyres — 20.6% of failures
Tyres issues account for 20.6% of MOT failures on 2021 BMW 840i 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.
Brakes — 3.5% of failures
Brakes issues account for 3.5% of MOT failures on 2021 BMW 840i Auto 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).
Identification of the vehicle — 3.2% of failures
Identification of the vehicle issues account for 3.2% of MOT failures on 2021 BMW 840i Auto models. Identification failures relate to the Vehicle Identification Number (VIN) and registration plate. The VIN must be permanently displayed and legible, and the registration plate must meet British Standard formatting. Typical repair costs: £10–50. Pre-MOT check: Ensure the VIN plate is visible and legible (usually in the windscreen or under the bonnet). Check that number plates are clean, undamaged, and use the correct font and spacing.
Based on DVSA anonymised MOT test data (2005–2024). Crown copyright, Open Government Licence v3.0.