BMW 420D M Sport MHEV Auto Reliability, MOT Pass Rate & Common Faults
Free BMW 420D M Sport MHEV Auto car check
Is the BMW 420D M Sport MHEV Auto reliable? We analysed 4,482 real MOT tests across 2,157 vehicles to find out.
Got a specific BMW 420D M Sport MHEV Auto? Enter the reg for a free check:
The BMW 420D M Sport MHEV Auto is above average for reliability based on real UK MOT data. Here's everything you need to know before buying a used BMW 420D M Sport MHEV Auto.
BMW 420D M Sport MHEV Auto Number Plates
Number plates registered to a BMW 420D M Sport MHEV Auto. Click on any registration for full vehicle details — including MOT history, mileage records, previous owners and damage history.
BMW 420D M Sport MHEV Auto MOT Pass Rate by Year
How likely is a BMW 420D M Sport MHEV Auto to pass its MOT? Here's the pass rate for each registration year, newest first.
BMW 420D M Sport MHEV Auto Common Faults & Problems
These are the most common serious faults found on BMW 420D M Sport MHEV Auto models during MOT testing — flagged as dangerous or major failures that need immediate attention.
BMW 420D M Sport MHEV Auto Mileage — What's Normal?
How many miles does a typical BMW 420D M Sport MHEV Auto owner drive per year? Use this to check if a car you're looking at has suspiciously low or high mileage.
BMW 420D M Sport MHEV Auto MOT Data by Registration Year
Full breakdown of pass rate and mileage for each year. Use this to compare the BMW 420D M Sport MHEV Auto year you're looking at.
| Year | Tests | Pass Rate | Low Mi. | Typical Mi. | High Mi. |
|---|---|---|---|---|---|
| 2023 | 208 | 90.9% | 18,458 | 26,540 | 36,721 |
| 2022 | 1,456 | 88.7% | 22,813 | 31,889 | 44,240 |
| 2021 | 2,393 | 87.6% | 22,652 | 32,386 | 44,268 |
| 2020 | 248 | 92.3% | 23,334 | 32,730 | 49,437 |
How Long Does a BMW 420D M Sport MHEV Auto Last?
Based on 2,157 BMW 420D M Sport MHEV Auto vehicles on UK roads.
BMW 420D M Sport MHEV Auto Mileage Distribution
Total mileage recorded across all BMW 420D M Sport MHEV Auto MOT tests. If the car you're looking at is above the 75th percentile, it's done more miles than most.
Best Year to Buy a Used BMW 420D M Sport MHEV Auto
Based on MOT pass rates across all registration years with sufficient test data.
92.3% MOT pass rate from 248 tests
87.6% MOT pass rate from 2,393 tests
The best year to buy a used BMW 420D M Sport MHEV Auto is 2020, which has the highest MOT pass rate at 92.3% across 248 tests. The 2021 model year has the lowest pass rate at 87.6% — if you're looking at one from that year, budget for potential repairs and get a thorough pre-purchase inspection.
How Does the BMW 420D M Sport MHEV Auto Compare?
MOT pass rates compared to similar models. Click any model for the full breakdown.
| Model | Pass Rate | Tests | Typical Mileage | Lifespan |
|---|---|---|---|---|
| BMW 420D M Sport MHEV Auto THIS CAR | 88.5% | 4,482 | 32,411 mi | — yrs |
| BMW 3 Series | 75.1% | 12,840,406 | 90,743 mi | 37 yrs |
| BMW 118 | 81.5% | 1,923,256 | 64,042 mi | 22 yrs |
| BMW X5 | 77% | 1,735,343 | 83,401 mi | 25 yrs |
| Honda CBR400RR | 80.4% | 4,149 | 34,500 mi | 38 yrs |
Compared to the BMW 3 Series (75.1% pass rate) and the BMW 118 (81.5% pass rate), the BMW 420D M Sport MHEV Auto outperforms both on MOT reliability.
Found a BMW 420D M Sport MHEV Auto you like?
Run a full vehicle history check on the specific car. See finance, stolen, write-off, mileage and MOT data for that exact vehicle.
Check a specific BMW 420D M Sport MHEV AutoShould you buy a used BMW 420D M Sport MHEV Auto?
The BMW 420D M Sport MHEV Auto has an overall MOT pass rate of 88.5% across 4,482 real MOT tests — comfortably above the UK average, which puts it among the more reliable models on UK roads.
On the safety side, the most frequently flagged dangerous fault is tyre tread depth below requirements of 1.6mm. Dangerous faults cause an immediate MOT failure and mean the vehicle is not roadworthy until repaired. If you're viewing a BMW 420D M Sport MHEV Auto with an expired or recently passed MOT, ask the seller whether any dangerous faults were found and fixed during the last test.
A typical BMW 420D M Sport MHEV Auto owner drives around 8,325 miles per year. If the car you're looking at is significantly above this, expect more wear on suspension, brakes and tyres. If it's well below, the vehicle may have been sitting unused — check for perished rubber, corroded discs and stale fluids.
Before committing to a purchase, we recommend running a full vehicle history check on the specific car. This will reveal any outstanding finance, stolen markers, write-off history and mileage discrepancies that the seller may not disclose — and that the MOT data alone can't tell you.