BMW 420D M Sport Reliability, MOT Pass Rate & Common Faults
Free BMW 420D M Sport car check
Is the BMW 420D M Sport reliable? We analysed 667 real MOT tests across 178 vehicles to find out.
Got a specific BMW 420D M Sport? Enter the reg for a free check:
The BMW 420D M Sport 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.
BMW 420D M Sport Number Plates
Number plates registered to a BMW 420D M Sport. Click on any registration for full vehicle details — including MOT history, mileage records, previous owners and damage history.
BMW 420D M Sport Mileage — What's Normal?
How many miles does a typical BMW 420D M Sport 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 Mileage Distribution
Total mileage recorded across all BMW 420D M Sport MOT tests. If the car you're looking at is above the 75th percentile, it's done more miles than most.
How Does the BMW 420D M Sport 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 THIS CAR | 90.7% | 667 | 82,074 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 |
| Renault Master LH35 Business DCI | 74.6% | 966 | 89,416 mi | — yrs |
Compared to the BMW 3 Series (75.1% pass rate) and the BMW 118 (81.5% pass rate), the BMW 420D M Sport outperforms both on MOT reliability.
Found a BMW 420D M Sport 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 SportShould you buy a used BMW 420D M Sport?
The BMW 420D M Sport has an overall MOT pass rate of 90.7% across 667 real MOT tests — comfortably above the UK average, which puts it among the more reliable models on UK roads.
A typical BMW 420D M Sport owner drives around 9,219 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.