BMW 420D M Sport Auto Reliability, MOT Pass Rate & Common Faults
Free BMW 420D M Sport Auto car check
Is the BMW 420D M Sport Auto reliable? We analysed 2,755 real MOT tests across 778 vehicles to find out.
Got a specific BMW 420D M Sport Auto? Enter the reg for a free check:
The BMW 420D M Sport Auto is above average for reliability based on real UK MOT data. Common problems include anti-roll bar has excessive play in a pin/bush, tyre tread depth below requirements of 1.6mm and stop lamp not working. Here's everything you need to know before buying a used BMW 420D M Sport Auto.
BMW 420D M Sport Auto Number Plates
Number plates registered to a BMW 420D M Sport Auto. Click on any registration for full vehicle details — including MOT history, mileage records, previous owners and damage history.
BMW 420D M Sport Auto Problems — What Goes Wrong?
The most common reasons a BMW 420D M Sport Auto fails its MOT, ranked by how often they occur. Check for these problems before you buy.
BMW 420D M Sport Auto Mileage — What's Normal?
How many miles does a typical BMW 420D M Sport 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 Auto Mileage Distribution
Total mileage recorded across all BMW 420D M Sport Auto 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 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 Auto THIS CAR | 91.8% | 2,755 | 67,219 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 |
| Kawasaki ZG1300 | 90.4% | 996 | 31,097 mi | 42 yrs |
Compared to the BMW 3 Series (75.1% pass rate) and the BMW 118 (81.5% pass rate), the BMW 420D M Sport Auto outperforms both on MOT reliability.
Found a BMW 420D M Sport 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 AutoShould you buy a used BMW 420D M Sport Auto?
The BMW 420D M Sport Auto has an overall MOT pass rate of 91.8% across 2,755 real MOT tests — comfortably above the UK average, which puts it among the more reliable models on UK roads.
The most common problems on the BMW 420D M Sport Auto are anti-roll bar has excessive play in a pin/bush (2 recorded failures), tyre tread depth below requirements of 1.6mm (2), and stop lamp not working (2). These are the faults most likely to cause an MOT failure on this model, so check for them carefully on any test drive or pre-purchase inspection. Many are wear-and-tear items that can be budgeted for, but a car that's already failing on multiple fronts may signal neglected maintenance.
A typical BMW 420D M Sport Auto owner drives around 8,262 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.