BMW 635 Reliability, MOT Pass Rate & Common Faults
Free BMW 635 car check
Is the BMW 635 reliable? We analysed 51,017 real MOT tests across 4,019 vehicles to find out.
Got a specific BMW 635? Enter the reg for a free check:
The BMW 635 is above average for reliability based on real UK MOT data. Common problems include suspension component mounting prescribed area is excessively corroded, tyre has ply or cords exposed and windscreen washer provides insufficient washer liquid. Here's everything you need to know before buying a used BMW 635.
BMW 635 Number Plates
Number plates registered to a BMW 635. Click on any registration for full vehicle details — including MOT history, mileage records, previous owners and damage history.
BMW 635 MOT Pass Rate by Year
How likely is a BMW 635 to pass its MOT? Here's the pass rate for each registration year, newest first.
BMW 635 Problems — What Goes Wrong?
The most common reasons a BMW 635 fails its MOT, ranked by how often they occur. Check for these problems before you buy.
BMW 635 Mileage — What's Normal?
How many miles does a typical BMW 635 owner drive per year? Use this to check if a car you're looking at has suspiciously low or high mileage.
BMW 635 MOT Data by Registration Year
Full breakdown of pass rate and mileage for each year. Use this to compare the BMW 635 year you're looking at.
| Year | Tests | Pass Rate | Low Mi. | Typical Mi. | High Mi. |
|---|---|---|---|---|---|
| 2011 | 150 | 85.3% | 33,243 | 56,492 | 75,428 |
| 2010 | 8,347 | 82.4% | 50,868 | 78,458 | 108,252 |
| 2009 | 8,716 | 81.8% | 52,326 | 81,288 | 113,978 |
| 2008 | 12,410 | 82.1% | 55,434 | 86,440 | 120,535 |
| 2007 | 4,613 | 82.1% | 60,925 | 94,589 | 132,132 |
| 1990 | 874 | 75.5% | 75,970 | 104,645 | 133,677 |
| 1989 | 3,965 | 74.2% | 87,925 | 120,615 | 150,229 |
| 1988 | 3,192 | 71.8% | 94,668 | 121,499 | 147,949 |
| 1987 | 1,665 | 69.6% | 91,082 | 118,410 | 146,726 |
| 1986 | 2,140 | 71.6% | 89,432 | 113,396 | 144,053 |
| 1985 | 1,630 | 68.4% | 85,788 | 117,171 | 146,326 |
| 1984 | 999 | 68.6% | 88,459 | 114,375 | 141,074 |
| 1983 | 814 | 69.2% | 66,976 | 102,484 | 124,737 |
| 1982 | 619 | 70.0% | 70,280 | 101,197 | 118,975 |
| 1981 | 244 | 69.3% | 70,232 | 98,104 | 125,110 |
| 1980 | 207 | 68.6% | 60,502 | 87,495 | 114,086 |
| 1979 | 131 | 63.4% | 76,688 | 87,050 | 121,212 |
How Long Does a BMW 635 Last?
Based on 4,019 BMW 635 vehicles on UK roads.
BMW 635 Mileage Distribution
Total mileage recorded across all BMW 635 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 635
Based on MOT pass rates across all registration years with sufficient test data.
85.3% MOT pass rate from 150 tests
63.4% MOT pass rate from 131 tests
The best year to buy a used BMW 635 is 2011, which has the highest MOT pass rate at 85.3% across 150 tests. The 1979 model year has the lowest pass rate at 63.4% — if you're looking at one from that year, budget for potential repairs and get a thorough pre-purchase inspection.
How Does the BMW 635 Compare?
MOT pass rates compared to similar models. Click any model for the full breakdown.
| Model | Pass Rate | Tests | Typical Mileage | Lifespan |
|---|---|---|---|---|
| BMW 635 THIS CAR | 78.7% | 51,017 | 94,611 mi | 43 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 |
| Toyota Landcruiser Colorado | 71.5% | 45,117 | 124,577 mi | 30 yrs |
Compared to the BMW 3 Series (75.1% pass rate) and the BMW 118 (81.5% pass rate), the BMW 635 sits in the middle of the pack on MOT reliability.
Found a BMW 635 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 635Should you buy a used BMW 635?
The BMW 635 has an overall MOT pass rate of 78.7% across 51,017 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 635 are suspension component mounting prescribed area is excessively corroded (1,161 recorded failures), tyre has ply or cords exposed (881), and windscreen washer provides insufficient washer liquid (775). 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 635 owner drives around 4,766 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.
In terms of longevity, most BMW 635 models stay on UK roads for around 43 years — a strong showing that suggests solid build quality and readily available parts. If you're buying one that's already approaching that window, the data suggests it has plenty of life left provided it's been maintained.
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.