BMW 123 Reliability, MOT Pass Rate & Common Faults
Free BMW 123 car check
Is the BMW 123 reliable? We analysed 78,838 real MOT tests across 5,186 vehicles to find out.
Got a specific BMW 123? Enter the reg for a free check:
The BMW 123 is above average for reliability based on real UK MOT data. Common problems include tyre tread depth below requirements of 1.6mm, tyre has ply or cords exposed and brake pad(s) less than 1.5 mm thick. Here's everything you need to know before buying a used BMW 123.
BMW 123 Number Plates
Number plates registered to a BMW 123. Click on any registration for full vehicle details — including MOT history, mileage records, previous owners and damage history.
BMW 123 MOT Pass Rate by Year
How likely is a BMW 123 to pass its MOT? Here's the pass rate for each registration year, newest first.
BMW 123 Problems — What Goes Wrong?
The most common reasons a BMW 123 fails its MOT, ranked by how often they occur. Check for these problems before you buy.
BMW 123 Common Faults & Problems
These are the most common serious faults found on BMW 123 models during MOT testing — flagged as dangerous or major failures that need immediate attention.
BMW 123 Mileage — What's Normal?
How many miles does a typical BMW 123 owner drive per year? Use this to check if a car you're looking at has suspiciously low or high mileage.
BMW 123 MOT Data by Registration Year
Full breakdown of pass rate and mileage for each year. Use this to compare the BMW 123 year you're looking at.
| Year | Tests | Pass Rate | Low Mi. | Typical Mi. | High Mi. |
|---|---|---|---|---|---|
| 2013 | 471 | 80.9% | 41,898 | 62,145 | 86,860 |
| 2012 | 2,247 | 80.1% | 42,956 | 65,964 | 93,070 |
| 2011 | 7,468 | 81.9% | 45,842 | 71,881 | 100,927 |
| 2010 | 11,236 | 80.9% | 50,923 | 79,670 | 110,317 |
| 2009 | 17,755 | 79.9% | 52,436 | 83,292 | 114,516 |
| 2008 | 32,952 | 79.5% | 54,755 | 86,089 | 117,990 |
| 2007 | 6,413 | 79.2% | 54,157 | 85,262 | 116,768 |
How Long Does a BMW 123 Last?
Based on 5,186 BMW 123 vehicles on UK roads.
BMW 123 Mileage Distribution
Total mileage recorded across all BMW 123 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 123
Based on MOT pass rates across all registration years with sufficient test data.
81.9% MOT pass rate from 7,468 tests
79.2% MOT pass rate from 6,413 tests
The best year to buy a used BMW 123 is 2011, which has the highest MOT pass rate at 81.9% across 7,468 tests. The 2007 model year has the lowest pass rate at 79.2% — if you're looking at one from that year, budget for potential repairs and get a thorough pre-purchase inspection.
How Does the BMW 123 Compare?
MOT pass rates compared to similar models. Click any model for the full breakdown.
| Model | Pass Rate | Tests | Typical Mileage | Lifespan |
|---|---|---|---|---|
| BMW 123 THIS CAR | 80.0% | 78,838 | 82,299 mi | 19 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 |
| Rover 114 | 63.8% | 112,346 | 49,874 mi | 31 yrs |
Compared to the BMW 3 Series (75.1% pass rate) and the BMW 118 (81.5% pass rate), the BMW 123 sits in the middle of the pack on MOT reliability.
Found a BMW 123 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 123Should you buy a used BMW 123?
The BMW 123 has an overall MOT pass rate of 80.0% across 78,838 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 123 are tyre tread depth below requirements of 1.6mm (1,813 recorded failures), tyre has ply or cords exposed (975), and brake pad(s) less than 1.5 mm thick (630). 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.
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 123 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 123 owner drives around 7,303 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 123 models stay on UK roads for around 19 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.