BMW 728 MOT Failures
An analysis of 11,745 real DVSA MOT tests on the BMW 728 — what fails, how often, and how that compares to every other car on UK roads.
Where the BMW 728 fails its MOT
The single biggest MOT failure point on the BMW 728 is brake hoses perished or damaged — this model is 486 times more likely to fail on this item than the average car on UK roads. That makes it an extreme outlier for anyone buying or owning this model. Across 11,745 MOT tests, 18.5% of all BMW 728 tests recorded this as a failure.
Brake failures on the MOT range from worn pads and discs (routine maintenance) to corroded brake lines and seized calipers (more serious). Check for any pulling under braking and listen for grinding.
Other notable weak points include track rod ends worn (205x the fleet average), suspension joint dust cover severely deteriorated (90x the fleet average), suspension joint dust cover missing or no longe... (84x the fleet average), and light unit fault (9.6x the fleet average). These ratios compare the BMW 728's failure rate on each item against the national average for all cars tested — a ratio of 10x means this model fails ten times more often than a typical car.
The failures span 5 categories: Brakes, Steering, Suspension, Seatbelts & Airbags, Bodywork. If you're inspecting a BMW 728 before purchase, these are the areas to focus on — and if any have been flagged as advisories on a previous MOT, they're likely to become failures in the near future.
How failures change with mileage
The BMW 728's weak points shift as the car covers more miles. Understanding these patterns helps you know what to expect — and what to budget for — at each stage of ownership.
Under 60,000 miles
At this mileage, most failures are either design-related or caused by age rather than wear. Components like bushes and drop links may not have been replaced yet, and original-fit parts can deteriorate even on low-mileage cars that spend a lot of time sitting.
For the BMW 728 specifically, the DVSA data shows the most common failures at this mileage are track rod ends worn (205x the average) and brake hoses perished or damaged (146x). suspension joint dust cover severely deteriorated (90x) and suspension joint dust cover missing or no longe... (84x) also appear frequently.
60,000 to 100,000 miles
This is where routine wear items start to show up. Brake components, tyres, and exhaust parts have done serious work by this point. Cars that have been well serviced will show fewer of these failures — this mileage band is where good maintenance really separates the well-kept from the neglected.
For the BMW 728 specifically, the DVSA data shows the most common failures at this mileage are brake hoses perished or damaged (486x the average) and suspension joint dust cover severely deteriorated (13x). suspension joint dust cover missing or no longe... (11x) and light unit fault (7.8x) also appear frequently.
Over 100,000 miles
High-mileage cars accumulate failures across multiple systems. The key question isn't whether things will need doing — they will — but whether the car has been maintained well enough to keep on top of them. Look for a consistent service history and recent MOT passes with minimal advisories.
For the BMW 728 specifically, the DVSA data shows the most common failures at this mileage are brake hoses perished or damaged (89x the average) and fuel system leaking, or missing or ineffective ... (45x). free play in the steering, measured at the rim ... (15x) and track rod ends worn (11x) also appear frequently.
The shift from track rod ends worn at lower mileages to brake hoses perished or damaged at higher mileages is typical — early failures tend to be design or factory-related, while high-mileage failures reflect accumulated mechanical wear. A car that's been well maintained will usually dodge the worst of both.
What to check before buying a BMW 728
Based on the MOT failure data and known issues above, here's what to prioritise when inspecting a BMW 728:
Brakes — check for brake hoses perished or damaged, abs fault. Steering — check for track rod ends worn. Suspension — check for suspension joint dust cover severely deteriorated, suspension joint dust cover missing or no longe....
Always check the car's full MOT history for patterns — recurring advisories often become failures within 12 months. Enter any reg into our free car check to see the complete picture.
Looking at a specific BMW 728?
Enter the reg to see its full MOT history, mileage records, write-off status, and finance checks.
BMW 728 MOT FAQs
What are the most common MOT failures on a BMW 728?
Based on 11,745 DVSA MOT tests, the most common failure is brake hoses perished or damaged — at 486x the national fleet average. Other frequent failures include track rod ends worn and suspension joint dust cover severely deteriorated.
Is the BMW 728 reliable based on MOT data?
The BMW 728 has 13 categories where it fails more often than average. The main concern is brake hoses perished or damaged. Always check a specific car's full history before buying.
What MOT failures should I expect at high mileage?
Above 100,000 miles, the BMW 728 most commonly fails on brake hoses perished or damaged and fuel system leaking, or missing or ineffective .... Under 60,000 miles, the main issues are track rod ends worn and brake hoses perished or damaged.
How do I check a BMW 728's MOT history?
Enter the registration number into our free car check above. You'll see every MOT test result, advisories and failures, mileage readings, write-off status, and finance checks.
MOT failure data sourced from DVSA bulk test records via data.gov.uk. Ratios compare this model's failure rate against the national fleet average. Known issues sourced from manufacturer bulletins, specialist workshops, and verified owner reports.