Triumph TR7 Reliability, MOT Pass Rate & Common Faults
Free Triumph TR7 car check
Is the Triumph TR7 reliable? We analysed 1,610 real MOT tests across 328 vehicles to find out.
Got a specific Triumph TR7? Enter the reg for a free check:
The Triumph TR7 is above average for reliability based on real UK MOT data. Common problems include suspension component mounting prescribed area is excessively corroded, parking brake: efficiency below requirements and exhaust emissions carbon monoxide content excessive. Here's everything you need to know before buying a used Triumph TR7.
Triumph TR7 Number Plates
Number plates registered to a Triumph TR7. Click on any registration for full vehicle details — including MOT history, mileage records, previous owners and damage history.
Triumph TR7 MOT Pass Rate by Year
How likely is a Triumph TR7 to pass its MOT? Here's the pass rate for each registration year, newest first.
Triumph TR7 Problems — What Goes Wrong?
The most common reasons a Triumph TR7 fails its MOT, ranked by how often they occur. Check for these problems before you buy.
Triumph TR7 Mileage — What's Normal?
How many miles does a typical Triumph TR7 owner drive per year? Use this to check if a car you're looking at has suspiciously low or high mileage.
Triumph TR7 MOT Data by Registration Year
Full breakdown of pass rate and mileage for each year. Use this to compare the Triumph TR7 year you're looking at.
| Year | Tests | Pass Rate | Low Mi. | Typical Mi. | High Mi. |
|---|---|---|---|---|---|
| 1982 | 159 | 70.4% | 18,122 | 54,777 | 85,084 |
| 1981 | 182 | 69.8% | 19,785 | 50,389 | 69,245 |
| 1980 | 130 | 70.8% | 23,394 | 47,418 | 72,884 |
| 1979 | 131 | 82.4% | 8,695 | 46,778 | 73,325 |
| 1978 | 181 | 81.8% | 10,384 | 37,749 | 61,286 |
| 1977 | 299 | 76.9% | 20,022 | 51,267 | 76,005 |
| 1976 | 195 | 81.0% | 10,711 | 38,465 | 62,073 |
How Long Does a Triumph TR7 Last?
Based on 328 Triumph TR7 vehicles on UK roads.
Triumph TR7 Mileage Distribution
Total mileage recorded across all Triumph TR7 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 Triumph TR7
Based on MOT pass rates across all registration years with sufficient test data.
82.4% MOT pass rate from 131 tests
69.8% MOT pass rate from 182 tests
The best year to buy a used Triumph TR7 is 1979, which has the highest MOT pass rate at 82.4% across 131 tests. The 1981 model year has the lowest pass rate at 69.8% — if you're looking at one from that year, budget for potential repairs and get a thorough pre-purchase inspection.
How Does the Triumph TR7 Compare?
MOT pass rates compared to similar models. Click any model for the full breakdown.
| Model | Pass Rate | Tests | Typical Mileage | Lifespan |
|---|---|---|---|---|
| Triumph TR7 THIS CAR | 77.8% | 1,610 | 37,191 mi | 50 yrs |
| Triumph Bonneville | 90.1% | 235,206 | 7,823 mi | 53 yrs |
| Triumph Tiger | 90.6% | 196,853 | 17,026 mi | 32 yrs |
| Triumph Sprint | 87.3% | 158,613 | 21,242 mi | 33 yrs |
| Harley-davidson FXD35 | 92% | 1,382 | 9,324 mi | 21 yrs |
Compared to the Triumph Bonneville (90.1% pass rate) and the Triumph Tiger (90.6% pass rate), the Triumph TR7 trails behind on MOT reliability.
Found a Triumph TR7 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 Triumph TR7Should you buy a used Triumph TR7?
The Triumph TR7 has an overall MOT pass rate of 77.8% across 1,610 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 Triumph TR7 are suspension component mounting prescribed area is excessively corroded (88 recorded failures), parking brake: efficiency below requirements (58), and exhaust emissions carbon monoxide content excessive (48). 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 Triumph TR7 owner drives around 353 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 Triumph TR7 models stay on UK roads for around 50 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.