Triumph Tr 7 Reliability, MOT Pass Rate & Common Faults
Free Triumph Tr 7 car check
Is the Triumph Tr 7 reliable? We analysed 26,315 real MOT tests across 3,030 vehicles to find out.
Got a specific Triumph Tr 7? Enter the reg for a free check:
The Triumph Tr 7 is about average for reliability based on real UK MOT data. Common problems include suspension component mounting prescribed area is excessively corroded, exhaust emissions carbon monoxide content excessive and parking brake: efficiency below requirements. Here's everything you need to know before buying a used Triumph Tr 7.
Triumph Tr 7 Number Plates
Number plates registered to a Triumph Tr 7. Click on any registration for full vehicle details — including MOT history, mileage records, previous owners and damage history.
Triumph Tr 7 MOT Pass Rate by Year
How likely is a Triumph Tr 7 to pass its MOT? Here's the pass rate for each registration year, newest first.
Triumph Tr 7 Problems — What Goes Wrong?
The most common reasons a Triumph Tr 7 fails its MOT, ranked by how often they occur. Check for these problems before you buy.
Triumph Tr 7 Mileage — What's Normal?
How many miles does a typical Triumph Tr 7 owner drive per year? Use this to check if a car you're looking at has suspiciously low or high mileage.
Triumph Tr 7 MOT Data by Registration Year
Full breakdown of pass rate and mileage for each year. Use this to compare the Triumph Tr 7 year you're looking at.
| Year | Tests | Pass Rate | Low Mi. | Typical Mi. | High Mi. |
|---|---|---|---|---|---|
| 1991 | 66 | 77.3% | 42,580 | 49,840 | 60,133 |
| 1983 | 89 | 78.7% | 30,401 | 56,776 | 66,709 |
| 1982 | 5,121 | 71.5% | 33,260 | 58,886 | 79,042 |
| 1981 | 8,723 | 73.4% | 32,467 | 60,266 | 79,063 |
| 1980 | 8,015 | 70.9% | 24,522 | 57,693 | 78,024 |
| 1979 | 619 | 74.6% | 19,630 | 43,576 | 72,336 |
| 1978 | 582 | 73.0% | 22,378 | 54,578 | 71,488 |
| 1977 | 1,609 | 74.5% | 25,682 | 52,281 | 74,480 |
| 1976 | 537 | 71.3% | 44,114 | 62,721 | 71,996 |
| 1975 | 67 | 74.6% | 55,384 | 77,585 | 81,812 |
| 1974 | 80 | 80.0% | 49,368 | 74,575 | 79,284 |
| 1973 | 66 | 72.7% | 13,802 | 20,052 | 82,702 |
| 1972 | 118 | 80.5% | 14,022 | 73,375 | 85,872 |
| 1971 | 97 | 71.1% | 8,242 | 12,620 | 61,012 |
How Long Does a Triumph Tr 7 Last?
Based on 3,030 Triumph Tr 7 vehicles on UK roads.
Triumph Tr 7 Mileage Distribution
Total mileage recorded across all Triumph Tr 7 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 Tr 7
Based on MOT pass rates across all registration years with sufficient test data.
80.5% MOT pass rate from 118 tests
70.9% MOT pass rate from 8,015 tests
The best year to buy a used Triumph Tr 7 is 1972, which has the highest MOT pass rate at 80.5% across 118 tests. The 1980 model year has the lowest pass rate at 70.9% — if you're looking at one from that year, budget for potential repairs and get a thorough pre-purchase inspection.
How Does the Triumph Tr 7 Compare?
MOT pass rates compared to similar models. Click any model for the full breakdown.
| Model | Pass Rate | Tests | Typical Mileage | Lifespan |
|---|---|---|---|---|
| Triumph Tr 7 THIS CAR | 72.5% | 26,315 | 58,298 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 |
| Mazda Xedos 6 | 64.5% | 17,923 | 97,488 mi | 34 yrs |
Compared to the Triumph Bonneville (90.1% pass rate) and the Triumph Tiger (90.6% pass rate), the Triumph Tr 7 trails behind on MOT reliability.
Found a Triumph Tr 7 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 Tr 7Should you buy a used Triumph Tr 7?
The Triumph Tr 7 has an overall MOT pass rate of 72.5% across 26,315 real MOT tests — roughly in line with the UK average.
The most common problems on the Triumph Tr 7 are suspension component mounting prescribed area is excessively corroded (1,278 recorded failures), exhaust emissions carbon monoxide content excessive (1,128), and parking brake: efficiency below requirements (1,118). 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 Tr 7 owner drives around 431 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 Tr 7 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.