Triumph GT6 Reliability, MOT Pass Rate & Common Faults
Free Triumph GT6 car check
Is the Triumph GT6 reliable? We analysed 14,984 real MOT tests across 1,835 vehicles to find out.
Got a specific Triumph GT6? Enter the reg for a free check:
The Triumph GT6 is above average for reliability based on real UK MOT data. Common problems include parking brake: efficiency below requirements, brake binding and suspension component mounting prescribed area is excessively corroded. Here's everything you need to know before buying a used Triumph GT6.
Triumph GT6 Number Plates
Number plates registered to a Triumph GT6. Click on any registration for full vehicle details — including MOT history, mileage records, previous owners and damage history.
Triumph GT6 MOT Pass Rate by Year
How likely is a Triumph GT6 to pass its MOT? Here's the pass rate for each registration year, newest first.
Triumph GT6 Problems — What Goes Wrong?
The most common reasons a Triumph GT6 fails its MOT, ranked by how often they occur. Check for these problems before you buy.
Triumph GT6 Mileage — What's Normal?
How many miles does a typical Triumph GT6 owner drive per year? Use this to check if a car you're looking at has suspiciously low or high mileage.
Triumph GT6 MOT Data by Registration Year
Full breakdown of pass rate and mileage for each year. Use this to compare the Triumph GT6 year you're looking at.
| Year | Tests | Pass Rate | Low Mi. | Typical Mi. | High Mi. |
|---|---|---|---|---|---|
| 1974 | 1,306 | 76.1% | 22,141 | 55,409 | 83,737 |
| 1973 | 3,981 | 75.8% | 15,645 | 38,610 | 75,711 |
| 1972 | 2,813 | 75.5% | 17,752 | 44,452 | 78,934 |
| 1971 | 2,516 | 76.0% | 16,915 | 43,140 | 79,946 |
| 1970 | 1,215 | 77.4% | 11,657 | 37,804 | 69,451 |
| 1969 | 1,076 | 79.4% | 25,616 | 45,850 | 72,610 |
| 1968 | 694 | 75.9% | 17,483 | 34,280 | 52,794 |
| 1967 | 1,011 | 76.8% | 20,527 | 42,532 | 67,893 |
How Long Does a Triumph GT6 Last?
Based on 1,835 Triumph GT6 vehicles on UK roads.
Triumph GT6 Mileage Distribution
Total mileage recorded across all Triumph GT6 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 GT6
Based on MOT pass rates across all registration years with sufficient test data.
79.4% MOT pass rate from 1,076 tests
75.5% MOT pass rate from 2,813 tests
The best year to buy a used Triumph GT6 is 1969, which has the highest MOT pass rate at 79.4% across 1,076 tests. The 1972 model year has the lowest pass rate at 75.5% — if you're looking at one from that year, budget for potential repairs and get a thorough pre-purchase inspection.
How Does the Triumph GT6 Compare?
MOT pass rates compared to similar models. Click any model for the full breakdown.
| Model | Pass Rate | Tests | Typical Mileage | Lifespan |
|---|---|---|---|---|
| Triumph GT6 THIS CAR | 76.4% | 14,984 | 42,516 mi | 59 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 |
| Bsa A10 | 92.2% | 10,105 | 12,338 mi | 74 yrs |
Compared to the Triumph Bonneville (90.1% pass rate) and the Triumph Tiger (90.6% pass rate), the Triumph GT6 trails behind on MOT reliability.
Found a Triumph GT6 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 GT6Should you buy a used Triumph GT6?
The Triumph GT6 has an overall MOT pass rate of 76.4% across 14,984 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 GT6 are parking brake: efficiency below requirements (774 recorded failures), brake binding (398), and suspension component mounting prescribed area is excessively corroded (393). 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 GT6 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 GT6 models stay on UK roads for around 59 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.