Triumph 6T Reliability, MOT Pass Rate & Common Faults
Free Triumph 6T car check
Is the Triumph 6T reliable? We analysed 1,160 real MOT tests across 222 vehicles to find out.
Got a specific Triumph 6T? Enter the reg for a free check:
The Triumph 6T is above average for reliability based on real UK MOT data. Common problems include stop lamp does not illuminate immediately a brake applies, steering headbearing has excessive free play and position lamp does not illuminate immediately when it is switched on. Here's everything you need to know before buying a used Triumph 6T.
Triumph 6T Number Plates
Number plates registered to a Triumph 6T. Click on any registration for full vehicle details — including MOT history, mileage records, previous owners and damage history.
Triumph 6T MOT Pass Rate by Year
How likely is a Triumph 6T to pass its MOT? Here's the pass rate for each registration year, newest first.
Triumph 6T Problems — What Goes Wrong?
The most common reasons a Triumph 6T fails its MOT, ranked by how often they occur. Check for these problems before you buy.
Triumph 6T Mileage — What's Normal?
How many miles does a typical Triumph 6T owner drive per year? Use this to check if a car you're looking at has suspiciously low or high mileage.
Triumph 6T MOT Data by Registration Year
Full breakdown of pass rate and mileage for each year. Use this to compare the Triumph 6T year you're looking at.
| Year | Tests | Pass Rate | Low Mi. | Typical Mi. | High Mi. |
|---|---|---|---|---|---|
| 1966 | 114 | 86.8% | 3,286 | 17,010 | 48,539 |
| 1965 | 88 | 92.0% | 4,289 | 10,445 | 26,969 |
| 1964 | 63 | 95.2% | 9,219 | 11,250 | 17,706 |
| 1962 | 50 | 92.0% | 7,090 | 27,581 | 52,846 |
| 1961 | 70 | 97.1% | 4,696 | 9,007 | 46,933 |
| 1960 | 104 | 93.3% | 2,875 | 23,003 | 44,668 |
| 1959 | 74 | 93.2% | 1,956 | 8,714 | 37,393 |
| 1958 | 53 | 96.2% | 1,629 | 24,339 | 51,021 |
How Long Does a Triumph 6T Last?
Based on 222 Triumph 6T vehicles on UK roads.
Triumph 6T Mileage Distribution
Total mileage recorded across all Triumph 6T 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 6T
Based on MOT pass rates across all registration years with sufficient test data.
97.1% MOT pass rate from 70 tests
86.8% MOT pass rate from 114 tests
The best year to buy a used Triumph 6T is 1961, which has the highest MOT pass rate at 97.1% across 70 tests. The 1966 model year has the lowest pass rate at 86.8% — if you're looking at one from that year, budget for potential repairs and get a thorough pre-purchase inspection.
How Does the Triumph 6T Compare?
MOT pass rates compared to similar models. Click any model for the full breakdown.
| Model | Pass Rate | Tests | Typical Mileage | Lifespan |
|---|---|---|---|---|
| Triumph 6T THIS CAR | 92.2% | 1,160 | 11,041 mi | 68 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 |
| Volvo XC60 Rdesign Pro B5 MHEV AWD A | 89.8% | 2,215 | 34,692 mi | — yrs |
Compared to the Triumph Bonneville (90.1% pass rate) and the Triumph Tiger (90.6% pass rate), the Triumph 6T outperforms both on MOT reliability.
Found a Triumph 6T 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 6TShould you buy a used Triumph 6T?
The Triumph 6T has an overall MOT pass rate of 92.2% across 1,160 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 6T are stop lamp does not illuminate immediately a brake applies (6 recorded failures), steering headbearing has excessive free play (6), and position lamp does not illuminate immediately when it is switched on (4). 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 6T owner drives around 170 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 6T models stay on UK roads for around 68 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.