Triumph T100R Reliability, MOT Pass Rate & Common Faults
Free Triumph T100R car check
Is the Triumph T100R reliable? We analysed 634 real MOT tests across 125 vehicles to find out.
Got a specific Triumph T100R? Enter the reg for a free check:
The Triumph T100R is above average for reliability based on real UK MOT data. Common problems include steering headbearing has excessive free play, shock absorber seal failed and leaking oil and headlamp aim too high. Here's everything you need to know before buying a used Triumph T100R.
Triumph T100R Number Plates
Number plates registered to a Triumph T100R. Click on any registration for full vehicle details — including MOT history, mileage records, previous owners and damage history.
Triumph T100R MOT Pass Rate by Year
How likely is a Triumph T100R to pass its MOT? Here's the pass rate for each registration year, newest first.
Triumph T100R Problems — What Goes Wrong?
The most common reasons a Triumph T100R fails its MOT, ranked by how often they occur. Check for these problems before you buy.
Triumph T100R Mileage — What's Normal?
How many miles does a typical Triumph T100R owner drive per year? Use this to check if a car you're looking at has suspiciously low or high mileage.
Triumph T100R MOT Data by Registration Year
Full breakdown of pass rate and mileage for each year. Use this to compare the Triumph T100R year you're looking at.
| Year | Tests | Pass Rate | Low Mi. | Typical Mi. | High Mi. |
|---|---|---|---|---|---|
| 1973 | 91 | 93.4% | 4,450 | 6,820 | 41,388 |
| 1972 | 92 | 95.7% | 6,240 | 8,199 | 15,802 |
How Long Does a Triumph T100R Last?
Based on 125 Triumph T100R vehicles on UK roads.
Triumph T100R Mileage Distribution
Total mileage recorded across all Triumph T100R 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 T100R
Based on MOT pass rates across all registration years with sufficient test data.
95.7% MOT pass rate from 92 tests
93.4% MOT pass rate from 91 tests
The best year to buy a used Triumph T100R is 1972, which has the highest MOT pass rate at 95.7% across 92 tests. The 1973 model year has the lowest pass rate at 93.4% — if you're looking at one from that year, budget for potential repairs and get a thorough pre-purchase inspection.
How Does the Triumph T100R Compare?
MOT pass rates compared to similar models. Click any model for the full breakdown.
| Model | Pass Rate | Tests | Typical Mileage | Lifespan |
|---|---|---|---|---|
| Triumph T100R THIS CAR | 92.3% | 634 | 8,988 mi | 54 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 |
| Seat Ibiza S Ac Cr TDI | 82.8% | 650 | 81,356 mi | — yrs |
Compared to the Triumph Bonneville (90.1% pass rate) and the Triumph Tiger (90.6% pass rate), the Triumph T100R outperforms both on MOT reliability.
Found a Triumph T100R 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 T100RShould you buy a used Triumph T100R?
The Triumph T100R has an overall MOT pass rate of 92.3% across 634 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 T100R are steering headbearing has excessive free play (3 recorded failures), shock absorber seal failed and leaking oil (3), and headlamp aim too high (2). 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 T100R owner drives around 169 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 T100R models stay on UK roads for around 54 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.