Triumph T509 Speed Triple Reliability, MOT Pass Rate & Common Faults
Free Triumph T509 Speed Triple car check
Is the Triumph T509 Speed Triple reliable? We analysed 2,373 real MOT tests across 221 vehicles to find out.
Got a specific Triumph T509 Speed Triple? Enter the reg for a free check:
The Triumph T509 Speed Triple is above average for reliability based on real UK MOT data. Common problems include tyre tread depth is below minimum requirements of 1.0mm, stop lamp does not illuminate immediately a brake applies and shock absorber seal failed and leaking oil. Here's everything you need to know before buying a used Triumph T509 Speed Triple.
Triumph T509 Speed Triple Number Plates
Number plates registered to a Triumph T509 Speed Triple. Click on any registration for full vehicle details — including MOT history, mileage records, previous owners and damage history.
Triumph T509 Speed Triple MOT Pass Rate by Year
How likely is a Triumph T509 Speed Triple to pass its MOT? Here's the pass rate for each registration year, newest first.
Triumph T509 Speed Triple Problems — What Goes Wrong?
The most common reasons a Triumph T509 Speed Triple fails its MOT, ranked by how often they occur. Check for these problems before you buy.
Triumph T509 Speed Triple Mileage — What's Normal?
How many miles does a typical Triumph T509 Speed Triple owner drive per year? Use this to check if a car you're looking at has suspiciously low or high mileage.
Triumph T509 Speed Triple MOT Data by Registration Year
Full breakdown of pass rate and mileage for each year. Use this to compare the Triumph T509 Speed Triple year you're looking at.
| Year | Tests | Pass Rate | Low Mi. | Typical Mi. | High Mi. |
|---|---|---|---|---|---|
| 1999 | 217 | 82.0% | 15,389 | 21,703 | 26,077 |
| 1998 | 937 | 82.9% | 16,280 | 22,528 | 33,236 |
| 1997 | 1,180 | 84.8% | 15,796 | 22,738 | 32,861 |
How Long Does a Triumph T509 Speed Triple Last?
Based on 221 Triumph T509 Speed Triple vehicles on UK roads.
Triumph T509 Speed Triple Mileage Distribution
Total mileage recorded across all Triumph T509 Speed Triple 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 T509 Speed Triple
Based on MOT pass rates across all registration years with sufficient test data.
84.8% MOT pass rate from 1,180 tests
82.0% MOT pass rate from 217 tests
The best year to buy a used Triumph T509 Speed Triple is 1997, which has the highest MOT pass rate at 84.8% across 1,180 tests. The 1999 model year has the lowest pass rate at 82.0% — if you're looking at one from that year, budget for potential repairs and get a thorough pre-purchase inspection.
How Does the Triumph T509 Speed Triple Compare?
MOT pass rates compared to similar models. Click any model for the full breakdown.
| Model | Pass Rate | Tests | Typical Mileage | Lifespan |
|---|---|---|---|---|
| Triumph T509 Speed Triple THIS CAR | 83.9% | 2,373 | 22,346 mi | 29 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 |
| Hyundai Amica Gsi | 76.3% | 1,531 | 59,910 mi | 26 yrs |
Compared to the Triumph Bonneville (90.1% pass rate) and the Triumph Tiger (90.6% pass rate), the Triumph T509 Speed Triple trails behind on MOT reliability.
Found a Triumph T509 Speed Triple 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 T509 Speed TripleShould you buy a used Triumph T509 Speed Triple?
The Triumph T509 Speed Triple has an overall MOT pass rate of 83.9% across 2,373 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 T509 Speed Triple are tyre tread depth is below minimum requirements of 1.0mm (39 recorded failures), stop lamp does not illuminate immediately a brake applies (24), and shock absorber seal failed and leaking oil (22). 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 T509 Speed Triple owner drives around 560 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 T509 Speed Triple models stay on UK roads for around 29 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.