Triumph 2.5 Pi Reliability, MOT Pass Rate & Common Faults
Free Triumph 2.5 Pi car check
Is the Triumph 2.5 Pi reliable? We analysed 1,524 real MOT tests across 195 vehicles to find out.
Got a specific Triumph 2.5 Pi? Enter the reg for a free check:
The Triumph 2.5 Pi is above average for reliability based on real UK MOT data. Common problems include parking brake: efficiency below requirements, suspension component mounting prescribed area is excessively corroded and windscreen washer provides insufficient washer liquid. Here's everything you need to know before buying a used Triumph 2.5 Pi.
Triumph 2.5 Pi Number Plates
Number plates registered to a Triumph 2.5 Pi. Click on any registration for full vehicle details — including MOT history, mileage records, previous owners and damage history.
Triumph 2.5 Pi MOT Pass Rate by Year
How likely is a Triumph 2.5 Pi to pass its MOT? Here's the pass rate for each registration year, newest first.
Triumph 2.5 Pi Problems — What Goes Wrong?
The most common reasons a Triumph 2.5 Pi fails its MOT, ranked by how often they occur. Check for these problems before you buy.
Triumph 2.5 Pi Mileage — What's Normal?
How many miles does a typical Triumph 2.5 Pi owner drive per year? Use this to check if a car you're looking at has suspiciously low or high mileage.
Triumph 2.5 Pi MOT Data by Registration Year
Full breakdown of pass rate and mileage for each year. Use this to compare the Triumph 2.5 Pi year you're looking at.
| Year | Tests | Pass Rate | Low Mi. | Typical Mi. | High Mi. |
|---|---|---|---|---|---|
| 1974 | 119 | 76.5% | 36,599 | 51,218 | 65,722 |
| 1973 | 325 | 79.7% | 36,178 | 67,168 | 81,762 |
| 1972 | 333 | 82.3% | 40,101 | 56,997 | 73,875 |
| 1971 | 290 | 82.1% | 43,874 | 60,195 | 75,706 |
| 1970 | 176 | 79.0% | 35,125 | 61,733 | 84,492 |
| 1969 | 219 | 80.8% | 20,867 | 42,446 | 68,871 |
How Long Does a Triumph 2.5 Pi Last?
Based on 195 Triumph 2.5 Pi vehicles on UK roads.
Triumph 2.5 Pi Mileage Distribution
Total mileage recorded across all Triumph 2.5 Pi 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 2.5 Pi
Based on MOT pass rates across all registration years with sufficient test data.
82.3% MOT pass rate from 333 tests
76.5% MOT pass rate from 119 tests
The best year to buy a used Triumph 2.5 Pi is 1972, which has the highest MOT pass rate at 82.3% across 333 tests. The 1974 model year has the lowest pass rate at 76.5% — if you're looking at one from that year, budget for potential repairs and get a thorough pre-purchase inspection.
How Does the Triumph 2.5 Pi Compare?
MOT pass rates compared to similar models. Click any model for the full breakdown.
| Model | Pass Rate | Tests | Typical Mileage | Lifespan |
|---|---|---|---|---|
| Triumph 2.5 Pi THIS CAR | 80.9% | 1,524 | 56,568 mi | 57 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 |
| Iveco Tipper | 65.3% | 1,841 | 99,939 mi | 29 yrs |
Compared to the Triumph Bonneville (90.1% pass rate) and the Triumph Tiger (90.6% pass rate), the Triumph 2.5 Pi trails behind on MOT reliability.
Found a Triumph 2.5 Pi 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 2.5 PiShould you buy a used Triumph 2.5 Pi?
The Triumph 2.5 Pi has an overall MOT pass rate of 80.9% across 1,524 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 2.5 Pi are parking brake: efficiency below requirements (58 recorded failures), suspension component mounting prescribed area is excessively corroded (54), and windscreen washer provides insufficient washer liquid (31). 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 2.5 Pi owner drives around 776 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 2.5 Pi models stay on UK roads for around 57 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.