Triumph Rocket III Reliability, MOT Pass Rate & Common Faults
Free Triumph Rocket III car check
Is the Triumph Rocket III reliable? We analysed 18,685 real MOT tests across 1,561 vehicles to find out.
Got a specific Triumph Rocket III? Enter the reg for a free check:
The Triumph Rocket III is above average for reliability based on real UK MOT data. Common problems include tyre tread depth is below minimum requirements of 1.0mm, brake pad(s) less than 1.5 mm thick and reflector on motorcycle missing. Here's everything you need to know before buying a used Triumph Rocket III.
Triumph Rocket III Number Plates
Number plates registered to a Triumph Rocket III. Click on any registration for full vehicle details — including MOT history, mileage records, previous owners and damage history.
Triumph Rocket III MOT Pass Rate by Year
How likely is a Triumph Rocket III to pass its MOT? Here's the pass rate for each registration year, newest first.
Triumph Rocket III Problems — What Goes Wrong?
The most common reasons a Triumph Rocket III fails its MOT, ranked by how often they occur. Check for these problems before you buy.
Triumph Rocket III Common Faults & Problems
These are the most common serious faults found on Triumph Rocket III models during MOT testing — flagged as dangerous or major failures that need immediate attention.
Triumph Rocket III Mileage — What's Normal?
How many miles does a typical Triumph Rocket III owner drive per year? Use this to check if a car you're looking at has suspiciously low or high mileage.
Triumph Rocket III MOT Data by Registration Year
Full breakdown of pass rate and mileage for each year. Use this to compare the Triumph Rocket III year you're looking at.
| Year | Tests | Pass Rate | Low Mi. | Typical Mi. | High Mi. |
|---|---|---|---|---|---|
| 2012 | 332 | 88.6% | 6,646 | 11,452 | 16,322 |
| 2011 | 1,211 | 91.7% | 7,163 | 12,654 | 19,875 |
| 2010 | 2,089 | 91.0% | 7,435 | 12,393 | 19,166 |
| 2009 | 1,817 | 89.9% | 7,188 | 12,362 | 19,100 |
| 2008 | 1,727 | 89.5% | 7,000 | 12,843 | 20,218 |
| 2007 | 2,222 | 89.3% | 7,863 | 13,816 | 23,124 |
| 2006 | 2,641 | 89.2% | 7,976 | 13,741 | 21,284 |
| 2005 | 2,960 | 89.6% | 8,220 | 14,623 | 23,496 |
| 2004 | 3,398 | 88.5% | 8,366 | 15,262 | 24,814 |
How Long Does a Triumph Rocket III Last?
Based on 1,561 Triumph Rocket III vehicles on UK roads.
Triumph Rocket III Mileage Distribution
Total mileage recorded across all Triumph Rocket III 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 Rocket III
Based on MOT pass rates across all registration years with sufficient test data.
91.7% MOT pass rate from 1,211 tests
88.5% MOT pass rate from 3,398 tests
The best year to buy a used Triumph Rocket III is 2011, which has the highest MOT pass rate at 91.7% across 1,211 tests. The 2004 model year has the lowest pass rate at 88.5% — if you're looking at one from that year, budget for potential repairs and get a thorough pre-purchase inspection.
How Does the Triumph Rocket III Compare?
MOT pass rates compared to similar models. Click any model for the full breakdown.
| Model | Pass Rate | Tests | Typical Mileage | Lifespan |
|---|---|---|---|---|
| Triumph Rocket III THIS CAR | 89.6% | 18,685 | 13,537 mi | 22 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 |
| Subaru Impreza Sport AWD | 69.3% | 6,646 | 103,014 mi | 30 yrs |
Compared to the Triumph Bonneville (90.1% pass rate) and the Triumph Tiger (90.6% pass rate), the Triumph Rocket III trails behind on MOT reliability.
Found a Triumph Rocket III 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 Rocket IIIShould you buy a used Triumph Rocket III?
The Triumph Rocket III has an overall MOT pass rate of 89.6% across 18,685 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 Rocket III are tyre tread depth is below minimum requirements of 1.0mm (231 recorded failures), brake pad(s) less than 1.5 mm thick (76), and reflector on motorcycle missing (73). 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.
On the safety side, the most frequently flagged dangerous fault is tyre tread depth is below minimum requirements of 1.0mm. Dangerous faults cause an immediate MOT failure and mean the vehicle is not roadworthy until repaired. If you're viewing a Triumph Rocket III with an expired or recently passed MOT, ask the seller whether any dangerous faults were found and fixed during the last test.
A typical Triumph Rocket III owner drives around 831 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 Rocket III models stay on UK roads for around 22 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.