Triumph Bonneville Bobber Reliability, MOT Pass Rate & Common Faults
Free Triumph Bonneville Bobber car check
Is the Triumph Bonneville Bobber reliable? We analysed 1,154 real MOT tests across 608 vehicles to find out.
Got a specific Triumph Bonneville Bobber? Enter the reg for a free check:
The Triumph Bonneville Bobber is above average for reliability based on real UK MOT data. Here's everything you need to know before buying a used Triumph Bonneville Bobber.
Triumph Bonneville Bobber Number Plates
Number plates registered to a Triumph Bonneville Bobber. Click on any registration for full vehicle details — including MOT history, mileage records, previous owners and damage history.
Triumph Bonneville Bobber MOT Pass Rate by Year
How likely is a Triumph Bonneville Bobber to pass its MOT? Here's the pass rate for each registration year, newest first.
Triumph Bonneville Bobber Common Faults & Problems
These are the most common serious faults found on Triumph Bonneville Bobber models during MOT testing — flagged as dangerous or major failures that need immediate attention.
Triumph Bonneville Bobber Mileage — What's Normal?
How many miles does a typical Triumph Bonneville Bobber owner drive per year? Use this to check if a car you're looking at has suspiciously low or high mileage.
Triumph Bonneville Bobber MOT Data by Registration Year
Full breakdown of pass rate and mileage for each year. Use this to compare the Triumph Bonneville Bobber year you're looking at.
| Year | Tests | Pass Rate | Low Mi. | Typical Mi. | High Mi. |
|---|---|---|---|---|---|
| 2022 | 403 | 88.1% | 1,720 | 2,833 | 4,872 |
| 2021 | 428 | 91.4% | 1,954 | 3,496 | 5,558 |
| 2017 | 125 | 94.4% | 2,471 | 3,782 | 5,016 |
| 2016 | 71 | 87.3% | 3,799 | 6,857 | 9,112 |
How Long Does a Triumph Bonneville Bobber Last?
Based on 608 Triumph Bonneville Bobber vehicles on UK roads.
Triumph Bonneville Bobber Mileage Distribution
Total mileage recorded across all Triumph Bonneville Bobber 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 Bonneville Bobber
Based on MOT pass rates across all registration years with sufficient test data.
94.4% MOT pass rate from 125 tests
87.3% MOT pass rate from 71 tests
The best year to buy a used Triumph Bonneville Bobber is 2017, which has the highest MOT pass rate at 94.4% across 125 tests. The 2016 model year has the lowest pass rate at 87.3% — if you're looking at one from that year, budget for potential repairs and get a thorough pre-purchase inspection.
How Does the Triumph Bonneville Bobber Compare?
MOT pass rates compared to similar models. Click any model for the full breakdown.
| Model | Pass Rate | Tests | Typical Mileage | Lifespan |
|---|---|---|---|---|
| Triumph Bonneville Bobber THIS CAR | 90.6% | 1,154 | 3,449 mi | 10 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 |
| Ajs Dd 125 E-5 | 75.8% | 1,192 | 4,491 mi | 19 yrs |
Compared to the Triumph Bonneville (90.1% pass rate) and the Triumph Tiger (90.6% pass rate), the Triumph Bonneville Bobber sits in the middle of the pack on MOT reliability.
Found a Triumph Bonneville Bobber 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 Bonneville BobberShould you buy a used Triumph Bonneville Bobber?
The Triumph Bonneville Bobber has an overall MOT pass rate of 90.6% across 1,154 real MOT tests — comfortably above the UK average, which puts it among the more reliable models on UK roads.
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 Bonneville Bobber 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 Bonneville Bobber owner drives around 585 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 Bonneville Bobber models stay on UK roads for around 10 years. If you're buying one that's already well within 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.