BIKERELIABILITY
MOT DATA · GREAT BRITAIN · 2005–2025
League table/ TRIUMPH/BONNEVILLE 750
Model report · 2005–2025

TRIUMPH BONNEVILLE 750

744cc Petrol Class 2
85.2%
first-time pass rate
6.5%
failed outright
17,194
median miles at test
630
MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2006–2017

The BONNEVILLE 750's first-time pass rate has risen 8.2 points since 2006, 82.7% to 90.9%.

73%84%94%2006: 82.7% pass (52 tests)2007: 90.5% pass (42 tests)2008: 85.4% pass (41 tests)2009: 85.1% pass (47 tests)2010: 76.9% pass (39 tests)2011: 86.7% pass (45 tests)2012: 85.7% pass (42 tests)2013: 80.4% pass (46 tests)2014: 83.6% pass (55 tests)2015: 81.5% pass (54 tests)2016: 87.8% pass (49 tests)2017: 90.9% pass (44 tests)20062017

Pass rate by mileage

how the BONNEVILLE 750's first-time pass rate falls with the odometer · class average 84.9%

A low-mileage BONNEVILLE 750 passes first time 82.9% of the time; by 40k that's 90.0%.

81%87%92%0k: 82.9% pass (193 tests)10k: 84.2% pass (165 tests)20k: 84.8% pass (132 tests)30k: 90.6% pass (53 tests)40k: 90.0% pass (50 tests)0k20k40k

First-time pass rate by odometer reading at test, 10,000-mile bands for this model. Mileage is the strongest reliability signal. See the full curve.

What fails on a BONNEVILLE 750

failure defects by component group · advisories excluded
Component group Share of defects Defects % of defects vs all bikes
lighting and signalling
29 35.4 0.8×
steering and suspension
19 23.2 0.7×
brakes
18 22 0.6×
tyres and wheels
4 4.9 0.3×
driving controls
4 4.9 2.7×
lamps and reflectors
2 2.4 0.2×
drive system
2 2.4 0.4×
fuel and exhaust
2 2.4 0.4×
suspension
1 1.2 0.2×
body and structure
1 1.2 0.3×

Defects recorded against failed normal tests, 2005–2025, grouped by DVSA inspection section. One test can record multiple defects. "vs all bikes" is how often this model's tests record a defect in the group, as a multiple of the all-bike rate.

How rivals compare

same type, similar capacity, high test volume

On first-time pass rate the BONNEVILLE 750 beats 0 of its 4 closest rivals (TRIUMPH BONNEVILLE, TRIUMPH THUNDERBIRD, HARLEY-DAVIDSON XLH 883).

Rivals share this bike's type and sit within ±30% of its engine capacity, ≥ 5,000 tests. Card colour = better/worse first-time pass rate than the BONNEVILLE 750.

Pass rate by registration year

how each model-year cohort fares · registration year from first use date

Best year to buy used: 1975 (96.4% pass). Weakest: 1976 (73.2%).

69%84%100%1975: 96.4% pass (56 tests)1976: 73.2% pass (56 tests)1977: 81.3% pass (96 tests)1978: 83.6% pass (122 tests)1979: 89.3% pass (103 tests)1980: 77.8% pass (72 tests)197519781980

First-time pass rate by the year each bike was first registered (cohorts with ≥ 50 tests). Older cohorts are survivors: the worst examples have already left the road, which tends to lift the earliest years.

TRIUMPH BONNEVILLE 750 FAQ

answers computed from the data above · terms in the glossary

Is the TRIUMPH BONNEVILLE 750 reliable?

The TRIUMPH BONNEVILLE 750 is about average for its class: 85.2% of its 630 MOT tests (2005–2025) passed first time, against a class average of 84.9%. That ranks it #2443 of 5426 models.

What does a BONNEVILLE 750 fail its MOT on most?

lighting and signalling — 35% of all defects recorded against failed BONNEVILLE 750 tests.

What is the best year of BONNEVILLE 750 to buy used?

By first-time pass rate, 1975-registered examples do best (96.4%) and 1976 worst (73.2%). Condition and history still trump the year.

How many miles will a BONNEVILLE 750 last?

The median BONNEVILLE 750 shows 17,194 miles at test, and examples around 40k miles still pass 90.0% of the time — mileage alone rarely kills one.