BIKERELIABILITY
MOT DATA · GREAT BRITAIN · 2005–2025
Model report · 2005–2025

TRIUMPH T140D

744cc Petrol Class 2
82.4%
first-time pass rate
11.4%
failed outright
19,222
median miles at test
290
MOT tests, 2005–2025

Pass rate by mileage

how the T140D's first-time pass rate falls with the odometer · class average 84.9%

A low-mileage T140D passes first time 81.7% of the time; by 20k that's 82.4%.

81%84%87%0k: 81.7% pass (82 tests)10k: 86.3% pass (73 tests)20k: 82.4% pass (108 tests)0k10k20k

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 T140D

failure defects by component group · advisories excluded
Component group Share of defects Defects % of defects
lighting and signalling
39 40.6
brakes
22 22.9
steering and suspension
16 16.7
tyres and wheels
6 6.2
lamps and reflectors
5 5.2
body and structure
2 2.1
fuel and exhaust
2 2.1
drive system
2 2.1
reg plates and vin
1 1
driving controls
1 1

Defects recorded against failed normal tests, 2005–2025, grouped by DVSA inspection section. One test can record multiple defects.

How rivals compare

same type, similar capacity, high test volume

On first-time pass rate the T140D beats 2 of its 4 closest rivals (KAWASAKI ZX-6R, SUZUKI GSF600, YAMAHA FZS600).

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 T140D.

Pass rate by registration year

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

Best year to buy used: 1980 (82.7% pass). Weakest: 1979 (82.5%).

82%83%84%1979: 82.5% pass (120 tests)1980: 82.7% pass (98 tests)19791980

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.