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

YAMAHA TT500

499cc Petrol Class 2
82.7%
first-time pass rate
8.8%
failed outright
1,524
median miles at test
365
MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2014–2017

The TT500's first-time pass rate has held steady since 2014 (81.1% → 81.4%).

71%84%96%2014: 81.1% pass (37 tests)2015: 75.0% pass (40 tests)2016: 92.1% pass (38 tests)2017: 81.4% pass (43 tests)20142017

What fails on a TT500

failure defects by component group · advisories excluded
Component group Share of defects Defects % of defects
lighting and signalling
37 42.5
steering and suspension
14 16.1
brakes
13 14.9
tyres and wheels
10 11.5
reg plates and vin
5 5.7
fuel and exhaust
4 4.6
lamps and reflectors
1 1.1
drive system
1 1.1
structure and attachments
1 1.1
body and structure
1 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 TT500 beats 4 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 TT500.

Pass rate by registration year

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

Best year to buy used: 1979 (88.9% pass). Weakest: 1978 (79.2%).

77%84%91%1977: 88.0% pass (75 tests)1978: 79.2% pass (77 tests)1979: 88.9% pass (63 tests)197719781979

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.