BIKERELIABILITY
MOT DATA · GREAT BRITAIN · 2005–2025
League table/ SYM/JET 100
Model report · 2005–2025
71.8%
first-time pass rate
21.3%
failed outright
13,340
median miles at test
291
MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2006–2008

The JET 100's first-time pass rate has fallen 5.4 points since 2006, 71.3% to 65.9%.

65%69%73%2006: 71.3% pass (80 tests)2007: 66.7% pass (63 tests)2008: 65.9% pass (44 tests)20062008

Pass rate by mileage

how the JET 100's first-time pass rate falls with the odometer · class average 73.4%

A low-mileage JET 100 passes first time 81.3% of the time; by 20k that's 69.2%.

66%75%84%0k: 81.3% pass (91 tests)10k: 68.3% pass (126 tests)20k: 69.2% pass (52 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 JET 100

failure defects by component group · advisories excluded
Component group Share of defects Defects % of defects
lighting and signalling
57 36.8
brakes
44 28.4
tyres and wheels
16 10.3
steering and suspension
16 10.3
fuel and exhaust
13 8.4
reg plates and vin
4 2.6
body and structure
3 1.9
driving controls
1 0.6
tyres
1 0.6

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 JET 100 beats 0 of its 4 closest rivals (PIAGGIO VESPA, HONDA PCX 125, HONDA Vision 110).

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 JET 100.

Pass rate by registration year

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

Best year to buy used: 2000 (71.2% pass). Weakest: 2001 (69.8%).

69%71%72%2000: 71.2% pass (111 tests)2001: 69.8% pass (53 tests)20002001

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.