BIKERELIABILITY
MOT DATA · GREAT BRITAIN · 2005–2025
Model report · 2005–2025
92.7%
first-time pass rate
3.1%
failed outright
19,416
median miles at test
287
MOT tests, 2005–2025

Pass rate by mileage

how the SS180's first-time pass rate falls with the odometer · class average 73.4%

A low-mileage SS180 passes first time 90.6% of the time; by 30k that's 90.0%.

88%94%100%0k: 90.6% pass (106 tests)10k: 92.7% pass (41 tests)20k: 98.1% pass (54 tests)30k: 90.0% pass (30 tests)0k20k30k

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 SS180

failure defects by component group · advisories excluded
Component group Share of defects Defects % of defects
lighting and signalling
5 38.5
steering and suspension
3 23.1
brakes
2 15.4
tyres and wheels
2 15.4
steering and suspension
1 7.7

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 SS180 beats 4 of its 4 closest rivals (PIAGGIO PX 200 E, LAMBRETTA GP200, LAMBRETTA LI150).

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 SS180.

Pass rate by registration year

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

Best year to buy used: 1966 (98.0% pass). Weakest: 1965 (92.5%).

91%95%99%1965: 92.5% pass (146 tests)1966: 98.0% pass (50 tests)19651966

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.