BIKERELIABILITY Reg check
Model report · 2005–2025

GENERIC RACE 50

49cc Petrol Class 1
66.8%
first-time pass rate
24.7%
failed outright
9,339
median miles at test
340
MOT tests, 2005–2025
-5.7pp
vs expected · age & mileage

The pass rate is the MOT first-time pass: a roadworthiness check of the items an MOT covers (brakes, lights, tyres, steering, structure, emissions), not a full mechanical inspection of engine or gearbox internals. It is a reliability signal, not a complete measure of mechanical reliability. What this measures.

“vs expected” adjusts for age, mileage and test class, so a cherished classic and a hard-used commuter are compared fairly. How this works.

Pass rate over time

first-time pass rate by test year · 2013–2016

The RACE 50's first-time pass rate has fallen 7.1 points since 2013, 69.8% to 62.7%.

60%67%74%2013: 69.8% pass (43 tests)2014: 63.2% pass (57 tests)2015: 71.7% pass (60 tests)2016: 62.7% pass (51 tests)20132016

What fails on a RACE 50

failure defects by component group · advisories excluded
Component group Share of defects Defects % of defects
lighting and signalling
89 35.7
brakes
46 18.5
steering and suspension
33 13.3
lamps and reflectors
22 8.8
tyres and wheels
17 6.8
fuel and exhaust
13 5.2
body and structure
10 4
suspension
9 3.6
tyres
5 2
steering
5 2

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 RACE 50 beats 2 of its 4 closest rivals (PEUGEOT SPEEDFIGHT, PIAGGIO ZIP, PIAGGIO NRG).

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 RACE 50.

Compare with any bike

rival not listed above? pick any model to see it head-to-head with the Race 50

Pass rate by registration year

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

Best year to buy used: 2010 (75.6% pass). Weakest: 2011 (60.8%).

58%68%79%2009: 64.8% pass (108 tests)2010: 75.6% pass (90 tests)2011: 60.8% pass (74 tests)200920102011

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.

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Free to embed on your site, blog or forum — a live Generic Race 50 reliability card that stays up to date and links back here. More on the free API page.