BIKERELIABILITY Reg check
Model report · 2005–2025

SUPERBYKE RMR

125cc Petrol Class 1
#5331 of 5428 overall #2 of 7 SUPERBYKEs #688 of 734 commuter bikes
55.7%
first-time pass rate
36.8%
failed outright
7,737
median miles at test
345
MOT tests, 2005–2025
-17.8pp
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 · 2017–2022

The RMR's first-time pass rate has fallen 11.6 points since 2017, 60.0% to 48.4%.

46%54%63%2017: 60.0% pass (50 tests)2018: 59.1% pass (44 tests)2019: 55.8% pass (43 tests)2021: 53.7% pass (41 tests)2022: 48.4% pass (31 tests)20172022

Pass rate by mileage

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

A low-mileage RMR passes first time 54.5% of the time; by 20k that's 54.8%.

54%56%58%0k: 54.5% pass (200 tests)10k: 56.7% pass (97 tests)20k: 54.8% pass (31 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 RMR

failure defects by component group · advisories excluded
Component group Share of defects Defects % of defects
lamps and reflectors
106 22.3
brakes
87 18.3
suspension
66 13.9
structure and attachments
66 13.9
lighting and signalling
52 10.9
steering and suspension
35 7.4
drive system
23 4.8
tyres and wheels
15 3.2
tyres
14 2.9
steering
12 2.5

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 RMR beats 0 of its 4 closest rivals (YAMAHA YBR 125, HONDA CG125, HONDA CBF125).

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 RMR.

Compare with any bike

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

Pass rate by registration year

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

Best year to buy used: 2014 (58.2% pass). Weakest: 2016 (40.7%).

37%49%62%2014: 58.2% pass (91 tests)2015: 53.3% pass (60 tests)2016: 40.7% pass (54 tests)201420152016

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 Superbyke RMR reliability card that stays up to date and links back here. More on the free API page.