BIKERELIABILITY Reg check
League table/ SUPERBYKE/RSR 125
Model report · 2005–2025

SUPERBYKE RSR 125

124cc Petrol Class 1
#5379 of 5428 overall #5 of 7 SUPERBYKEs #710 of 734 commuter bikes
52.1%
first-time pass rate
35.0%
failed outright
10,390
median miles at test
263
MOT tests, 2005–2025
-19.0pp
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 · 2012–2014

The RSR 125's first-time pass rate has risen 6.3 points since 2012, 46.2% to 52.5%.

42%55%68%2012: 46.2% pass (52 tests)2013: 63.8% pass (58 tests)2014: 52.5% pass (40 tests)20122014

Pass rate by mileage

how the RSR 125's first-time pass rate falls with the odometer · class average 73.4%

A low-mileage RSR 125 passes first time 61.8% of the time; by 20k that's 42.9%.

39%52%66%0k: 61.8% pass (123 tests)10k: 45.1% pass (91 tests)20k: 42.9% pass (35 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 RSR 125

failure defects by component group · advisories excluded
Component group Share of defects Defects % of defects
lighting and signalling
68 22.9
brakes
63 21.2
steering and suspension
55 18.5
drive system
32 10.8
tyres and wheels
22 7.4
body and structure
17 5.7
lamps and reflectors
15 5.1
fuel and exhaust
11 3.7
structure and attachments
8 2.7
suspension
6 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 RSR 125 beats 0 of its 4 closest rivals (YAMAHA YBR 125, HONDA CG125, HONDA CBF125).

YAMAHA YBR 125 71.0% pass · 125k tests Compare head-to-head →
HONDA CG125 72.2% pass · 89.3k tests Compare head-to-head →
HONDA CBF125 73.3% pass · 84.4k tests Compare head-to-head →
GILERA RUNNER 70.8% pass · 69.9k tests Compare head-to-head →

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 RSR 125.

Compare with any bike

rival not listed above? pick any model to see it head-to-head with the RSR 125

More SUPERBYKE models

other SUPERBYKE bikes ranked by MOT pass rate
SUPERBYKE RMR 125 53.0% pass · 1,633 tests
SUPERBYKE RBP 125 47.6% pass · 462 tests
SUPERBYKE RMR 55.7% pass · 345 tests
SUPERBYKE POWERBAND 50 54.5% pass · 255 tests
SUPERBYKE SB 125 61.2% pass · 232 tests
SUPERBYKE RMX 125 46.3% pass · 218 tests

See all SUPERBYKE models →

Pass rate by registration year

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

Best year to buy used: 2009 (56.3% pass). Weakest: 2010 (38.0%).

34%47%60%2009: 56.3% pass (176 tests)2010: 38.0% pass (50 tests)20092010

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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