BIKERELIABILITY
MOT DATA · GREAT BRITAIN · 2005–2025
Model report · 2005–2025

RIEJU RS2

49cc Petrol Class 1
50.8%
first-time pass rate
39.3%
failed outright
9,270
median miles at test
1,475
MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2007–2023

The RS2's first-time pass rate has risen 17.8 points since 2007, 41.7% to 59.5%.

31%49%68%2007: 41.7% pass (48 tests)2008: 59.1% pass (66 tests)2009: 41.4% pass (70 tests)2010: 47.4% pass (95 tests)2011: 50.0% pass (130 tests)2012: 39.7% pass (146 tests)2013: 51.9% pass (160 tests)2014: 54.0% pass (137 tests)2015: 56.1% pass (123 tests)2016: 58.0% pass (100 tests)2017: 54.7% pass (86 tests)2018: 56.1% pass (57 tests)2019: 61.7% pass (47 tests)2020: 42.9% pass (42 tests)2021: 37.1% pass (35 tests)2023: 59.5% pass (37 tests)20072023

Pass rate by mileage

how the RS2's first-time pass rate falls with the odometer · class average 73.4%

A low-mileage RS2 passes first time 53.3% of the time; by 20k that's 36.6%.

33%45%57%0k: 53.3% pass (784 tests)10k: 50.4% pass (526 tests)20k: 36.6% pass (101 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 RS2

failure defects by component group · advisories excluded
Component group Share of defects Defects % of defects vs all bikes
lighting and signalling
600 26.8 5.6×
steering and suspension
570 25.4 7.3×
brakes
356 15.9 3.7×
drive system
185 8.3 12.9×
body and structure
145 6.5 15.1×
lamps and reflectors
127 5.7 2.7×
structure and attachments
70 3.1 4.1×
suspension
68 3 4.0×
tyres and wheels
62 2.8 1.9×
fuel and exhaust
57 2.5 4.6×

Defects recorded against failed normal tests, 2005–2025, grouped by DVSA inspection section. One test can record multiple defects. "vs all bikes" is how often this model's tests record a defect in the group, as a multiple of the all-bike rate.

How rivals compare

same type, similar capacity, high test volume

On first-time pass rate the RS2 beats 0 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 RS2.

Pass rate by registration year

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

Best year to buy used: 2009 (58.1% pass). Weakest: 2004 (43.4%).

40%51%61%2003: 50.8% pass (185 tests)2004: 43.4% pass (182 tests)2006: 51.9% pass (266 tests)2007: 51.4% pass (173 tests)2008: 46.1% pass (206 tests)2009: 58.1% pass (203 tests)2010: 55.0% pass (111 tests)2011: 54.4% pass (57 tests)200320082011

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.

RIEJU RS2 FAQ

answers computed from the data above · terms in the glossary

Is the RIEJU RS2 reliable?

The RIEJU RS2 is less reliable than average for its class: 50.8% of its 1,475 MOT tests (2005–2025) passed first time, against a class average of 73.4%. That ranks it #5388 of 5426 models.

What does a RS2 fail its MOT on most?

lighting and signalling — 27% of all defects recorded against failed RS2 tests.

What is the best year of RS2 to buy used?

By first-time pass rate, 2009-registered examples do best (58.1%) and 2004 worst (43.4%). Condition and history still trump the year.

How many miles will a RS2 last?

The median RS2 shows 9,270 miles at test, and examples around 20k miles still pass 36.6% of the time — mileage alone rarely kills one.