BIKERELIABILITY Reg check
League table/ RIEJU/RS2 50
Model report · 2005–2025

RIEJU RS2 50

49cc Petrol Class 1
#5403 of 5428 overall #13 of 16 RIEJUs #446 of 456 moped bikes
48.5%
first-time pass rate
40.5%
failed outright
9,735
median miles at test
619
MOT tests, 2005–2025
-22.8pp
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 · 2007–2016

The RS2 50's first-time pass rate has risen 2.2 points since 2007, 47.8% to 50.0%.

26%48%69%2007: 47.8% pass (46 tests)2008: 54.8% pass (42 tests)2009: 53.2% pass (47 tests)2010: 62.0% pass (50 tests)2011: 49.2% pass (59 tests)2012: 33.3% pass (66 tests)2013: 49.3% pass (71 tests)2014: 44.4% pass (45 tests)2015: 37.8% pass (37 tests)2016: 50.0% pass (32 tests)20072016

What fails on a RS2 50

failure defects by component group · advisories excluded
Component group Share of defects Defects % of defects vs all bikes
lighting and signalling
340 33.8 6.2×
steering and suspension
270 26.8 8.1×
brakes
151 15 3.5×
drive system
81 8 13.2×
body and structure
51 5.1 12.5×
lamps and reflectors
40 4 2.0×
tyres and wheels
24 2.4 1.8×
structure and attachments
20 2 2.8×
fuel and exhaust
18 1.8 3.6×
suspension
12 1.2 2.0×

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 50 beats 0 of its 4 closest rivals (PEUGEOT SPEEDFIGHT, PIAGGIO ZIP, PIAGGIO NRG).

PEUGEOT SPEEDFIGHT 65.2% pass · 83.7k tests Compare head-to-head →
PIAGGIO ZIP 71.3% pass · 79.0k tests Compare head-to-head →
PIAGGIO NRG 65.5% pass · 40.5k tests Compare head-to-head →
PEUGEOT VIVACITY 70.4% pass · 29.7k 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 RS2 50.

Compare with any bike

rival not listed above? pick any model to see it head-to-head with the RS2 50

More RIEJU models

other RIEJU bikes ranked by MOT pass rate
RIEJU MRT 60.0% pass · 1,618 tests
RIEJU RS2 50.8% pass · 1,475 tests
RIEJU MARATHON 59.9% pass · 1,020 tests
RIEJU RS 60.4% pass · 988 tests
RIEJU MRT 50 52.4% pass · 626 tests
RIEJU RR 50 48.5% pass · 600 tests

See all RIEJU models →

Pass rate by registration year

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

Best year to buy used: 2003 (50.8% pass). Weakest: 2007 (38.7%).

36%45%53%2003: 50.8% pass (124 tests)2004: 46.4% pass (125 tests)2006: 45.8% pass (59 tests)2007: 38.7% pass (62 tests)2008: 40.0% pass (55 tests)2009: 45.5% pass (101 tests)200320072009

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 50 FAQ

answers computed from the data above · terms in the glossary

Is the RIEJU RS2 50 reliable?

The RIEJU RS2 50 is less reliable than average for its class: 48.5% of its 619 MOT tests (2005–2025) passed first time, against a class average of 73.4%. That ranks it #5403 of 5428 models.

What does a RS2 50 fail its MOT on most?

lighting and signalling — 34% of all defects recorded against failed RS2 50 tests.

What is the best year of RS2 50 to buy used?

By first-time pass rate, 2003-registered examples do best (50.8%) and 2007 worst (38.7%). Condition and history still trump the year.

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