RIEJU RR 50

49cc Petrol Class 1

#5401 of 5426 overall #13 of 16 RIEJUs #445 of 455 moped bikes

48.5%

first-time pass rate

43.2%

failed outright

9,253

median miles at test

600

MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2006–2014

The RR 50's first-time pass rate has risen 4.5 points since 2006, 53.6% to 58.1%.

Pass rate by mileage

how the RR 50's first-time pass rate falls with the odometer · class average 73.4%

A low-mileage RR 50 passes first time 53.9% of the time; by 20k that's 45.3%.

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 RR 50

failure defects by component group · advisories excluded

Component group	Defects	% of defects	vs all bikes
lighting and signalling	357	30.1	6.4×
steering and suspension	355	30	9.2×
brakes	156	13.2	3.9×
drive system	103	8.7	15.2×
lamps and reflectors	53	4.5	2.4×
tyres and wheels	49	4.1	3.7×
fuel and exhaust	40	3.4	7.9×
body and structure	29	2.4	8.3×
structure and attachments	23	1.9	3.2×
reg plates and vin	20	1.7	5.5×

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

PEUGEOT SPEEDFIGHT 65.2% pass · 83.7k tests PIAGGIO ZIP 71.3% pass · 79.0k tests PIAGGIO NRG 65.5% pass · 40.5k tests PEUGEOT VIVACITY 70.4% pass · 29.7k tests

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 RR 50.

Pass rate by registration year

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

Best year to buy used: 2000 (56.0% pass). Weakest: 2003 (43.1%).

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 RR 50 FAQ

answers computed from the data above · terms in the glossary

Is the RIEJU RR 50 reliable?

The RIEJU RR 50 is less reliable than average for its class: 48.5% of its 600 MOT tests (2005–2025) passed first time, against a class average of 73.4%. That ranks it #5401 of 5426 models.

What does a RR 50 fail its MOT on most?

lighting and signalling — 30% of all defects recorded against failed RR 50 tests.

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

By first-time pass rate, 2000-registered examples do best (56.0%) and 2007 worst (43.1%). Condition and history still trump the year.

How many miles will a RR 50 last?

The median RR 50 shows 9,253 miles at test, and examples around 20k miles still pass 45.3% of the time — mileage alone rarely kills one.