RIEJU RS

124cc Petrol Class 1

#5200 of 5426 overall #4 of 16 RIEJUs #619 of 734 commuter bikes

60.4%

first-time pass rate

31.1%

failed outright

6,698

median miles at test

988

MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2017–2025

The RS's first-time pass rate has fallen 8.2 points since 2017, 60.7% to 52.5%.

Pass rate by mileage

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

A low-mileage RS passes first time 61.0% of the time; by 20k that's 60.8%.

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 RS

failure defects by component group · advisories excluded

Component group	Defects	% of defects	vs all bikes
lamps and reflectors	277	26.6	9.9×
brakes	255	24.4	3.6×
suspension	168	16.1	16.5×
structure and attachments	149	14.3	15.5×
steering	79	7.6	16.1×
steering and suspension	41	3.9	0.9×
lighting and signalling	30	2.9	0.5×
tyres	21	2	2.8×
drive system	14	1.3	1.7×
tyres and wheels	9	0.9	0.4×

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

YAMAHA YBR 125 71.0% pass · 125k tests HONDA CG125 72.2% pass · 89.3k tests HONDA CBF125 73.3% pass · 84.4k tests GILERA RUNNER 70.8% pass · 69.9k 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 RS.

Pass rate by registration year

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

Best year to buy used: 2017 (69.9% pass). Weakest: 2013 (52.2%).

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 RS FAQ

answers computed from the data above · terms in the glossary

Is the RIEJU RS reliable?

The RIEJU RS is less reliable than average for its class: 60.4% of its 988 MOT tests (2005–2025) passed first time, against a class average of 73.4%. That ranks it #5200 of 5426 models.

What does a RS fail its MOT on most?

lamps and reflectors — 27% of all defects recorded against failed RS tests.

What is the best year of RS to buy used?

By first-time pass rate, 2017-registered examples do best (69.9%) and 2013 worst (52.2%). Condition and history still trump the year.

How many miles will a RS last?

The median RS shows 6,698 miles at test, and examples around 20k miles still pass 60.8% of the time — mileage alone rarely kills one.