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
The MRT 50's first-time pass rate has risen 9.2 points since 2013, 50.0% to 59.2%.
What fails on a MRT 50
| Component group | Share of defects | Defects | % of defects | vs all bikes |
|---|---|---|---|---|
| lighting and signalling |
|
266 | 30.4 | 4.1× |
| brakes |
|
153 | 17.5 | 3.7× |
| lamps and reflectors |
|
149 | 17 | 6.5× |
| steering and suspension |
|
90 | 10.3 | 3.2× |
| structure and attachments |
|
62 | 7.1 | 9.1× |
| drive system |
|
46 | 5.3 | 7.7× |
| suspension |
|
35 | 4 | 5.9× |
| tyres and wheels |
|
30 | 3.4 | 2.0× |
| steering |
|
24 | 2.7 | 6.9× |
| audible warning (Horn) |
|
19 | 2.2 | 16.6× |
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
On first-time pass rate the MRT 50 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 MRT 50.
Compare with any bike
More RIEJU models
Pass rate by registration year
Best year to buy used: 2011 (53.3% pass). Weakest: 2013 (48.8%).
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 MRT 50 FAQ
Is the RIEJU MRT 50 reliable?
The RIEJU MRT 50 is less reliable than average for its class: 52.4% of its 626 MOT tests (2005–2025) passed first time, against a class average of 73.4%. That ranks it #5372 of 5428 models.
What does a MRT 50 fail its MOT on most?
lighting and signalling — 30% of all defects recorded against failed MRT 50 tests.
What is the best year of MRT 50 to buy used?
By first-time pass rate, 2011-registered examples do best (53.3%) and 2013 worst (48.8%). Condition and history still trump the year.
Embed this bike
Free to embed on your site, blog or forum — a live Rieju MRT 50 reliability card that stays up to date and links back here. More on the free API page.