RIEJU SMX50

49cc Petrol Class 1

#5405 of 5426 overall #15 of 16 RIEJUs #447 of 455 moped bikes

48.1%

first-time pass rate

39.6%

failed outright

11,008

median miles at test

293

MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2012–2013

The SMX50's first-time pass rate has risen 6.2 points since 2012, 31.3% to 37.5%.

What fails on a SMX50

failure defects by component group · advisories excluded

Component group	Defects	% of defects
lighting and signalling	210	35.5
steering and suspension	138	23.3
brakes	79	13.3
drive system	55	9.3
fuel and exhaust	28	4.7
lamps and reflectors	26	4.4
reg plates and vin	21	3.5
body and structure	17	2.9
tyres and wheels	12	2
suspension	6	1

Defects recorded against failed normal tests, 2005–2025, grouped by DVSA inspection section. One test can record multiple defects.

How rivals compare

same type, similar capacity, high test volume

On first-time pass rate the SMX50 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 SMX50.

Pass rate by registration year

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

Best year to buy used: 2004 (54.1% pass). Weakest: 2008 (49.1%).

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.