GENERIC TRIGGER SM 50

50cc Petrol Class 1

#5366 of 5426 overall #8 of 9 GENERICs #427 of 455 moped bikes

52.6%

first-time pass rate

36.5%

failed outright

8,779

median miles at test

620

MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2011–2017

The TRIGGER SM 50's first-time pass rate has fallen 12.4 points since 2011, 63.4% to 51.0%.

Pass rate by mileage

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

A low-mileage TRIGGER SM 50 passes first time 54.5% of the time; by 20k that's 50.0%.

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 TRIGGER SM 50

failure defects by component group · advisories excluded

Component group	Defects	% of defects	vs all bikes
lighting and signalling	257	31.8	5.5×
steering and suspension	187	23.1	5.6×
brakes	121	15	3.2×
drive system	78	9.6	13.0×
body and structure	44	5.4	11.4×
lamps and reflectors	40	4.9	2.3×
fuel and exhaust	27	3.3	5.1×
structure and attachments	21	2.6	3.5×
suspension	19	2.3	3.3×
driving controls	15	1.9	9.6×

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

same type, similar capacity, high test volume

On first-time pass rate the TRIGGER SM 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 TRIGGER SM 50.

Pass rate by registration year

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

Best year to buy used: 2008 (56.7% pass). Weakest: 2012 (46.0%).

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.

GENERIC TRIGGER SM 50 FAQ

answers computed from the data above · terms in the glossary

Is the GENERIC TRIGGER SM 50 reliable?

The GENERIC TRIGGER SM 50 is less reliable than average for its class: 52.6% of its 620 MOT tests (2005–2025) passed first time, against a class average of 73.4%. That ranks it #5366 of 5426 models.

What does a TRIGGER SM 50 fail its MOT on most?

lighting and signalling — 32% of all defects recorded against failed TRIGGER SM 50 tests.

What is the best year of TRIGGER SM 50 to buy used?

By first-time pass rate, 2008-registered examples do best (56.7%) and 2012 worst (46.0%). Condition and history still trump the year.

How many miles will a TRIGGER SM 50 last?

The median TRIGGER SM 50 shows 8,779 miles at test, and examples around 20k miles still pass 50.0% of the time — mileage alone rarely kills one.