APRILIA SX

50cc Petrol Class 1

#5052 of 5426 overall #105 of 128 APRILIAs #339 of 455 moped bikes

64.1%

first-time pass rate

25.3%

failed outright

7,978

median miles at test

1,366

MOT tests, 2005–2025

Pass rate over time

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

The SX's first-time pass rate has fallen 3.9 points since 2017, 68.2% to 64.3%.

Pass rate by mileage

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

A low-mileage SX passes first time 66.1% of the time; by 20k that's 62.1%.

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 SX

failure defects by component group · advisories excluded

Component group	Defects	% of defects	vs all bikes
lamps and reflectors	436	37.9	10.7×
structure and attachments	178	15.5	13.3×
brakes	172	14.9	2.2×
suspension	150	13	10.9×
audible warning (Horn)	55	4.8	22.0×
steering	43	3.7	6.2×
lighting and signalling	39	3.4	0.3×
tyres	32	2.8	2.7×
Identification of the vehicle	25	2.2	7.6×
drive system	21	1.8	1.1×

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 SX 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 SX.

Pass rate by registration year

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

Best year to buy used: 2013 (70.2% pass). Weakest: 2019 (58.9%).

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.

APRILIA SX FAQ

answers computed from the data above · terms in the glossary

Is the APRILIA SX reliable?

The APRILIA SX is less reliable than average for its class: 64.1% of its 1,366 MOT tests (2005–2025) passed first time, against a class average of 73.4%. That ranks it #5052 of 5426 models.

What does a SX fail its MOT on most?

lamps and reflectors — 38% of all defects recorded against failed SX tests.

What is the best year of SX to buy used?

By first-time pass rate, 2013-registered examples do best (70.2%) and 2019 worst (58.9%). Condition and history still trump the year.

How many miles will a SX last?

The median SX shows 7,978 miles at test, and examples around 20k miles still pass 62.1% of the time — mileage alone rarely kills one.