BIKERELIABILITY
MOT DATA · GREAT BRITAIN · 2005–2025
Model report · 2005–2025

APRILIA SR50

49cc Petrol Class 1
65.8%
first-time pass rate
25.7%
failed outright
11,155
median miles at test
23.9k
MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2005–2025

The SR50's first-time pass rate has risen 8.1 points since 2005, 67.9% to 76.0%.

58%69%80%2005: 67.9% pass (393 tests)2006: 68.4% pass (1,896 tests)2007: 67.2% pass (1,822 tests)2008: 65.3% pass (1,818 tests)2009: 63.2% pass (1,872 tests)2010: 62.1% pass (1,908 tests)2011: 63.3% pass (2,019 tests)2012: 61.2% pass (1,912 tests)2013: 62.0% pass (1,717 tests)2014: 62.0% pass (1,465 tests)2015: 65.1% pass (1,219 tests)2016: 69.7% pass (1,055 tests)2017: 68.3% pass (851 tests)2018: 69.9% pass (585 tests)2019: 67.5% pass (590 tests)2020: 74.9% pass (578 tests)2021: 72.4% pass (619 tests)2022: 74.8% pass (543 tests)2023: 72.0% pass (486 tests)2024: 73.5% pass (298 tests)2025: 76.0% pass (287 tests)20052025

Pass rate by mileage

how the SR50's first-time pass rate falls with the odometer · class average 73.4%

A low-mileage SR50 passes first time 72.3% of the time; by 50k that's 59.5%.

57%66%75%0k: 72.3% pass (10,202 tests)10k: 61.8% pass (9,339 tests)20k: 59.4% pass (2,986 tests)30k: 59.8% pass (692 tests)40k: 62.4% pass (133 tests)50k: 59.5% pass (42 tests)0k30k50k

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 SR50

failure defects by component group · advisories excluded
Component group Share of defects Defects % of defects vs all bikes
lighting and signalling
5,599 31.9 3.4×
steering and suspension
4,164 23.8 3.9×
brakes
3,321 18.9 2.3×
fuel and exhaust
1,204 6.9 5.6×
tyres and wheels
1,110 6.3 2.1×
lamps and reflectors
688 3.9 1.1×
body and structure
507 2.9 4.0×
reg plates and vin
399 2.3 2.5×
suspension
319 1.8 1.5×
structure and attachments
217 1.2 1.0×

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 SR50 beats 2 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 SR50.

Pass rate by registration year

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

Best year to buy used: 2018 (82.1% pass). Weakest: 2006 (61.6%).

58%72%86%1996: 67.5% pass (83 tests)1997: 68.7% pass (163 tests)1998: 66.7% pass (348 tests)1999: 67.7% pass (668 tests)2000: 66.0% pass (1,226 tests)2001: 67.7% pass (1,596 tests)2002: 69.0% pass (1,744 tests)2003: 65.7% pass (3,092 tests)2004: 63.9% pass (2,166 tests)2005: 62.0% pass (2,071 tests)2006: 61.6% pass (1,961 tests)2007: 64.3% pass (1,957 tests)2008: 64.6% pass (1,834 tests)2009: 64.8% pass (1,135 tests)2010: 66.4% pass (670 tests)2011: 69.0% pass (716 tests)2012: 69.1% pass (517 tests)2013: 70.9% pass (436 tests)2014: 72.0% pass (296 tests)2015: 71.3% pass (356 tests)2016: 72.0% pass (347 tests)2017: 74.8% pass (425 tests)2018: 82.1% pass (56 tests)199620072018

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 SR50 FAQ

answers computed from the data above · terms in the glossary

Is the APRILIA SR50 reliable?

The APRILIA SR50 is less reliable than average for its class: 65.8% of its 23,933 MOT tests (2005–2025) passed first time, against a class average of 73.4%. That ranks it #4977 of 5426 models.

What does a SR50 fail its MOT on most?

lighting and signalling — 32% of all defects recorded against failed SR50 tests.

What is the best year of SR50 to buy used?

By first-time pass rate, 2018-registered examples do best (82.1%) and 2006 worst (61.6%). Condition and history still trump the year.

How many miles will a SR50 last?

The median SR50 shows 11,155 miles at test, and examples around 50k miles still pass 59.5% of the time — mileage alone rarely kills one.