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

APRILIA RS 50

50cc Petrol Class 1
52.4%
first-time pass rate
38.7%
failed outright
16,424
median miles at test
13.7k
MOT tests, 2005–2025

Pass rate over time

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

The RS 50's first-time pass rate has risen 16.0 points since 2005, 56.3% to 72.3%.

40%60%79%2005: 56.3% pass (240 tests)2006: 53.9% pass (1,192 tests)2007: 50.0% pass (1,093 tests)2008: 48.0% pass (1,098 tests)2009: 46.7% pass (1,130 tests)2010: 49.0% pass (1,156 tests)2011: 49.3% pass (1,247 tests)2012: 49.6% pass (1,085 tests)2013: 47.9% pass (1,045 tests)2014: 51.8% pass (910 tests)2015: 53.9% pass (707 tests)2016: 54.6% pass (593 tests)2017: 59.3% pass (457 tests)2018: 61.9% pass (312 tests)2019: 59.6% pass (225 tests)2020: 62.2% pass (217 tests)2021: 64.1% pass (234 tests)2022: 67.9% pass (221 tests)2023: 69.7% pass (234 tests)2024: 68.6% pass (153 tests)2025: 72.3% pass (148 tests)20052025

Pass rate by mileage

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

A low-mileage RS 50 passes first time 60.7% of the time; by 50k that's 43.8%.

40%52%64%0k: 60.7% pass (3,271 tests)10k: 51.7% pass (5,153 tests)20k: 48.9% pass (3,223 tests)30k: 46.7% pass (1,264 tests)40k: 45.5% pass (341 tests)50k: 43.8% pass (105 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 RS 50

failure defects by component group · advisories excluded
Component group Share of defects Defects % of defects vs all bikes
lighting and signalling
6,181 30 5.8×
steering and suspension
5,418 26.3 7.3×
brakes
3,543 17.2 3.9×
drive system
1,676 8.1 12.6×
body and structure
1,273 6.2 14.1×
fuel and exhaust
731 3.5 6.1×
tyres and wheels
715 3.5 2.3×
lamps and reflectors
464 2.3 1.2×
reg plates and vin
325 1.6 3.6×
structure and attachments
294 1.4 2.0×

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 RS 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 RS 50.

Pass rate by registration year

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

Best year to buy used: 2010 (66.8% pass). Weakest: 1998 (46.9%).

43%57%71%1997: 60.9% pass (156 tests)1998: 46.9% pass (454 tests)1999: 47.3% pass (980 tests)2000: 49.9% pass (1,499 tests)2001: 47.3% pass (1,148 tests)2002: 49.4% pass (984 tests)2003: 51.3% pass (1,718 tests)2004: 50.3% pass (1,330 tests)2005: 49.2% pass (1,093 tests)2006: 55.1% pass (1,081 tests)2007: 56.4% pass (987 tests)2008: 58.9% pass (808 tests)2009: 59.5% pass (501 tests)2010: 66.8% pass (413 tests)2011: 63.6% pass (236 tests)199720042011

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 RS 50 FAQ

answers computed from the data above · terms in the glossary

Is the APRILIA RS 50 reliable?

The APRILIA RS 50 is less reliable than average for its class: 52.4% of its 13,697 MOT tests (2005–2025) passed first time, against a class average of 73.4%. That ranks it #5370 of 5426 models.

What does a RS 50 fail its MOT on most?

lighting and signalling — 30% of all defects recorded against failed RS 50 tests.

What is the best year of RS 50 to buy used?

By first-time pass rate, 2010-registered examples do best (66.8%) and 1998 worst (46.9%). Condition and history still trump the year.

How many miles will a RS 50 last?

The median RS 50 shows 16,424 miles at test, and examples around 50k miles still pass 43.8% of the time — mileage alone rarely kills one.