BIKERELIABILITY Reg check
Head-to-head · 2005–2025

Data as of: DVSA MOT results to 2025

SYM AW12W Fiddle Ii 125 S vs Honda PCX 125

The Honda PCX 125 passes its MOT first time more often than the SYM AW12W Fiddle Ii 125 S: 81.1% vs 77.1%, a 4.0-point lead.

MOT reliability, side by side

first-time pass rate, outright fail rate and tests analysed · 2005–2025
Metric SYM AW12W Fiddle Ii 125 S Honda PCX 125
First-time pass rate 77.1% 81.1%
Outright fail rate 15.2% 12.9%
Vs comparable bikes (age & mileage adjusted) +5.7 pts +8.2 pts
Engine size 125cc 125cc
Rank among all models #4044 of 5428 #3358 of 5428
Median miles at test 9,939 16,405
MOT tests analysed 612 88,608
Most common failure brakes brakes

First-time outcomes on normal tests, 2005–2025. "Most common failure" is the component group with the most recorded defects on failed tests. Read pass rates against test counts: a smaller sample is noisier. Source: DVSA anonymised MOT results.

"Vs comparable bikes" is the first-time pass rate minus the rate expected for each bike's own mix of age, mileage and test class, in percentage points: positive means better than comparable bikes. How this works.

What fails, side by side

share of each bike's MOT tests that failed on the component · lower is better
Component SYM AW12W Fiddle Ii 125 S Honda PCX 125
Lights & signalling 8.3% 3.9%
Brakes 5.2% 6.7%
Tyres & wheels 4.2% 5.3%
Steering & suspension 3.9% 4.4%
Structure & body 0.8% 0.7%
Fuel & exhaust 0.8% 0.0%

A test that fails on two components counts once in each. Component links go to the bikes most likely to fail on it.

Pass rate by test year

first-time MOT pass rate in each calendar year both bikes were tested
Test year SYM AW12W Fiddle Ii 125 S Honda PCX 125
2014 89.7% 84.4%
2015 73.8% 83.5%
2016 75.4% 82.5%
2017 71.9% 80.5%
2018 76.4% 81.2%
2019 82.5% 79.9%
2020 70.0% 82.3%
2021 81.1% 80.3%

Each year mixes bikes of different ages, so a fleet that is getting older tends to slip.

Pass rate by mileage

first-time MOT pass rate by miles on the clock at test
Mileage SYM AW12W Fiddle Ii 125 S Honda PCX 125
0k-10k miles 81.1% 88.4%
10k-20k miles 72.9% 79.3%
20k-30k miles 77.0% 78.0%

Bands with fewer than 30 tests for either bike are left out.

SYM AW12W Fiddle Ii 125 S vs Honda PCX 125 FAQ

answers computed from the data above · terms in the glossary

Which is more reliable, the SYM AW12W Fiddle Ii 125 S or the Honda PCX 125?

The Honda PCX 125 passes its MOT first time more often than the SYM AW12W Fiddle Ii 125 S: 81.1% vs 77.1%, a 4.0-point lead. Adjusted for age, mileage and test class, the Honda PCX 125 still comes out ahead: +5.7 points vs comparable bikes for the SYM AW12W Fiddle Ii 125 S, +8.2 for the Honda PCX 125. An MOT checks roadworthiness items, not engine or gearbox internals.

What does the SYM AW12W Fiddle Ii 125 S fail its MOT on most?

Lights & signalling: 8.3% of SYM AW12W Fiddle Ii 125 S MOT tests failed on it, then brakes (5.2%).

What does the Honda PCX 125 fail its MOT on most?

Brakes: 6.7% of Honda PCX 125 MOT tests failed on it, then tyres & wheels (5.3%).

Which holds up better at high mileage, the SYM AW12W Fiddle Ii 125 S or the Honda PCX 125?

At 20k-30k miles the Honda PCX 125 passes first time more often: 77.0% for the SYM AW12W Fiddle Ii 125 S vs 78.0% for the Honda PCX 125.

See each bike's full report (trend, mileage curve, failure breakdown and rivals) on its own page.