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

Data as of: DVSA MOT results to 2025

SYM AV05W Symply 50 vs Piaggio Zip

The SYM AV05W Symply 50 passes its MOT first time more often than the Piaggio Zip: 80.5% vs 71.3%, a 9.2-point lead.

MOT reliability, side by side

first-time pass rate, outright fail rate and tests analysed · 2005–2025
Metric SYM AV05W Symply 50 Piaggio Zip
First-time pass rate 80.5% 71.3%
Outright fail rate 13.3% 20.4%
Vs comparable bikes (age & mileage adjusted) +9.1 pts -1.0 pts
Engine size 49cc 49cc
Rank among all models #3478 of 5428 #4631 of 5428
Median miles at test 9,960 8,882
MOT tests analysed 879 78,993
Most common failure brakes lighting and signalling

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 AV05W Symply 50 Piaggio Zip
Lights & signalling 5.8% 11.9%
Steering & suspension 3.4% 9.2%
Brakes 5.9% 6.5%
Tyres & wheels 1.1% 4.0%
Structure & body 1.9% 1.6%
Fuel & exhaust 0.7% 2.5%
Drive system 0.1% 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 AV05W Symply 50 Piaggio Zip
2016 85.6% 71.0%
2017 81.6% 71.7%
2018 77.9% 72.9%
2019 72.2% 73.0%
2020 82.2% 73.1%
2021 76.6% 73.3%
2022 71.8% 74.5%
2023 70.0% 74.1%

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 AV05W Symply 50 Piaggio Zip
0k-10k miles 86.9% 75.2%
10k-20k miles 75.3% 66.7%
20k-30k miles 73.2% 64.4%

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

SYM AV05W Symply 50 vs Piaggio Zip FAQ

answers computed from the data above · terms in the glossary

Which is more reliable, the SYM AV05W Symply 50 or the Piaggio Zip?

The SYM AV05W Symply 50 passes its MOT first time more often than the Piaggio Zip: 80.5% vs 71.3%, a 9.2-point lead. Adjusted for age, mileage and test class, the SYM AV05W Symply 50 still comes out ahead: +9.1 points vs comparable bikes for the SYM AV05W Symply 50, -1.0 for the Piaggio Zip. An MOT checks roadworthiness items, not engine or gearbox internals.

What does the SYM AV05W Symply 50 fail its MOT on most?

Brakes: 5.9% of SYM AV05W Symply 50 MOT tests failed on it, then lights & signalling (5.8%).

What does the Piaggio Zip fail its MOT on most?

Lights & signalling: 11.9% of Piaggio Zip MOT tests failed on it, then steering & suspension (9.2%).

Which holds up better at high mileage, the SYM AV05W Symply 50 or the Piaggio Zip?

At 20k-30k miles the SYM AV05W Symply 50 passes first time more often: 73.2% for the SYM AV05W Symply 50 vs 64.4% for the Piaggio Zip.

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