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

Data as of: DVSA MOT results to 2025

Motor Hispania RX50 vs Piaggio Zip

The Piaggio Zip passes its MOT first time more often than the Motor Hispania RX50: 71.3% vs 51.0%, a 20.3-point lead.

MOT reliability, side by side

first-time pass rate, outright fail rate and tests analysed · 2005–2025
Metric Motor Hispania RX50 Piaggio Zip
First-time pass rate 51.0% 71.3%
Outright fail rate 40.1% 20.4%
Vs comparable bikes (age & mileage adjusted) -20.9 pts -1.0 pts
Engine size 49cc 49cc
Rank among all models #5389 of 5428 #4631 of 5428
Median miles at test 11,106 8,882
MOT tests analysed 716 78,993
Most common failure lighting and signalling 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 Motor Hispania RX50 Piaggio Zip
Lights & signalling 31.1% 11.9%
Steering & suspension 26.3% 9.2%
Brakes 17.3% 6.5%
Drive system 9.4% 0.0%
Tyres & wheels 5.2% 4.0%
Structure & body 6.4% 1.6%
Fuel & exhaust 3.6% 2.5%

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 Motor Hispania RX50 Piaggio Zip
2007 48.4% 71.0%
2008 50.0% 72.4%
2009 48.1% 70.0%
2010 46.9% 70.8%
2011 47.5% 69.7%
2012 46.5% 69.1%
2013 39.4% 69.7%
2014 51.2% 68.8%

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 Motor Hispania RX50 Piaggio Zip
0k-10k miles 54.7% 75.2%
10k-20k miles 48.5% 66.7%
20k-30k miles 46.4% 64.4%

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

Motor Hispania RX50 vs Piaggio Zip FAQ

answers computed from the data above · terms in the glossary

Which is more reliable, the Motor Hispania RX50 or the Piaggio Zip?

The Piaggio Zip passes its MOT first time more often than the Motor Hispania RX50: 71.3% vs 51.0%, a 20.3-point lead. Adjusted for age, mileage and test class, the Piaggio Zip still comes out ahead: -20.9 points vs comparable bikes for the Motor Hispania RX50, -1.0 for the Piaggio Zip. An MOT checks roadworthiness items, not engine or gearbox internals.

What does the Motor Hispania RX50 fail its MOT on most?

Lights & signalling: 31.1% of Motor Hispania RX50 MOT tests failed on it, then steering & suspension (26.3%).

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 Motor Hispania RX50 or the Piaggio Zip?

At 20k-30k miles the Piaggio Zip passes first time more often: 46.4% for the Motor Hispania RX50 vs 64.4% for the Piaggio Zip.

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