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

Data as of: DVSA MOT results to 2025

Sinnis Shuttle (euro 4) vs Honda CBF125

The Honda CBF125 passes its MOT first time more often than the Sinnis Shuttle (euro 4): 73.3% vs 66.8%, a 6.5-point lead.

MOT reliability, side by side

first-time pass rate, outright fail rate and tests analysed · 2005–2025
Metric Sinnis Shuttle (euro 4) Honda CBF125
First-time pass rate 66.8% 73.3%
Outright fail rate 26.7% 16.5%
Vs comparable bikes (age & mileage adjusted) -10.3 pts +1.1 pts
Engine size 125cc 125cc
Rank among all models #4916 of 5428 #4471 of 5428
Median miles at test 4,920 10,974
MOT tests analysed 722 84,425
Most common failure lamps and reflectors 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 Sinnis Shuttle (euro 4) Honda CBF125
Lights & signalling 12.7% 8.0%
Steering & suspension 12.5% 6.2%
Brakes 8.9% 6.8%
Tyres & wheels 6.2% 3.5%
Structure & body 5.0% 4.1%
Drive system 0% 2.0%
Fuel & exhaust 0% 0.1%

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 Sinnis Shuttle (euro 4) Honda CBF125
2020 88.2% 72.1%
2021 62.2% 72.6%
2022 68.8% 72.5%
2023 61.4% 74.4%
2024 66.4% 77.0%
2025 62.3% 79.0%

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 Sinnis Shuttle (euro 4) Honda CBF125
0k-10k miles 65.9% 80.3%
10k-20k miles 61.1% 68.7%

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

Sinnis Shuttle (euro 4) vs Honda CBF125 FAQ

answers computed from the data above · terms in the glossary

Which is more reliable, the Sinnis Shuttle (euro 4) or the Honda CBF125?

The Honda CBF125 passes its MOT first time more often than the Sinnis Shuttle (euro 4): 73.3% vs 66.8%, a 6.5-point lead. Adjusted for age, mileage and test class, the Honda CBF125 still comes out ahead: -10.3 points vs comparable bikes for the Sinnis Shuttle (euro 4), +1.1 for the Honda CBF125. An MOT checks roadworthiness items, not engine or gearbox internals.

What does the Sinnis Shuttle (euro 4) fail its MOT on most?

Lights & signalling: 12.7% of Sinnis Shuttle (euro 4) MOT tests failed on it, then steering & suspension (12.5%).

What does the Honda CBF125 fail its MOT on most?

Lights & signalling: 8.0% of Honda CBF125 MOT tests failed on it, then brakes (6.8%).

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