Data as of: DVSA MOT results to 2025
BMW G310 vs Suzuki AN400
The BMW G310 passes its MOT first time more often than the Suzuki AN400: 91.3% vs 86.2%, a 5.1-point lead.
MOT reliability, side by side
| Metric | BMW G310 | Suzuki AN400 |
|---|---|---|
| First-time pass rate | 91.3% | 86.2% |
| Outright fail rate | 4.3% | 9.8% |
| Vs comparable bikes (age & mileage adjusted) | +1.9 pts | +1.3 pts |
| Engine size | 313cc | 385cc |
| Rank among all models | #619 of 5428 | #2148 of 5428 |
| Median miles at test | 4,375 | 15,861 |
| MOT tests analysed | 5,862 | 27,056 |
| 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
| Component | BMW G310 | Suzuki AN400 |
|---|---|---|
| Brakes | 1.1% | 4.4% |
| Lights & signalling | 1.9% | 2.6% |
| Tyres & wheels | 0.3% | 3.2% |
| Steering & suspension | 1.1% | 2.3% |
| Structure & body | 1.0% | 0.3% |
| Fuel & exhaust | 0% | 0.4% |
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
| Test year | BMW G310 | Suzuki AN400 |
|---|---|---|
| 2020 | 94.2% | 84.5% |
| 2021 | 90.0% | 85.1% |
| 2022 | 92.3% | 83.0% |
| 2023 | 89.7% | 83.0% |
| 2024 | 91.5% | 83.1% |
| 2025 | 91.8% | 86.9% |
Each year mixes bikes of different ages, so a fleet that is getting older tends to slip.
Pass rate by mileage
| Mileage | BMW G310 | Suzuki AN400 |
|---|---|---|
| 0k-10k miles | 92.0% | 91.7% |
| 10k-20k miles | 86.4% | 86.7% |
| 20k-30k miles | 82.4% | 82.7% |
Bands with fewer than 30 tests for either bike are left out.
BMW G310 vs Suzuki AN400 FAQ
Which is more reliable, the BMW G310 or the Suzuki AN400?
The BMW G310 passes its MOT first time more often than the Suzuki AN400: 91.3% vs 86.2%, a 5.1-point lead. Adjusted for age, mileage and test class the two are level (+1.9 vs +1.3 points against comparable bikes), so the raw gap is mostly down to how old and how used each fleet is. An MOT checks roadworthiness items, not engine or gearbox internals.
What does the BMW G310 fail its MOT on most?
Lights & signalling: 1.9% of BMW G310 MOT tests failed on it, then brakes (1.1%).
What does the Suzuki AN400 fail its MOT on most?
Brakes: 4.4% of Suzuki AN400 MOT tests failed on it, then tyres & wheels (3.2%).
Which holds up better at high mileage, the BMW G310 or the Suzuki AN400?
They are level: at 20k-30k miles the BMW G310 passes 82.4% first time and the Suzuki AN400 82.7%.
See each bike's full report (trend, mileage curve, failure breakdown and rivals) on its own page.