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

Data as of: DVSA MOT results to 2025

Royal Enfield Bullet 500 vs Suzuki SV650S

The Royal Enfield Bullet 500 passes its MOT first time more often than the Suzuki SV650S: 88.2% vs 80.6%, a 7.6-point lead.

MOT reliability, side by side

first-time pass rate, outright fail rate and tests analysed · 2005–2025
Metric Royal Enfield Bullet 500 Suzuki SV650S
First-time pass rate 88.2% 80.6%
Outright fail rate 5.2% 11.9%
Vs comparable bikes (age & mileage adjusted) +1.0 pts -4.0 pts
Engine size 499cc 645cc
Rank among all models #1544 of 5428 #3459 of 5428
Median miles at test 6,826 16,958
MOT tests analysed 25,698 84,632
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 Royal Enfield Bullet 500 Suzuki SV650S
Lights & signalling 2.9% 5.0%
Brakes 0.9% 4.7%
Tyres & wheels 1.0% 3.0%
Steering & suspension 0.8% 2.5%
Drive system 0.3% 1.2%
Structure & body 0.5% 0.9%
Fuel & exhaust 0.3% 0.8%

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 Royal Enfield Bullet 500 Suzuki SV650S
2013 88.0% 77.9%
2014 86.5% 78.3%
2015 88.3% 78.6%
2016 89.4% 78.9%
2017 87.2% 78.3%
2018 89.4% 80.4%
2019 87.6% 80.0%
2020 90.9% 80.8%

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 Royal Enfield Bullet 500 Suzuki SV650S
0k-10k miles 88.8% 88.2%
10k-20k miles 87.2% 81.6%
20k-30k miles 86.5% 76.9%
30k-40k miles 86.8% 73.6%
40k-50k miles 86.6% 73.3%
50k-60k miles 86.8% 70.6%

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

Royal Enfield Bullet 500 vs Suzuki SV650S FAQ

answers computed from the data above · terms in the glossary

Which is more reliable, the Royal Enfield Bullet 500 or the Suzuki SV650S?

The Royal Enfield Bullet 500 passes its MOT first time more often than the Suzuki SV650S: 88.2% vs 80.6%, a 7.6-point lead. Adjusted for age, mileage and test class, the Royal Enfield Bullet 500 still comes out ahead: +1.0 points vs comparable bikes for the Royal Enfield Bullet 500, -4.0 for the Suzuki SV650S. An MOT checks roadworthiness items, not engine or gearbox internals.

What does the Royal Enfield Bullet 500 fail its MOT on most?

Lights & signalling: 2.9% of Royal Enfield Bullet 500 MOT tests failed on it, then tyres & wheels (1.0%).

What does the Suzuki SV650S fail its MOT on most?

Lights & signalling: 5.0% of Suzuki SV650S MOT tests failed on it, then brakes (4.7%).

Which holds up better at high mileage, the Royal Enfield Bullet 500 or the Suzuki SV650S?

At 50k-60k miles the Royal Enfield Bullet 500 passes first time more often: 86.8% for the Royal Enfield Bullet 500 vs 70.6% for the Suzuki SV650S.

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