Royal Enfield Bullet Efi vs Suzuki SV650S

The Royal Enfield Bullet Efi passes its MOT first time more often than the Suzuki SV650S: 90.7% vs 80.6%, a 10.1-point lead.

MOT reliability, side by side

first-time pass rate, outright fail rate and tests analysed · 2005–2025

Metric	Royal Enfield Bullet Efi	Suzuki SV650S
First-time pass rate	90.7%	80.6%
Outright fail rate	4.7%	11.9%
Vs comparable bikes (age & mileage adjusted)	+2.1 pts	-4.0 pts
Engine size	499cc	645cc
Rank among all models	#748 of 5428	#3459 of 5428
Median miles at test	4,780	16,958
MOT tests analysed	644	84,632
Most common failure	lamps and reflectors	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 Efi	Suzuki SV650S
Lights & signalling	1.9%	5.0%
Brakes	1.6%	4.7%
Tyres & wheels	0.8%	3.0%
Steering & suspension	0.6%	2.5%
Drive system	0.6%	1.2%
Structure & body	0.6%	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 Efi	Suzuki SV650S
2015	88.1%	78.6%
2016	92.1%	78.9%
2017	93.0%	78.3%
2018	86.2%	80.4%
2019	92.6%	80.0%
2020	92.6%	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 Efi	Suzuki SV650S
0k-10k miles	91.8%	88.2%
10k-20k miles	85.0%	81.6%

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

Royal Enfield Bullet Efi vs Suzuki SV650S FAQ

answers computed from the data above · terms in the glossary

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

The Royal Enfield Bullet Efi passes its MOT first time more often than the Suzuki SV650S: 90.7% vs 80.6%, a 10.1-point lead. Adjusted for age, mileage and test class, the Royal Enfield Bullet Efi still comes out ahead: +2.1 points vs comparable bikes for the Royal Enfield Bullet Efi, -4.0 for the Suzuki SV650S. An MOT checks roadworthiness items, not engine or gearbox internals.

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

Lights & signalling: 1.9% of Royal Enfield Bullet Efi MOT tests failed on it, then brakes (1.6%).

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%).

ROYAL ENFIELD BULLET EFI 90.7% pass · 644 tests SUZUKI SV650S 80.6% pass · 84.6k tests

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