BIKERELIABILITY Reg check
League table/ SACHS/ROADSTER 650
Model report · 2005–2025

SACHS ROADSTER 650

644cc Petrol Class 2
#3199 of 5428 overall #2 of 11 SACHSs #2033 of 2788 other bikes
81.9%
first-time pass rate
7.4%
failed outright
11,942
median miles at test
365
MOT tests, 2005–2025
-4.1pp
vs expected · age & mileage

The pass rate is the MOT first-time pass: a roadworthiness check of the items an MOT covers (brakes, lights, tyres, steering, structure, emissions), not a full mechanical inspection of engine or gearbox internals. It is a reliability signal, not a complete measure of mechanical reliability. What this measures.

“vs expected” adjusts for age, mileage and test class, so a cherished classic and a hard-used commuter are compared fairly. How this works.

Pass rate by mileage

how the ROADSTER 650's first-time pass rate falls with the odometer · class average 84.9%

A low-mileage ROADSTER 650 passes first time 84.8% of the time; by 20k that's 81.8%.

79%83%86%0k: 84.8% pass (151 tests)10k: 80.3% pass (117 tests)20k: 81.8% pass (55 tests)0k10k20k

First-time pass rate by odometer reading at test, 10,000-mile bands for this model. Mileage is the strongest reliability signal. See the full curve.

What fails on a ROADSTER 650

failure defects by component group · advisories excluded
Component group Share of defects Defects % of defects
brakes
14 34.1
steering and suspension
8 19.5
lighting and signalling
6 14.6
lamps and reflectors
4 9.8
drive system
3 7.3
tyres and wheels
2 4.9
reg plates and vin
1 2.4
body and structure
1 2.4
structure and attachments
1 2.4
tyres
1 2.4

Defects recorded against failed normal tests, 2005–2025, grouped by DVSA inspection section. One test can record multiple defects.

How rivals compare

same type, similar capacity, high test volume

On first-time pass rate the ROADSTER 650 beats 2 of its 4 closest rivals (KAWASAKI ZX-6R, SUZUKI GSF600, YAMAHA FZS600).

KAWASAKI ZX-6R 78.1% pass · 174k tests Compare head-to-head →
SUZUKI GSF600 77.3% pass · 143k tests Compare head-to-head →
YAMAHA FZS600 82.6% pass · 137k tests Compare head-to-head →
HONDA VFR800 FI 86.7% pass · 89.4k tests Compare head-to-head →

Rivals share this bike's type and sit within ±30% of its engine capacity, ≥ 5,000 tests. Card colour = better/worse first-time pass rate than the ROADSTER 650.

Compare with any bike

rival not listed above? pick any model to see it head-to-head with the Roadster 650

More SACHS models

other SACHS bikes ranked by MOT pass rate
SACHS ROADSTER 79.9% pass · 2,003 tests
SACHS XTC SUPERSPORT 58.4% pass · 1,734 tests
SACHS MADASS 74.4% pass · 1,189 tests
SACHS SX1 63.0% pass · 530 tests
SACHS MADASS 125 80.2% pass · 359 tests
SACHS B805 87.9% pass · 354 tests

See all SACHS models →

Pass rate by registration year

how each model-year cohort fares · registration year from first use date

Best year to buy used: 2004 (83.6% pass). Weakest: 2003 (77.0%).

76%80%85%2003: 77.0% pass (183 tests)2004: 83.6% pass (67 tests)20032004

First-time pass rate by the year each bike was first registered (cohorts with ≥ 50 tests). Older cohorts are survivors: the worst examples have already left the road, which tends to lift the earliest years.

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Free to embed on your site, blog or forum — a live Sachs Roadster 650 reliability card that stays up to date and links back here. More on the free API page.