NORTON DOMINATOR 99

600cc Petrol Class 2

#704 of 5426 overall #26 of 34 NORTONs #429 of 2787 other bikes

90.9%

first-time pass rate

3.4%

failed outright

12,813

median miles at test

471

MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2006–2016

The DOMINATOR 99's first-time pass rate has fallen 9.7 points since 2006, 100.0% to 90.3%.

Pass rate by mileage

how the DOMINATOR 99's first-time pass rate falls with the odometer · class average 84.9%

A low-mileage DOMINATOR 99 passes first time 89.2% of the time; by 30k that's 98.4%.

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 DOMINATOR 99

failure defects by component group · advisories excluded

Component group	Defects	% of defects
lighting and signalling	15	48.4
steering and suspension	7	22.6
tyres and wheels	3	9.7
Other	2	6.5
fuel and exhaust	1	3.2
driving controls	1	3.2
brakes	1	3.2
body and structure	1	3.2

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 DOMINATOR 99 beats 4 of its 4 closest rivals (KAWASAKI ZX-6R, SUZUKI GSF600, YAMAHA FZS600).

KAWASAKI ZX-6R 78.1% pass · 174k tests SUZUKI GSF600 77.3% pass · 143k tests YAMAHA FZS600 82.6% pass · 137k tests SUZUKI SV650S 80.6% pass · 84.6k tests

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 DOMINATOR 99.

Pass rate by registration year

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

Best year to buy used: 1957 (94.5% pass). Weakest: 1961 (90.4%).

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.