BIKERELIABILITY
MOT DATA · GREAT BRITAIN · 2005–2025
Model report · 2005–2025

NORTON P11

750cc Petrol Class 2
#297 of 5426 overall #11 of 34 NORTONs #184 of 2787 other bikes
93.0%
first-time pass rate
1.0%
failed outright
3,051
median miles at test
201
MOT tests, 2005–2025

What fails on a P11

failure defects by component group · advisories excluded
Component group Share of defects Defects % of defects
fuel and exhaust
1 50
lighting and signalling
1 50

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 P11 beats 4 of its 4 closest rivals (KAWASAKI ZX-6R, SUZUKI GSF600, YAMAHA FZS600).

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 P11.

Pass rate by registration year

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

Best year to buy used: 1967 (93.9% pass). Weakest: 1968 (90.8%).

90%92%95%1967: 93.9% pass (98 tests)1968: 90.8% pass (87 tests)19671968

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.