BIKERELIABILITY
MOT DATA · GREAT BRITAIN · 2005–2025
League table/ ROYAL ENFIELD/CONSTELLATION
Model report · 2005–2025

ROYAL ENFIELD CONSTELLATION

700cc Petrol Class 2
90.3%
first-time pass rate
3.3%
failed outright
19,151
median miles at test
393
MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2006–2012

The CONSTELLATION's first-time pass rate has fallen 10.6 points since 2006, 94.4% to 83.8%.

81%89%97%2006: 94.4% pass (36 tests)2007: 89.5% pass (38 tests)2008: 92.3% pass (39 tests)2009: 84.2% pass (38 tests)2010: 88.6% pass (44 tests)2011: 91.3% pass (46 tests)2012: 83.8% pass (37 tests)20062012

Pass rate by mileage

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

A low-mileage CONSTELLATION passes first time 87.6% of the time; by 40k that's 91.5%.

87%90%92%0k: 87.6% pass (153 tests)10k: 89.1% pass (55 tests)20k: 89.7% pass (78 tests)40k: 91.5% pass (47 tests)0k20k40k

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 CONSTELLATION

failure defects by component group · advisories excluded
Component group Share of defects Defects % of defects
lighting and signalling
19 73.1
steering and suspension
3 11.5
brakes
2 7.7
body and structure
1 3.8
tyres and wheels
1 3.8

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

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 CONSTELLATION.

Pass rate by registration year

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

Best year to buy used: 1960 (91.1% pass). Weakest: 1961 (89.2%).

88%90%92%1959: 89.6% pass (96 tests)1960: 91.1% pass (157 tests)1961: 89.2% pass (74 tests)195919601961

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.