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

KTM 620

609cc Petrol Class 2
#3975 of 5426 overall #183 of 230 KTMs #2519 of 2787 other bikes
77.5%
first-time pass rate
13.5%
failed outright
9,890
median miles at test
436
MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2006–2011

The 620's first-time pass rate has risen 1.8 points since 2006, 75.6% to 77.4%.

66%75%83%2006: 75.6% pass (45 tests)2007: 80.5% pass (41 tests)2009: 68.6% pass (35 tests)2011: 77.4% pass (31 tests)20062011

Pass rate by mileage

how the 620's first-time pass rate falls with the odometer · class average 84.9%

A low-mileage 620 passes first time 81.0% of the time; by 20k that's 67.7%.

65%74%84%0k: 81.0% pass (184 tests)10k: 74.3% pass (113 tests)20k: 67.7% pass (31 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 620

failure defects by component group · advisories excluded
Component group Share of defects Defects % of defects
lighting and signalling
68 43
steering and suspension
23 14.6
lamps and reflectors
20 12.7
brakes
15 9.5
reg plates and vin
10 6.3
tyres and wheels
9 5.7
drive system
4 2.5
suspension
3 1.9
fuel and exhaust
3 1.9
structure and attachments
3 1.9

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 620 beats 1 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 620.

Pass rate by registration year

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

Best year to buy used: 1998 (78.3% pass). Weakest: 1996 (77.2%).

76%78%79%1996: 77.2% pass (57 tests)1998: 78.3% pass (138 tests)19961998

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.