KTM 640 DUKE II

625cc Petrol Class 2

#3459 of 5426 overall #146 of 230 KTMs #166 of 205 naked bikes

80.6%

first-time pass rate

9.9%

failed outright

8,889

median miles at test

4,182

MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2006–2025

The 640 DUKE II's first-time pass rate has held steady since 2006 (84.3% → 84.0%).

Pass rate by mileage

how the 640 DUKE II's first-time pass rate falls with the odometer · class average 84.9%

A low-mileage 640 DUKE II passes first time 83.3% of the time; by 30k that's 65.1%.

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 640 DUKE II

failure defects by component group · advisories excluded

Component group	Defects	% of defects	vs all bikes
lighting and signalling	313	37	1.2×
tyres and wheels	93	11	1.0×
steering and suspension	89	10.5	0.6×
lamps and reflectors	88	10.4	0.8×
brakes	79	9.3	0.4×
reg plates and vin	61	7.2	1.8×
drive system	57	6.7	1.5×
fuel and exhaust	32	3.8	0.9×
suspension	18	2.1	0.6×
structure and attachments	16	1.9	0.5×

Defects recorded against failed normal tests, 2005–2025, grouped by DVSA inspection section. One test can record multiple defects. "vs all bikes" is how often this model's tests record a defect in the group, as a multiple of the all-bike rate.

How rivals compare

same type, similar capacity, high test volume

On first-time pass rate the 640 DUKE II beats 1 of its 4 closest rivals (HONDA CB500, TRIUMPH STREET TRIPLE, HONDA CB600 HORNET).

HONDA CB500 83.3% pass · 105k tests TRIUMPH STREET TRIPLE 87.7% pass · 37.7k tests HONDA CB600 HORNET 78.6% pass · 26.4k tests TRIUMPH STREET TRIPLE R 87.7% pass · 20.6k 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 640 DUKE II.

Pass rate by registration year

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

Best year to buy used: 2006 (82.9% pass). Weakest: 2000 (74.0%).

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.

KTM 640 DUKE II FAQ

answers computed from the data above · terms in the glossary

Is the KTM 640 DUKE II reliable?

The KTM 640 DUKE II is less reliable than average for its class: 80.6% of its 4,182 MOT tests (2005–2025) passed first time, against a class average of 84.9%. That ranks it #3459 of 5426 models.

What does a 640 DUKE II fail its MOT on most?

lighting and signalling — 37% of all defects recorded against failed 640 DUKE II tests.

What is the best year of 640 DUKE II to buy used?

By first-time pass rate, 2006-registered examples do best (82.9%) and 2000 worst (74.0%). Condition and history still trump the year.

How many miles will a 640 DUKE II last?

The median 640 DUKE II shows 8,889 miles at test, and examples around 30k miles still pass 65.1% of the time — mileage alone rarely kills one.