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

KTM 390

373cc Petrol Class 2
#2089 of 5426 overall #73 of 230 KTMs #1277 of 2787 other bikes
86.4%
first-time pass rate
7.2%
failed outright
5,598
median miles at test
3,737
MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2017–2025

The 390's first-time pass rate has risen 3.5 points since 2017, 83.3% to 86.8%.

82%86%89%2017: 83.3% pass (234 tests)2018: 85.7% pass (342 tests)2019: 86.4% pass (487 tests)2020: 86.9% pass (457 tests)2021: 86.1% pass (541 tests)2022: 87.7% pass (520 tests)2023: 86.6% pass (479 tests)2024: 85.9% pass (333 tests)2025: 86.8% pass (334 tests)20172025

Pass rate by mileage

how the 390's first-time pass rate falls with the odometer · class average 84.9%

A low-mileage 390 passes first time 87.8% of the time; by 20k that's 78.9%.

77%83%90%0k: 87.8% pass (2,868 tests)10k: 82.0% pass (717 tests)20k: 78.9% pass (109 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 390

failure defects by component group · advisories excluded
Component group Share of defects Defects % of defects vs all bikes
lamps and reflectors
130 26.7 1.7×
structure and attachments
103 21.1 3.0×
brakes
96 19.7 0.5×
tyres
48 9.9 1.9×
suspension
42 8.6 1.4×
lighting and signalling
18 3.7 0.1×
Identification of the vehicle
18 3.7 2.1×
steering
16 3.3 1.0×
reg plates and vin
8 1.6 0.3×
audible warning (Horn)
8 1.6 1.2×

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 390 beats 4 of its 4 closest rivals (SUZUKI AN400, SUZUKI DR-Z400S, YAMAHA RD350).

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 390.

Pass rate by registration year

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

Best year to buy used: 2017 (92.8% pass). Weakest: 2013 (83.6%).

82%88%95%2013: 83.6% pass (219 tests)2014: 85.7% pass (1,206 tests)2015: 86.0% pass (1,016 tests)2016: 87.2% pass (1,159 tests)2017: 92.8% pass (111 tests)201320152017

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 390 FAQ

answers computed from the data above · terms in the glossary

Is the KTM 390 reliable?

The KTM 390 is about average for its class: 86.4% of its 3,737 MOT tests (2005–2025) passed first time, against a class average of 84.9%. That ranks it #2089 of 5426 models.

What does a 390 fail its MOT on most?

lamps and reflectors — 27% of all defects recorded against failed 390 tests.

What is the best year of 390 to buy used?

By first-time pass rate, 2017-registered examples do best (92.8%) and 2013 worst (83.6%). Condition and history still trump the year.

How many miles will a 390 last?

The median 390 shows 5,598 miles at test, and examples around 20k miles still pass 78.9% of the time — mileage alone rarely kills one.