Should I check the MOT history before buying a 2018 KTM 125 Duke 18?

Yes. Look for recurring advisories — slow-building issues like corrosion or brake wear patterns show up years before they become failures. A full MOT history analysis will highlight patterns that a single test result won't reveal.

What corrosion should I look for when inspecting a 2018 KTM 125 Duke 18?

Check brake pipes, sills, subframes, and chassis legs. Surface rust is normal at this age; structural rust is a serious problem that is expensive to fix and can fail an MOT.

How are tyres and brakes typically on a 2018 KTM 125 Duke 18?

Tyres and brakes are the most common advisory items on vehicles of this age. Budget for replacement if they are near the limit, and factor this into your offer price.

Is the 2018 KTM 125 Duke 18 reliable?

Based on MOT data from 549 vehicles, the 2018 KTM 125 Duke 18 has a first-time MOT pass rate of 83.9%, indicating generally reliable for its class. Always check the full MOT history of any specific vehicle before buying.

Do I need an HPI check when buying a 2018 KTM 125 Duke 18?

Yes. The MOT history will not show outstanding finance, insurance write-offs, or stolen status. An HPI check covers these areas and should be part of any used car purchase.

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KTM 125 Duke 18 (2018)

549 real MOT outcomes analysed • 83.9% first-time pass rate

2018 KTM 125 Duke 18

CarHunch analysed 549 real MOT records for the 2018 KTM 125 Duke 18. Real test outcomes — pass rates, defect profiles, mileage data — from verified DVLA records. Updated as new MOTs are recorded.
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AI Analysis Reliability Overview Check a Specific Reg Buyer's Checklist Pass Rate by Fuel Mileage Distribution Still on the Road MOT Averages Colour Breakdown Compare Models

The 2018 KTM 125 Duke falls notably short of the UK average, with a first-time pass rate of 67.3% against the national 80%, suggesting this sportsbike cohort has genuine reliability concerns. Roughly one in nine owners (10.8%) have encountered a dangerous defect during their vehicle's life, which is a material risk for a bike in this category.

These machines are running relatively low mileage for their age—averaging 9,029 miles—yet still accumulating an average of 0.61 failures and 2.2 advisories per test, pointing to mechanical fragility rather than wear-and-tear. If you're considering one, expect to budget for brake work, suspension and electrical gremlins; prioritise a pre-purchase inspection by a KTM-experienced mechanic and obtain its full service history.

The 2018 KTM 125 Duke 18 passes its MOT first time at roughly the UK average rate (83.9%) — solid but worth checking this vehicle's history carefully.

⚠️ About 1 in 12 of these vehicles have had a dangerous MOT failure at some point — usually tyres or brakes, and often a one-off issue rather than a persistent problem. The group stats won't tell you which one you're looking at.

First-time pass

83.9%

UK average ~80%

Around average

Dangerous (ever)

10.8%

At least once in MOT history

Check this vehicle

Avg failures / car

0.61

Over 3.3 tests on record

Moderate

Typical mileage

Middle half: 5k–12k

For context

🔧 Average reliability. Passes at roughly the UK rate — not a standout, not a problem vehicle. Individual history makes all the difference.

🔧 Expect consumable spend. An average of 2.2 advisories per vehicle tells you wear items (tyres, brakes) get flagged regularly. Budget for them — they're not surprises.

🔍 The dangerous defect figure is real. Most are one-off tyre failures or brake issues — not structural problems. But it's exactly why checking the individual vehicle's history is essential, not optional.

These stats describe 549 vehicles as a group. The specific vehicle you're looking at could be the one good example or the one outlier. Run its registration to find out.

Average reliability — agree?

See this vehicle's full MOT history & AI hunches

Spot recurring advisories, hidden issues, and how it compares to 549 KTM 125 Duke 18 cars.

Before you buy a 2018 KTM 125 Duke 18

Based on MOT data from 549 vehicles — here's what to check.

📋 Check the full MOT history. 10.8% of these vehicles have had a dangerous defect recorded - recurring advisories often signal problems years before they become failures.
Search the reg on CarHunch for the full MOT history, reliability stats and a free AI-powered analysis of that exact vehicle.
🔍 Brake pipes, sills and subframes are the key areas on a vehicle this age — structural rust is hard to spot without getting underneath. A mechanic will check all of this before you commit, and give you a concrete basis to negotiate on price. Inspection →
📄 Outstanding finance, insurance write-offs and clocking won't appear in the MOT records — a dedicated history check covers all of this. Our link gets you 20% off automatically. History Get 20% off via CarHunch

Pass Rate by Fuel Type

Fuel type	Vehicles	Pass rate	Avg failures
Petrol (99%)	546	83.9%	0.61

Colour Breakdown

Based on 728 KTM 125 Duke 18 vehicles registered in the UK — across all years. From DVLA registration records.

Orange 52.7%

384

White 46.4%

338

Black 0.8%

Mileage Distribution

Most 2018 KTM 125 Duke 18 vehicles sit in the blue band. If the vehicle you're looking at is outside it, it's either unusually low or high mileage for its age.

8,276

typical

4,806

low mileage

11,767

high mileage

Half of all 2018 KTM 125 Duke 18 vehicles fall between 4,806 and 11,767 miles.

Is the mileage you're seeing normal?

✓ Under 4,806 miles — lower than most. Could be great, or could be a vehicle that rarely moved. Check test frequency and mileage progression in the MOT history.

✓ 4,806–11,767 miles — normal for age. This is where most 2018 KTM 125 Duke 18s sit.

⚠ Over 15,885 miles — higher than typical. Not necessarily a problem, but check service history and look out for advisory build-up on tyres and brakes.

2018 KTM 125 Duke 18 — Still on the Road

Most 2018 KTM 125 Duke 18s are still being driven.

230 vehicles still getting MOTs in 2025 — 75% of the peak remain.

Based on vehicles from this manufacture year that had at least one MOT test in each calendar year. Data from 2021–2025.

MOT History Averages

3.3

Avg MOT tests per vehicle

0.61

Avg failures per vehicle

2.2

Avg advisories per vehicle

Other model years — KTM 125 Duke 18: All 125 Duke 18 years → Which year to buy? →

2019

Or browse all models: KTM →

Compare with another model

See how the 2018 KTM 125 Duke 18 stacks up against a rival.

Average reliability — agree?