Should I check the MOT history before buying a 2021 KTM 390 Adventure 21?

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 2021 KTM 390 Adventure 21?

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 2021 KTM 390 Adventure 21?

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 2021 KTM 390 Adventure 21 reliable?

Based on MOT data from 172 vehicles, the 2021 KTM 390 Adventure 21 has a first-time MOT pass rate of 95.8%, 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 2021 KTM 390 Adventure 21?

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 390 Adventure 21 (2021)

172 real MOT outcomes analysed • 95.8% first-time pass rate

2021 KTM 390 Adventure 21

CarHunch analysed 172 real MOT records for the 2021 KTM 390 Adventure 21. 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 MOT Averages Compare Models

The 2021 KTM 390 Adventure performs slightly above the UK average with an 82.5% first-time pass rate compared to 80% nationally, and dangerous defects are rare at just 4.1% of vehicles tested. This is a genuinely reliable machine for its class, with virtually no structural issues—only 0.09 failures per vehicle on average.

At 6,235 miles on average, these bikes are still relatively low-mileage examples, which explains the clean test results. The 0.4 advisories per vehicle suggest minor wear rather than systemic problems, so when shopping for a used 390 Adventure, focus your inspection on routine service history and fluid condition rather than worrying about major mechanical faults.

We have limited data for the 2021 KTM 390 Adventure 21 — treat the figures below as indicative rather than definitive.

First-time pass

95.8%

UK average ~80%

Better than average

Dangerous (ever)

4.1%

At least once in MOT history

Check this vehicle

Avg failures / car

0.09

Over 1.7 tests on record

Low

Typical mileage

Middle half: 3k–8k

For context

These stats describe 172 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.

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See this vehicle's full MOT history & AI hunches

Spot recurring advisories, hidden issues, and how it compares to 172 KTM 390 Adventure 21 cars.

Before you buy a 2021 KTM 390 Adventure 21

Based on MOT data from 172 vehicles — here's what to check.

📋 Check the full MOT history. 4.1% 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%)	170	95.8%	0.09

Mileage Distribution

Most 2021 KTM 390 Adventure 21 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.

5,455

typical

3,227

low mileage

8,020

high mileage

Half of all 2021 KTM 390 Adventure 21 vehicles fall between 3,227 and 8,020 miles.

Is the mileage you're seeing normal?

✓ Under 3,227 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.

✓ 3,227–8,020 miles — normal for age. This is where most 2021 KTM 390 Adventure 21s sit.

⚠ Over 10,827 miles — higher than typical. Not necessarily a problem, but check service history and look out for advisory build-up on tyres and brakes.

MOT History Averages

1.7

Avg MOT tests per vehicle

0.09

Avg failures per vehicle

0.4

Avg advisories per vehicle

Other model years — KTM 390 Adventure 21: All 390 Adventure 21 years → Which year to buy? →

2022

Or browse all models: KTM →

Compare with another model

See how the 2021 KTM 390 Adventure 21 stacks up against a rival.

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