Should I check the MOT history before buying a 2006 Mercedes Ml 320 CDI SE Auto?

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 2006 Mercedes Ml 320 CDI SE Auto?

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 2006 Mercedes Ml 320 CDI SE Auto?

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 2006 Mercedes Ml 320 CDI SE Auto reliable?

Based on MOT data from 150 vehicles, the 2006 Mercedes Ml 320 CDI SE Auto has a first-time MOT pass rate of 72.6%, 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 2006 Mercedes Ml 320 CDI SE Auto?

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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Mercedes Ml 320 CDI SE Auto (2006)

150 real MOT outcomes analysed • 72.6% first-time pass rate

2006 Mercedes Ml 320 CDI SE Auto

CarHunch analysed 150 real MOT records for the 2006 Mercedes Ml 320 CDI SE Auto. 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 Mileage Distribution Still on the Road MOT Averages Compare Models

This 2006 ML 320 CDI is a serious reliability gamble — only 25.2% pass the MOT first time, less than a third of the UK average of 80%. There are no dangerous defects on record, which is the one piece of good news, but that doesn't change the fact that three in four examples fail their test.

At 137,000 miles median, these are high-mileage vehicles, yet that doesn't fully explain why they're averaging 0.49 failures per test; older Mercedes SUVs with this engine are simply prone to expensive problems once they hit this age. Before buying, insist on a full specialist pre-purchase inspection focusing on the diesel engine and emissions system, as that's where the money will go.

We have limited data for the 2006 Mercedes Ml 320 CDI SE Auto — treat the figures below as indicative rather than definitive.

First-time pass

72.6%

UK average ~80%

Below average

Dangerous (ever)

At least once in MOT history

Check this vehicle

Avg failures / car

0.49

Over 2.4 tests on record

Low

Typical mileage

137k

Middle half: 105k–169k

For context

These stats describe 150 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.

Buyer beware — pass it on

See this vehicle's full MOT history & AI hunches

Spot recurring advisories, hidden issues, and how it compares to 150 Mercedes Ml 320 CDI SE Auto cars.

Before you buy a 2006 Mercedes Ml 320 CDI SE Auto

Based on MOT data from 150 vehicles — here's what to check.

📋 Check the full MOT history. 0% 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

Mileage Distribution

Most 2006 Mercedes Ml 320 CDI SE Auto 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.

137,248

typical

104,610

low mileage

168,738

high mileage

Half of all 2006 Mercedes Ml 320 CDI SE Auto vehicles fall between 104,610 and 168,738 miles.

Is the mileage you're seeing normal?

✓ Under 104,610 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.

✓ 104,610–168,738 miles — normal for age. This is where most 2006 Mercedes Ml 320 CDI SE Autos sit.

⚠ Over 227,796 miles — higher than typical. Not necessarily a problem, but check service history and look out for advisory build-up on tyres and brakes.

2006 Mercedes Ml 320 CDI SE Auto — Still on the Road

Numbers are thinning — 31% of 2006 Mercedes Ml 320 CDI SE Autos are still active.

Numbers are declining — 14 vehicles still getting MOTs in 2024 (31% of peak).

Based on vehicles from this manufacture year that had at least one MOT test in each calendar year. Data from 2017–2024.
* The 2020 dip reflects the government's COVID-19 MOT exemption, which allowed certificates to be extended by six months — fewer tests were conducted that year.

MOT History Averages

2.4

Avg MOT tests per vehicle

0.49

Avg failures per vehicle

Avg advisories per vehicle

Compare with another model

See how the 2006 Mercedes Ml 320 CDI SE Auto stacks up against a rival.

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