Should I check the MOT history before buying a 2018 BMW 520d 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 2018 BMW 520d 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 2018 BMW 520d 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 2018 BMW 520d SE Auto reliable?

Based on MOT data from 205 vehicles, the 2018 BMW 520d SE Auto 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 2018 BMW 520d 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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BMW 520d SE Auto (2018)

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

2018 BMW 520d SE Auto

CarHunch analysed 205 real MOT records for the 2018 BMW 520d 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 Colour Breakdown Compare Models

The 2018 BMW 520D SE AUTO is a serious reliability concern, with just 26.6% passing their MOT first time against the UK average of 80%—this is a stark three-to-one failure rate that should give any prospective buyer pause. The good news is that dangerous defects are absent from this cohort, so safety-critical failures aren't the problem here.

At 70,197 miles average, these cars are running typical mileage for their age, yet they're still racking up faults at test time, suggesting mechanical or electrical issues beyond normal wear. With an average CarHunch score of just 35, this model demands a thorough pre-purchase inspection by a BMW-specialist mechanic, and you should budget for repair costs if you proceed.

We have limited data for the 2018 BMW 520d SE Auto — treat the figures below as indicative rather than definitive.

First-time pass

95.8%

UK average ~80%

Better than average

Dangerous (ever)

At least once in MOT history

Check this vehicle

Avg failures / car

0.05

Over 1.5 tests on record

Low

Typical mileage

69k

Middle half: 51k–84k

For context

These stats describe 205 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 205 BMW 520d SE Auto cars.

Before you buy a 2018 BMW 520d SE Auto

Based on MOT data from 205 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

Colour Breakdown

Based on 4,390 BMW 520d SE Auto vehicles registered in the UK — across all years. From DVLA registration records.

Black 29.5%

1,293

Grey 25%

1,098

Blue 17.4%

765

Silver 13.9%

609

White 12.1%

532

Brown 1%

Green 0.4%

Bronze 0.3%

Red 0.3%

Gold 0.1%

Mileage Distribution

Most 2018 BMW 520d 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.

68,742

typical

51,335

low mileage

83,963

high mileage

Half of all 2018 BMW 520d SE Auto vehicles fall between 51,335 and 83,963 miles.

Is the mileage you're seeing normal?

✓ Under 51,335 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.

✓ 51,335–83,963 miles — normal for age. This is where most 2018 BMW 520d SE Autos sit.

⚠ Over 113,350 miles — higher than typical. Not necessarily a problem, but check service history and look out for advisory build-up on tyres and brakes.

2018 BMW 520d SE Auto — Still on the Road

Numbers are thinning — 54% of 2018 BMW 520d SE Autos are still active.

22 vehicles still getting MOTs in 2025 — 54% of the peak remain.

Based on vehicles from this manufacture year that had at least one MOT test in each calendar year. Data from 2022–2025.

MOT History Averages

1.5

Avg MOT tests per vehicle

0.05

Avg failures per vehicle

Avg advisories per vehicle

Other model years — BMW 520d SE Auto: All 520d SE Auto years → Which year to buy? →

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