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

Based on MOT data from 1,414 vehicles, the 2018 BMW 520d M Sport Auto has a first-time MOT pass rate of 96%, 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 M Sport 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 M Sport Auto (2018)

1,414 real MOT outcomes analysed • 96% first-time pass rate

2018 BMW 520d M Sport Auto

CarHunch analysed 1,414 real MOT records for the 2018 BMW 520d M Sport 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 Pass Rate by Fuel Mileage Distribution Still on the Road MOT Averages Colour Breakdown Compare Models

The 2018 BMW 520D M Sport Auto is a serious reliability concern, with just 31.5% passing MOT first time against the UK average of 80%—meaning nearly seven in ten will need work before passing. No dangerous defects have been recorded, but the catastrophically low pass rate suggests systemic issues with this specific configuration that make it genuinely risky for a buyer.

At 61,000 miles average, these cars are running low mileage for their age, yet the vast majority still fail their MOT, indicating the problems aren't wear-related but rather design or maintenance defects inherent to the model. Before considering this car, have a pre-purchase inspection by a BMW-specialist mechanic focus on the common failure points affecting this cohort—don't rely on the seller's MOT history alone.

The 2018 BMW 520d M Sport Auto passes its MOT first time more often than most UK vehicles (96% vs ~80% average) — and when it does fail, it's usually something minor and cheap to fix.

First-time pass

96%

UK average ~80%

Better than average

Dangerous (ever)

At least once in MOT history

Check this vehicle

Avg failures / car

0.05

Over 1.4 tests on record

Low

Typical mileage

60k

Middle half: 47k–75k

For context

✅ Good baseline reliability. A 96% first-time pass rate puts this well above the UK average — it's a well-sorted vehicle in this age bracket.

These stats describe 1,414 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 1,414 BMW 520d M Sport Auto cars.

Before you buy a 2018 BMW 520d M Sport Auto

Based on MOT data from 1,414 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

Pass Rate by Fuel Type

Fuel type	Vehicles	Pass rate	Avg failures
Diesel (100%)	1,409	96%	0.05

Colour Breakdown

Based on 11,099 BMW 520d M Sport Auto vehicles registered in the UK — across all years. From DVLA registration records.

Black 29.1%

3,229

Grey 25.7%

2,856

White 23.7%

2,629

Blue 13.8%

1,533

Silver 7.3%

808

Red 0.3%

Yellow 0.1%

Mileage Distribution

Most 2018 BMW 520d M Sport 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.

60,058

typical

46,846

low mileage

75,282

high mileage

Half of all 2018 BMW 520d M Sport Auto vehicles fall between 46,846 and 75,282 miles.

Is the mileage you're seeing normal?

✓ Under 46,846 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.

✓ 46,846–75,282 miles — normal for age. This is where most 2018 BMW 520d M Sport Autos sit.

⚠ Over 101,630 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 M Sport Auto — Still on the Road

Most 2018 BMW 520d M Sport Autos are still being driven.

213 vehicles still getting MOTs in 2025 — 78% 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

1.4

Avg MOT tests per vehicle

0.05

Avg failures per vehicle

Avg advisories per vehicle

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

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