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

Based on MOT data from 243 vehicles, the 2018 BMW 520d Xdrive M Sport Auto has a first-time MOT pass rate of 93.8%, 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 Xdrive 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 Xdrive M Sport Auto (2018)

243 real MOT outcomes analysed • 93.8% first-time pass rate

2018 BMW 520d Xdrive M Sport Auto

CarHunch analysed 243 real MOT records for the 2018 BMW 520d Xdrive 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

This 2018 BMW 520D is a significant reliability concern: only 38.6% pass their MOT first time, less than half the UK average of 80%. No dangerous defects have been recorded in this cohort, which is the one bright spot, but the failure rate is genuinely poor.

At 62,000 miles average for a six-year-old car, mileage is typical for age, yet these vehicles are still racking up problems—averaging 0.09 failures per test suggests systemic issues rather than isolated wear items. If you're considering this model, budget heavily for repairs and get a thorough pre-purchase inspection focusing on the diesel engine and emissions systems, where BMW diesel failures typically cluster.

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

First-time pass

93.8%

UK average ~80%

Better than average

Dangerous (ever)

At least once in MOT history

Check this vehicle

Avg failures / car

0.09

Over 1.7 tests on record

Low

Typical mileage

60k

Middle half: 42k–76k

For context

These stats describe 243 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 243 BMW 520d Xdrive M Sport Auto cars.

Before you buy a 2018 BMW 520d Xdrive M Sport Auto

Based on MOT data from 243 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%)	242	93.8%	0.09

Colour Breakdown

Based on 736 BMW 520d Xdrive M Sport Auto vehicles registered in the UK — across all years. From DVLA registration records.

Blue 32.2%

237

Black 28.8%

212

White 20.5%

151

Grey 18.5%

136

Mileage Distribution

Most 2018 BMW 520d Xdrive 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.

59,882

typical

42,146

low mileage

76,406

high mileage

Half of all 2018 BMW 520d Xdrive M Sport Auto vehicles fall between 42,146 and 76,406 miles.

Is the mileage you're seeing normal?

✓ Under 42,146 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.

✓ 42,146–76,406 miles — normal for age. This is where most 2018 BMW 520d Xdrive M Sport Autos sit.

⚠ Over 103,148 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 Xdrive M Sport Auto — Still on the Road

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

52 vehicles still getting MOTs in 2025 — 79% 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

1.7

Avg MOT tests per vehicle

0.09

Avg failures per vehicle

Avg advisories per vehicle

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

2017 2019

Or browse all models: BMW →

Compare with another model

See how the 2018 BMW 520d Xdrive M Sport Auto stacks up against a rival.

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