Should I check the MOT history before buying a 2020 BMW 520d SE MHEV 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 2020 BMW 520d SE MHEV 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 2020 BMW 520d SE MHEV 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 2020 BMW 520d SE MHEV Auto reliable?

Based on MOT data from 338 vehicles, the 2020 BMW 520d SE MHEV Auto has a first-time MOT pass rate of 93.1%, 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 2020 BMW 520d SE MHEV 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 MHEV Auto (2020)

338 real MOT outcomes analysed • 93.1% first-time pass rate

2020 BMW 520d SE MHEV Auto

CarHunch analysed 338 real MOT records for the 2020 BMW 520d SE MHEV 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

Moderate sample. 338 vehicles on record. Figures are indicative — the specific vehicle's history matters more than these averages.

This 2020 BMW 520D SE MHEV passes its MOT at 80.5%, which matches the UK average dead on, and only 5.3% have ever recorded a dangerous defect—well below typical concern levels. The mild hybrid diesel variant makes up the vast majority of this cohort (316 of 338 cars), though its 79.2% pass rate sits slightly below the overall figure, suggesting the electrified drivetrain doesn't measurably harm reliability.

These cars are running at 44,647 miles on average, which is reasonable for a four-year-old model, and they're averaging just 0.25 failures per test—meaning most owners encounter straightforward wear items rather than structural problems. Focus your pre-purchase inspection on the advisory list (averaging 1.4 per car) to understand what's typically wearing: that'll tell you whether you're looking at routine maintenance or early component degradation.

The 2020 BMW 520d SE MHEV Auto passes its MOT first time more often than most UK vehicles (93.1% vs ~80% average) — and when it does fail, it's usually something minor and cheap to fix.

⚠️ Around 1 in 20 of these vehicles have had a dangerous MOT failure at some point — usually tyres or brakes, and often a one-off issue rather than a persistent problem. The group stats won't tell you which one you're looking at.

First-time pass

93.1%

UK average ~80%

Better than average

Dangerous (ever)

5.3%

At least once in MOT history

Check this vehicle

Avg failures / car

0.25

Over 3 tests on record

Low

Typical mileage

41k

Middle half: 28k–57k

For context

✅ Good baseline reliability. A 93.1% first-time pass rate puts this well above the UK average — it's a well-sorted vehicle in this age bracket.

🔍 The dangerous defect figure is real. Most are one-off tyre failures or brake issues — not structural problems. But it's exactly why checking the individual vehicle's history is essential, not optional.

These stats describe 338 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 338 BMW 520d SE MHEV Auto cars.

Before you buy a 2020 BMW 520d SE MHEV Auto

Based on MOT data from 338 vehicles — here's what to check.

📋 Check the full MOT history. 5.3% 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
Electric Diesel (93%)	316	92.7%	0.26

Colour Breakdown

Based on 650 BMW 520d SE MHEV Auto vehicles registered in the UK — across all years. From DVLA registration records.

Blue 31.8%

207

Grey 20.9%

136

Black 20.5%

133

White 20%

130

Silver 6%

Red 0.8%

Mileage Distribution

Most 2020 BMW 520d SE MHEV 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.

40,564

typical

28,118

low mileage

57,234

high mileage

Half of all 2020 BMW 520d SE MHEV Auto vehicles fall between 28,118 and 57,234 miles.

Is the mileage you're seeing normal?

✓ Under 28,118 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.

✓ 28,118–57,234 miles — normal for age. This is where most 2020 BMW 520d SE MHEV Autos sit.

⚠ Over 77,265 miles — higher than typical. Not necessarily a problem, but check service history and look out for advisory build-up on tyres and brakes.

2020 BMW 520d SE MHEV Auto — Still on the Road

Almost all 2020 BMW 520d SE MHEV Autos are still on the road.

Strong survival — 250 vehicles still getting MOTs in 2025, 94% of the peak.

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

Avg MOT tests per vehicle

0.25

Avg failures per vehicle

1.4

Avg advisories per vehicle

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

2021

Or browse all models: BMW →

Compare with another model

See how the 2020 BMW 520d SE MHEV Auto stacks up against a rival.

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