Should I check the MOT history before buying a 2020 BMW 6 Series?

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 6 Series?

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 6 Series?

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 6 Series reliable?

Based on MOT data from 228 vehicles, the 2020 BMW 6 Series has a first-time MOT pass rate of 91.5%, 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 6 Series?

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 6 Series (2020)

228 real MOT outcomes analysed • 91.5% first-time pass rate

2020 BMW 6 Series

CarHunch analysed 228 real MOT records for the 2020 BMW 6 Series. 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 2020 BMW 6 Series is unusually reliable, with a 91.5% first-time pass rate that significantly outperforms the UK average of 80%—diesel variants hold steady at 91%, so fuel choice makes little difference here. Only 11% of these cars have ever recorded a dangerous defect, which is reassuringly low and suggests owners aren't inheriting serious safety risks.

At 37,265 miles median, these vehicles are running relatively light for four-year-old cars, and the 0.37 average failures per test tells you major mechanical issues are uncommon. Before buying, request full service history and have an independent inspection focus on the 2.1 advisories per car average—typically routine maintenance items—to confirm proper upkeep has been maintained.

We have limited data for the 2020 BMW 6 Series — treat the figures below as indicative rather than definitive.

⚠️ About 1 in 12 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

91.5%

UK average ~80%

Better than average

Dangerous (ever)

11%

At least once in MOT history

Check this vehicle

Avg failures / car

0.37

Over 3.6 tests on record

Low

Typical mileage

37k

Middle half: 30k–46k

For context

These stats describe 228 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 228 BMW 6 Series cars.

Before you buy a 2020 BMW 6 Series

Based on MOT data from 228 vehicles — here's what to check.

📋 Check the full MOT history. 11% 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 (83%)	190	91%	0.4

Colour Breakdown

Based on 6,431 BMW 6 Series vehicles registered in the UK — across all years. From DVLA registration records.

Black 31.1%

2,002

Grey 21.3%

1,369

White 18.7%

1,203

Blue 16.6%

1,069

Silver 5.6%

357

Red 4.8%

307

Bronze 0.6%

Brown 0.5%

Green 0.4%

Beige 0.2%

Yellow 0.1%

Gold 0.1%

Mileage Distribution

Most 2020 BMW 6 Series 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.

37,265

typical

30,350

low mileage

46,024

high mileage

Half of all 2020 BMW 6 Series vehicles fall between 30,350 and 46,024 miles.

Is the mileage you're seeing normal?

✓ Under 30,350 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.

✓ 30,350–46,024 miles — normal for age. This is where most 2020 BMW 6 Seriess sit.

⚠ Over 62,132 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 6 Series — Still on the Road

Almost all 2020 BMW 6 Seriess are still on the road.

Strong survival — 218 vehicles still getting MOTs in 2025, 97% 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

3.6

Avg MOT tests per vehicle

0.37

Avg failures per vehicle

2.1

Avg advisories per vehicle

Other model years — BMW 6 Series: All 6 Series years → Which year to buy? →

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Compare with another model

See how the 2020 BMW 6 Series stacks up against a rival.

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