Should I check the MOT history before buying a 2020 BMW M135i Xdrive 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 M135i Xdrive 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 M135i Xdrive 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 M135i Xdrive Auto reliable?

Based on MOT data from 3,456 vehicles, the 2020 BMW M135i Xdrive Auto has a first-time MOT pass rate of 92.8%, 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 2020 BMW M135i Xdrive 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 M135i Xdrive Auto (2020)

3,456 real MOT outcomes analysed • 92.8% first-time pass rate

2020 BMW M135i Xdrive Auto

CarHunch analysed 3,456 real MOT records for the 2020 BMW M135i Xdrive 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 2020 BMW M135i xDrive is a solid performer on MOT, passing first time at 91.2%—well ahead of the UK's 80% average—with only 15% of cars developing dangerous defects over their test history, suggesting this is a genuinely dependable hot hatch. Petrol models hold a 91.0% pass rate consistent with the overall cohort, so fuel type isn't a differentiator here.

At 28,269 miles median for a four-year-old car, these are relatively low-mileage examples, which tracks with the strong pass performance; the average 0.31 failures per vehicle is unusually clean for a performance-oriented BMW. When issues do crop up, they're typically minor (2.0 advisories per car on average), but check the service history and suspension carefully on any used example, as these turbocharged engines reward meticulous maintenance.

The 2020 BMW M135i Xdrive Auto passes its MOT first time at roughly the UK average rate (92.8%) — solid but worth checking this vehicle's history carefully.

⚠️ Around 1 in 8 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

92.8%

UK average ~80%

Better than average

Dangerous (ever)

15%

At least once in MOT history

Check this vehicle

Avg failures / car

0.31

Over 3.5 tests on record

Low

Typical mileage

28k

Middle half: 22k–36k

For context

✅ Good baseline reliability. A 92.8% first-time pass rate puts this well above the UK average — it's a well-sorted vehicle in this age bracket.

🔧 Expect consumable spend. An average of 2 advisories per vehicle tells you wear items (tyres, brakes) get flagged regularly. Budget for them — they're not surprises.

🔍 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 3,456 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.

Average reliability — agree?

See this vehicle's full MOT history & AI hunches

Spot recurring advisories, hidden issues, and how it compares to 3,456 BMW M135i Xdrive Auto cars.

Before you buy a 2020 BMW M135i Xdrive Auto

Based on MOT data from 3,456 vehicles — here's what to check.

📋 Check the full MOT history. 15% 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
Petrol (98%)	3,391	92.7%	0.32
Other (2%)	65	100%	0

Colour Breakdown

Based on 15,172 BMW M135i Xdrive Auto vehicles registered in the UK — across all years. From DVLA registration records.

Grey 40%

6,074

Black 19.8%

2,998

White 17.9%

2,720

Blue 16.9%

2,564

Red 4%

614

Green 0.5%

Purple 0.3%

Yellow 0.3%

Orange 0.2%

Mileage Distribution

Most 2020 BMW M135i Xdrive 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.

28,269

typical

21,959

low mileage

35,916

high mileage

Half of all 2020 BMW M135i Xdrive Auto vehicles fall between 21,959 and 35,916 miles.

Is the mileage you're seeing normal?

✓ Under 21,959 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.

✓ 21,959–35,916 miles — normal for age. This is where most 2020 BMW M135i Xdrive Autos sit.

⚠ Over 48,486 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 M135i Xdrive Auto — Still on the Road

Almost all 2020 BMW M135i Xdrive Autos are still on the road.

Strong survival — 3,244 vehicles still getting MOTs in 2025, 99% 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

3.5

Avg MOT tests per vehicle

0.31

Avg failures per vehicle

Avg advisories per vehicle

Other model years — BMW M135i Xdrive Auto: All M135i Xdrive Auto years → Which year to buy? →

2019 2021 2022 2023 2024

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Average reliability — agree?