Should I check the MOT history before buying a 2018 BMW 640?

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 640?

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 640?

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.

How many 2018 BMW 640 vehicles have had dangerous defects recorded?

51% of these vehicles have had a dangerous defect recorded. Search the registration on CarHunch — the full MOT history will show exactly what was flagged and whether it was resolved.

Is the 2018 BMW 640 reliable?

Based on MOT data from 646 vehicles, the 2018 BMW 640 has a first-time MOT pass rate of 86.2%, indicating generally reliable for its class. Always check the full MOT history of any specific vehicle before buying.

What are common problems with the 2018 BMW 640?

The most frequently recorded MOT issues on the 2018 BMW 640 are: Nearside Rear Tyre worn close to legal limit/worn on edge (34.8% of vehicles), Offside Rear Tyre worn close to legal limit/worn on edge (32.4% of vehicles), Rear Brake pad(s) wearing thin (12.8% of vehicles). These figures are based on actual MOT test records — search a specific registration on CarHunch to see its individual history.

Do I need an HPI check when buying a 2018 BMW 640?

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 640 (2018)

646 real MOT outcomes analysed • 86.2% first-time pass rate

2018 BMW 640

CarHunch analysed 646 real MOT records for the 2018 BMW 640. 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 Common Issues 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 640 passes its first MOT 6.2 percentage points above the UK average at 86.2%, which is a solid result—but the serious concern here is that just over half of these cars (51.4%) have recorded a dangerous defect at some point, well above what you'd typically see. This is a luxury performance car, and that elevated dangerous defect rate suggests buyers need to budget for potential safety-critical repairs.

At 38,910 miles median, these cars are relatively low-mileage for their age, which partly explains the decent pass rate, yet they still average nearly one failure per test and almost three advisories. Before purchasing, get a full pre-buy inspection focusing on brake and suspension components—common areas where the 640 racks up both failures and dangerous flags—and factor in specialist servicing costs typical of high-performance BMWs.

The 2018 BMW 640 has a decent first-time pass rate (86.2%), but a higher-than-average share of vehicles have had serious defects recorded — the individual vehicle's history matters a lot here.

⚠️ Over 1 in 5 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

86.2%

UK average ~80%

Around average

Dangerous (ever)

51.4%

At least once in MOT history

Check this vehicle

Avg failures / car

0.96

Over 6.1 tests on record

Moderate

Typical mileage

39k

Middle half: 28k–52k

For context

✅ Good baseline reliability. A 86.2% 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 2.9 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 646 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.

Watch for defects — worth knowing

What tends to go wrong

Across 646 vehicles — figures show how many had each issue flagged at least once in their MOT history.

Tyre wear 34.8%

Nearside Rear Tyre worn close to legal limit/worn on edge · Offside Rear Tyre worn close to legal limit/worn on edge · Nearside Front Tyre worn close to legal limit/worn on edge · …

Budget for a full set — on a vehicle this age, tyres are expected consumables. An inspection will confirm how much is left.

Brake wear 12.8%

Rear Brake pad(s) wearing thin · Front Brake pad(s) wearing thin

Ask the seller when brakes were last serviced. If they don't know, factor in the cost.

Other issues 7.8%

COVID-19 6 MONTH EXTENSION · Windscreen damaged but not adversely affecting driver's view · Nearside Rear Child Seat fitted not allowing full inspection of adult belt

Data covers a 3-year window centred on 2018.

See this vehicle's full MOT history & AI hunches

Spot recurring advisories, hidden issues, and how it compares to 646 BMW 640 cars.

Before you buy a 2018 BMW 640

Based on MOT data from 646 vehicles — here's what to check.

📋 Check the full MOT history. 51.4% 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 (94%)	606	86.2%	0.97

Colour Breakdown

Based on 11,694 BMW 640 vehicles registered in the UK — across all years. From DVLA registration records.

Black 38.9%

4,551

White 20.1%

2,351

Blue 15.1%

1,763

Grey 12.9%

1,505

Silver 6.5%

762

Red 4.6%

535

Yellow 0.6%

Bronze 0.6%

Brown 0.5%

Purple 0.1%

Green 0.1%

Gold 0.1%

Mileage Distribution

Most 2018 BMW 640 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.

38,910

typical

27,916

low mileage

52,393

high mileage

Half of all 2018 BMW 640 vehicles fall between 27,916 and 52,393 miles.

Is the mileage you're seeing normal?

✓ Under 27,916 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.

✓ 27,916–52,393 miles — normal for age. This is where most 2018 BMW 640s sit.

⚠ Over 70,730 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 640 — Still on the Road

Almost all 2018 BMW 640s are still on the road.

Strong survival — 592 vehicles still getting MOTs in 2025, 95% of the peak.

Based on vehicles from this manufacture year that had at least one MOT test in each calendar year. Data from 2020–2025.
* The 2020 dip reflects the government's COVID-19 MOT exemption, which allowed certificates to be extended by six months — fewer tests were conducted that year.

MOT History Averages

6.1

Avg MOT tests per vehicle

0.96

Avg failures per vehicle

2.9

Avg advisories per vehicle

Other model years — BMW 640: All 640 years → Which year to buy? →

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See how the 2018 BMW 640 stacks up against a rival.

Watch for defects — worth knowing