Should I check the MOT history before buying a 2018 BMW 5 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 2018 BMW 5 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 2018 BMW 5 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.

How many 2018 BMW 5 Series vehicles have had dangerous defects recorded?

25% 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 5 Series reliable?

Based on MOT data from 19,603 vehicles, the 2018 BMW 5 Series has a first-time MOT pass rate of 90.1%, 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 2018 BMW 5 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 5 Series (2018)

19,603 real MOT outcomes analysed • 90.1% first-time pass rate

2018 BMW 5 Series

CarHunch analysed 19,603 real MOT records for the 2018 BMW 5 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 2018 BMW 5 Series passes its MOT first time at 90.1%, well above the UK average of 80%, but the concerning figure is that 25.4% of these vehicles have recorded a dangerous defect at some point—nearly one in four. Diesel and petrol variants both perform reliably (90.6% and 91.5% pass rates respectively), though the hybrid-electric model dips to 88.2%, suggesting slightly more fragility in that powertrain.

These cars are running at a sensible 50,763 miles median for their age, which keeps repair risk manageable. The real issue lies in the advisory count: 3.7 per vehicle is notably high, pointing to wear in non-critical areas like suspension, lights, and trim—the kind of niggles that are cheap to fix but signal a car that needs regular attention rather than neglect-proof motoring.

The 2018 BMW 5 Series has a decent first-time pass rate (90.1%), 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

90.1%

UK average ~80%

Better than average

Dangerous (ever)

25.4%

At least once in MOT history

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Avg failures / car

0.64

Over 5.6 tests on record

Moderate

Typical mileage

51k

Middle half: 39k–66k

For context

✅ Good baseline reliability. A 90.1% 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 3.7 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 19,603 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

See this vehicle's full MOT history & AI hunches

Spot recurring advisories, hidden issues, and how it compares to 19,603 BMW 5 Series cars.

Before you buy a 2018 BMW 5 Series

Based on MOT data from 19,603 vehicles — here's what to check.

📋 Check the full MOT history. 25.4% 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 (52%)	10,171	90.7%	0.61
Hybrid Electric (Clean) (29%)	5,609	88.2%	0.73
Petrol (20%)	3,823	91.5%	0.56

Colour Breakdown

Based on 118,673 BMW 5 Series vehicles registered in the UK — across all years. From DVLA registration records.

Blue 25.4%

30,117

Black 25%

29,708

Grey 18.5%

21,995

White 11.6%

13,821

Silver 10.8%

12,865

Green 4.1%

4,869

Red 3.4%

4,014

Bronze 0.4%

444

Beige 0.2%

266

Brown 0.2%

259

Purple 0.2%

183

Gold 0.1%

132

Mileage Distribution

Most 2018 BMW 5 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.

50,763

typical

38,572

low mileage

66,407

high mileage

Half of all 2018 BMW 5 Series vehicles fall between 38,572 and 66,407 miles.

Is the mileage you're seeing normal?

✓ Under 38,572 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.

✓ 38,572–66,407 miles — normal for age. This is where most 2018 BMW 5 Seriess sit.

⚠ Over 89,649 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 5 Series — Still on the Road

Almost all 2018 BMW 5 Seriess are still on the road.

Strong survival — 16,970 vehicles still getting MOTs in 2025, 90% of the peak.

Based on vehicles from this manufacture year that had at least one MOT test in each calendar year. Data from 2021–2025.

MOT History Averages

5.6

Avg MOT tests per vehicle

0.64

Avg failures per vehicle

3.7

Avg advisories per vehicle

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Watch for defects — worth knowing