Should I check the MOT history before buying a 2018 BMW I8?

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 I8?

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 I8?

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 2018 BMW I8 reliable?

Based on MOT data from 498 vehicles, the 2018 BMW I8 has a first-time MOT pass rate of 92.3%, 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 I8?

The most frequently recorded MOT issues on the 2018 BMW I8 are: Offside Rear Tyre worn close to legal limit/worn on edge (47.4% of vehicles), Nearside Rear Tyre worn close to legal limit/worn on edge (47.2% of vehicles), Nearside Front Tyre worn close to legal limit/worn on edge (38.7% 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 I8?

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 I8 (2018)

498 real MOT outcomes analysed • 92.3% first-time pass rate

2018 BMW I8

CarHunch analysed 498 real MOT records for the 2018 BMW I8. Real test outcomes — pass rates, defect profiles, mileage data — from verified DVLA records. Updated as new MOTs are recorded.
Which year to buy? →

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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

Moderate sample. 498 vehicles on record. Figures are indicative — the specific vehicle's history matters more than these averages.

The 2018 BMW I8's first-time pass rate of 77.9% is slightly below the UK average of 80%, suggesting these cars are a touch less reliable than typical for their age—though the difference is modest. One in six owners (16.3%) have encountered a dangerous defect at some point, which is worth factoring into your decision.

At just over 23,000 miles on average, these vehicles are well below what you'd expect for a six-year-old car, indicating many are cherished weekend drivers rather than daily workhorses. The low failure rate of 0.38 per vehicle is genuinely encouraging, but the 2.1 advisories per test suggest some preventative maintenance is flagged; when evaluating a specific I8, get a pre-purchase inspection done and ask the seller for their maintenance history, particularly around the hybrid system.

The 2018 BMW I8 passes its MOT first time at roughly the UK average rate (92.3%) — 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

92.3%

UK average ~80%

Better than average

Dangerous (ever)

16.3%

At least once in MOT history

Check this vehicle

Avg failures / car

0.38

Over 4.5 tests on record

Low

Typical mileage

21k

Middle half: 15k–31k

For context

✅ Good baseline reliability. A 92.3% 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 2.1 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 498 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?

What tends to go wrong

Across 498 vehicles — figures show how many had each issue flagged at least once in their MOT history.

Tyre wear 47.4%

Offside Rear Tyre worn close to legal limit/worn on edge · Nearside 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 10.9%

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 8.1%

COVID-19 6 MONTH EXTENSION · Front Registration plate does not conform to the specified requirements · Rear Registration plate does not conform to the specified requirements · …

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 498 BMW I8 cars.

Before you buy a 2018 BMW I8

Based on MOT data from 498 vehicles — here's what to check.

📋 Check the full MOT history. 16.3% 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
Hybrid Electric (Clean) (99%)	492	92.3%	0.38

Colour Breakdown

Based on 3,093 BMW I8 vehicles registered in the UK — across all years. From DVLA registration records.

Grey 40.2%

1,244

White 30.6%

947

Silver 10.3%

319

Blue 9.7%

299

Orange 4.3%

134

Black 1.9%

Red 1.4%

Green 0.5%

Yellow 0.4%

Purple 0.4%

Multi-colour 0.2%

Mileage Distribution

Most 2018 BMW I8 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.

21,072

typical

14,666

low mileage

31,116

high mileage

Half of all 2018 BMW I8 vehicles fall between 14,666 and 31,116 miles.

Is the mileage you're seeing normal?

✓ Under 14,666 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.

✓ 14,666–31,116 miles — normal for age. This is where most 2018 BMW I8s sit.

⚠ Over 42,006 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 I8 — Still on the Road

Most 2018 BMW I8s are still being driven.

Strong survival — 336 vehicles still getting MOTs in 2025, 88% 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

4.5

Avg MOT tests per vehicle

0.38

Avg failures per vehicle

2.1

Avg advisories per vehicle

Other model years — BMW I8: All I8 years → Which year to buy? →

2014 2015 2016 2017 2019

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Compare with another model

See how the 2018 BMW I8 stacks up against a rival.

Average reliability — agree?