Mini

Mini Cooper (2018)

30,968 real MOT outcomes analysed • 90.8% first-time pass rate

2018 Mini Cooper

CarHunch analysed 30,968 real MOT records for the 2018 Mini Cooper. 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 Petrol vs Diesel Buyer's Checklist Pass Rate by Fuel Mileage Distribution Still on the Road MOT Averages Colour Breakdown Compare Models

The 2018 MINI COOPER punches well above the UK average with a 90.3% first-time pass rate, 10 points higher than the national norm—a strong sign of overall reliability. However, one in five of these cars (18.1%) have suffered a dangerous defect at some point, which is a meaningful concern for a buyer, though petrol and diesel versions perform similarly (90.3% and 88.6% respectively).

At 28,217 miles median mileage, these five-year-old cars are running slightly low for their age, suggesting either low-mileage examples or careful ownership. The average car picks up 0.61 failures per test but accumulates 3.7 minor advisories, pointing to niggling wear issues rather than systemic problems—budget for routine maintenance and have any pre-purchase example inspected for suspension and electrical gremlins, the usual weak spots on this generation.

The 2018 Mini Cooper passes its MOT first time at roughly the UK average rate (90.8%) — 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
90.8%
UK average ~80%
Better than average
Dangerous (ever)
18.1%
At least once in MOT history
Check this vehicle
Avg failures / car
0.61
Over 5.7 tests on record
Moderate
Typical mileage
28k
Middle half: 20k–37k
For context
Good baseline reliability. A 90.8% 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 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 30,968 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 30,968 vehicles — figures show how many had each issue flagged at least once in their MOT history.

Tyre wear 36.5%
Nearside Front Tyre worn close to legal limit/worn on edge · Offside Front Tyre worn close to legal limit/worn on edge · Offside Rear Tyre slightly damaged/cracking or perishing · …
Budget for a full set — on a vehicle this age, tyres are expected consumables. An inspection will confirm how much is left.
Brake wear 12.2%
Front Brake pad(s) wearing thin · Rear Brake pad(s) wearing thin · Front Brake disc worn, pitted or scored, but not seriously weakened
Ask the seller when brakes were last serviced. If they don't know, factor in the cost.
Other issues 10.8%
Windscreen damaged but not adversely affecting driver's view · COVID-19 6 MONTH EXTENSION · 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 30,968 Mini Cooper cars.

UK

Petrol vs Diesel

Pass rate difference of 2.2 percentage points — worth knowing if you're choosing between the two.

90.8%
Petrol
28,955 vehicles
88.6%
Diesel
1,679 vehicles

Before you buy a 2018 Mini Cooper

Based on MOT data from 30,968 vehicles — here's what to check.

  • 📋 Check the full MOT history. 18.1% 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 ClickMechanic
  • 📄 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 carVertical Get 20% off via CarHunch

Pass Rate by Fuel Type

Fuel type Vehicles Pass rate Avg failures
Petrol (93%) 28,955 90.8% 0.61
Diesel (5%) 1,679 88.6% 0.77
Other (1%) 334 99.2% 0.03

Colour Breakdown

Based on 238,458 Mini Cooper vehicles registered in the UK — across all years. From DVLA registration records.

Blue 16.7%
39,831
White 16.1%
38,335
Grey 15.5%
37,038
Black 14.9%
35,615
Silver 14.1%
33,740
Red 10.9%
26,028
Green 5.4%
12,971
Orange 3.8%
8,949
Turquoise 1.6%
3,770
Yellow 0.4%
1,002
Brown 0.4%
950
Maroon 0.1%
229

Mileage Distribution

Most 2018 Mini Cooper 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.

28,217
typical
20,238
low mileage
37,291
high mileage

Half of all 2018 Mini Cooper vehicles fall between 20,238 and 37,291 miles.

Is the mileage you're seeing normal?
Under 20,238 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.
20,238–37,291 miles — normal for age. This is where most 2018 Mini Coopers sit.
Over 50,342 miles — higher than typical. Not necessarily a problem, but check service history and look out for advisory build-up on tyres and brakes.

2018 Mini Cooper — Still on the Road

Almost all 2018 Mini Coopers are still on the road.

Strong survival — 29,740 vehicles still getting MOTs in 2025, 100% of the peak.

29,555 29,740 2021 2025

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

5.7
Avg MOT tests per vehicle
0.61
Avg failures per vehicle
3.7
Avg advisories per vehicle
Other model years — Mini Cooper: All Cooper years → Which year to buy? →
2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2019 2020 2021 2022 2023

Or browse all models: Mini →

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Compare with another model

See how the 2018 Mini Cooper stacks up against a rival.

Average reliability — agree?