Mini Countryman (2018)
2018 Mini Countryman
CarHunch analysed 13,739 real MOT records for the 2018 Mini Countryman. This breakdown of actual test outcomes — pass rates, defect profiles, mileage data — isn't published anywhere else.
The 2018 MINI Countryman is substantially more reliable than the UK average, with a 90.3% first-time pass rate compared to 80%, and petrol variants edge slightly ahead at 90.8% versus diesel and hybrid models at 89–89.3%. However, 15.5% of these vehicles have experienced a dangerous defect at some point, which is worth factoring into your decision.
At just over 31,000 miles median mileage for a six-year-old car, these are relatively well-used but not heavily abused examples. The average of 0.65 failures per test suggests minor wear items are the main culprit, while 4.1 advisories per vehicle indicates routine maintenance needs—before buying, request full service history and budget for scheduled items like brake fluid and cabin filters.
Petrol vs Diesel
Pass rate difference of 1.5 percentage points — worth knowing if you're choosing between the two.
What to check before buying a 2018 Mini Countryman
Practical pre-purchase checks for this age and model.
- 📋 Check the full MOT history. Look for recurring advisories — slow-building issues like corrosion or brake wear patterns show up years before they become failures. Enter the reg below for a full AI analysis.
- 🔍 Inspect for corrosion in person. Brake pipes, sills, subframes, and chassis legs. Surface rust is normal at this age; structural rust is a serious problem that's expensive to fix and can fail an MOT.
- 🛞 Check tyres and brakes. The most common advisory items at this age. Budget for replacement if they're near the limit — factor this into your offer price.
- 📄 Run an HPI check. The MOT history won't show outstanding finance, insurance write-offs, or stolen status — an HPI check will.
Before you buy a Mini Countryman
MOT history is one piece of the puzzle. These checks can reveal what CarHunch can't.
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Pass Rate by Fuel Type
| Fuel type | Vehicles | Pass rate | Avg failures |
|---|---|---|---|
| Petrol (66%) | 9,060 | 90.8% | 0.61 |
| Diesel (18%) | 2,492 | 89.3% | 0.72 |
| Hybrid Electric (Clean) (16%) | 2,187 | 89.2% | 0.71 |
Mileage Distribution
Most 2018 Mini Countryman vehicles sit in the blue band. If the car you're looking at is outside it, it's either unusually low or high mileage for its age.
Half of all 2018 Mini Countryman vehicles fall between 23,204 and 40,534 miles.
2018 Mini Countryman — Still on the Road
Strong survival — 13,276 vehicles still getting MOTs in 2025, 100% 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
Most Common MOT Issues — 2018 Mini Countryman
Based on actual MOT test records for this model. Percentage shows how often each item appears across all vehicles in this cohort.
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40.3%
Nearside Front Tyre worn close to legal limit/worn on edge
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37%
Offside Front Tyre worn close to legal limit/worn on edge
-
26.3%
Offside Rear Tyre slightly damaged/cracking or perishing
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25.1%
Nearside Rear Tyre slightly damaged/cracking or perishing
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18%
Rear Brake pad(s) wearing thin
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16.5%
Front Brake pad(s) wearing thin
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15.5%
Nearside Rear Child Seat fitted not allowing full inspection of adult belt ()
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13.3%
Nearside Rear Tyre worn close to legal limit/worn on edge
Data covers a 3-year window centred on 2018. Counts include advisories and failures.
Found a specific Mini Countryman?
Enter the reg to see its individual MOT history, AI Hunches, and how it compares to this cohort.