Seat Arona (2018)
2018 Seat Arona
CarHunch analysed 12,034 real MOT records for the 2018 Seat Arona. This breakdown of actual test outcomes — pass rates, defect profiles, mileage data — isn't published anywhere else.
The 2018 SEAT ARONA passes its MOT first time at 86.8%, which is a solid 6.8 points above the UK average, but nearly a quarter of these vehicles (23.9%) have recorded a dangerous defect at some point—a genuine concern for any buyer. Petrol versions hold a slight reliability edge over diesel, with pass rates of 87.4% versus 84.8% respectively.
These Aronas are running at sensible mileages for their age, with a median of just over 31,000 miles, and they rack up an average of 5.7 advisories per test, suggesting minor wear items rather than structural problems. Before purchase, ask the seller for a full MOT history and specifically check whether any dangerous defects were recorded and properly remedied, as that 23.9% figure is worth taking seriously.
Petrol vs Diesel
Pass rate difference of 2.6 percentage points — worth knowing if you're choosing between the two.
What to check before buying a 2018 Seat Arona
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.
- ⚠️ 23.9% of these vehicles have had a dangerous defect recorded. Enter the reg below — the full MOT history will show exactly what was flagged and whether it was resolved.
- 📄 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 Seat Arona
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 (79%) | 9,503 | 87.4% | 0.83 |
| Diesel (21%) | 2,531 | 84.8% | 0.99 |
Mileage Distribution
Most 2018 Seat Arona 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 Seat Arona vehicles fall between 23,234 and 40,443 miles.
2018 Seat Arona — Still on the Road
Strong survival — 11,631 vehicles still getting MOTs in 2025, 99% 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 Seat Arona
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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40.1%
Offside Rear Tyre slightly damaged/cracking or perishing
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38.5%
Nearside Rear Tyre slightly damaged/cracking or perishing
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32.5%
Front Brake pad(s) wearing thin
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30.5%
Offside Front Tyre worn close to legal limit/worn on edge
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29.7%
Nearside Front Tyre worn close to legal limit/worn on edge
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17.6%
Nearside Front Tyre slightly damaged/cracking or perishing
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17.4%
Offside Front Tyre slightly damaged/cracking or perishing
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16.4%
Nearside Rear Child Seat fitted not allowing full inspection of adult belt ()
Data covers a 3-year window centred on 2018. Counts include advisories and failures.
Found a specific Seat Arona?
Enter the reg to see its individual MOT history, AI Hunches, and how it compares to this cohort.