Kia Proceed GT Line Isg (2021)
2021 Kia Proceed GT Line Isg
CarHunch analysed 731 real MOT records for the 2021 Kia Proceed GT Line Isg. This breakdown of actual test outcomes — pass rates, defect profiles, mileage data — isn't published anywhere else.
The 2021 Kia Proceed GT-Line ISG is noticeably more reliable than the UK average, with an 89.8% first-time pass rate against the national 80%, and only 11.5% of vehicles ever recording a dangerous defect—well below the concern threshold. Petrol variants, which make up the vast majority of this cohort, maintain that same strong 89.5% pass rate.
At 30,423 miles median for a three-year-old car, these are sensibly driven examples, and the low average of 0.29 failures per vehicle confirms this is a fundamentally sound car that doesn't punish owners with major repairs. Most will pick up minor advisory items (2.2 on average), but if you're shopping for one, a pre-purchase inspection focused on suspension wear and fluid leaks will catch the small stuff before it becomes expensive.
What to check before buying a 2021 Kia Proceed GT Line Isg
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 Kia Proceed GT Line Isg
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Pass Rate by Fuel Type
| Fuel type | Vehicles | Pass rate | Avg failures |
|---|---|---|---|
| Petrol (97%) | 712 | 89.6% | 0.3 |
| Other (3%) | 19 | 100% | 0 |
Mileage Distribution
Most 2021 Kia Proceed GT Line Isg 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 2021 Kia Proceed GT Line Isg vehicles fall between 23,660 and 40,424 miles.
2021 Kia Proceed GT Line Isg — Still on the Road
Strong survival — 707 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 2023–2025.
MOT History Averages
Found a specific Kia Proceed GT Line Isg?
Enter the reg to see its individual MOT history, AI Hunches, and how it compares to this cohort.