Kia

Kia Proceed GT Line Isg (2021)

731 real MOT outcomes analysed • 91.2% first-time pass rate

2021 Kia Proceed GT Line Isg

CarHunch analysed 731 real MOT records for the 2021 Kia Proceed GT Line Isg. 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 Check a Specific Reg Buyer's Checklist Pass Rate by Fuel Mileage Distribution Still on the Road MOT Averages Colour Breakdown Compare Models

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.

The 2021 Kia Proceed GT Line Isg passes its MOT first time more often than most UK vehicles (91.2% vs ~80% average) — and when it does fail, it's usually something minor and cheap to fix.

⚠️ About 1 in 12 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
91.2%
UK average ~80%
Better than average
Dangerous (ever)
11.5%
At least once in MOT history
Check this vehicle
Avg failures / car
0.29
Over 2.4 tests on record
Low
Typical mileage
30k
Middle half: 24k–40k
For context
Good baseline reliability. A 91.2% 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 2.2 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 731 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.

A solid choice — agree?

See this vehicle's full MOT history & AI hunches

Spot recurring advisories, hidden issues, and how it compares to 731 Kia Proceed GT Line Isg cars.

UK

Before you buy a 2021 Kia Proceed GT Line Isg

Based on MOT data from 731 vehicles — here's what to check.

  • 📋 Check the full MOT history. 11.5% 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 (97%) 712 91% 0.3

Colour Breakdown

Based on 5,375 Kia Proceed GT Line Isg vehicles registered in the UK — across all years. From DVLA registration records.

Blue 20.5%
1,102
Black 19%
1,022
Grey 17.3%
932
White 15.6%
841
Red 15.1%
812
Orange 11.6%
625
Silver 0.8%
41

Mileage Distribution

Most 2021 Kia Proceed GT Line Isg 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.

30,423
typical
23,660
low mileage
40,424
high mileage

Half of all 2021 Kia Proceed GT Line Isg vehicles fall between 23,660 and 40,424 miles.

Is the mileage you're seeing normal?
Under 23,660 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.
23,660–40,424 miles — normal for age. This is where most 2021 Kia Proceed GT Line Isgs sit.
Over 54,572 miles — higher than typical. Not necessarily a problem, but check service history and look out for advisory build-up on tyres and brakes.

2021 Kia Proceed GT Line Isg — Still on the Road

Almost all 2021 Kia Proceed GT Line Isgs are still on the road.

Strong survival — 707 vehicles still getting MOTs in 2025, 100% of the peak.

57 707 2023 2025

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

2.4
Avg MOT tests per vehicle
0.29
Avg failures per vehicle
2.2
Avg advisories per vehicle
Other model years — Kia Proceed GT Line Isg: All Proceed GT Line Isg years → Which year to buy? →
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