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Kia K4 Valuation: 140 used car listings analysed

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New Kia K4 GT-Line 114 HP (83 kW) 2026 White Hatchback

(2026) Kia K4 GT-Line 114 HP

£22,990

Fair price

You save £810

HD1 6AP West Yorkshire, West Yorkshire

130 g CO2/km comb. - 114 HP (83 kW) - 5.7 Mpg

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(2026) Kia K4 GT-Line 114 HP

£24,999

Fair price

Estimated price £23,863

CV6 4DG West Midlands, West Midlands

130 g CO2/km comb. - 114 HP (83 kW) - 5.7 Mpg

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Used Kia K4 GT-Line 114 HP (83 kW) 2026 Hatchback

(2026) Kia K4 GT-Line 114 HP

£23,108

Good price

You save £2,192

B93 8NJ Dorridge, West Midlands

130 g CO2/km comb. - 114 HP (83 kW) - 5.7 Mpg

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Used Kia K4 GT-Line S 115 HP (84 kW) 2026 White Hatchback

(2026) Kia K4 GT-Line S 115 HP

£24,395

Fair price

You save £305

OX26 6PZ Oxfordshire, Oxfordshire

132 g CO2/km comb. - 115 HP (84 kW) - 5.6 Mpg

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Used (2025) Kia K4 GT-Line 114 HP | A bit pricey

- 1.0T-GDi 115 48V GT-Line 5dr DCT

2025
0 miles
Trim level: GT-Line
1.0L Petrol
Hatchback
Automatic
114 HP (83 kW)
CO2 emissions: 130 g CO2/km comb.
5.7 mpg
Details

A bit pricey

£25,995

£30,665

CB225DG

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-14%

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New (2026) Kia K4 114 HP | A bit pricey

- 1.0T-GDi 115 48V Pure 5dr

2026
10 miles
1.2L Petrol
Hatchback
Manual
114 HP (83 kW)
CO2 emissions: 129 g CO2/km comb.
5.7 mpg
Details

A bit pricey

£23,495

£27,415

CB7 4DT Cambridgeshire, Cambridgeshire

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1 / 4

Used (2026) Kia K4 GT-Line S | A bit pricey

Gt Line S Hatchback

2026
6,323 miles
Trim level: GT-Line S
1.6L Petrol
Hatchback
Automatic
Details

A bit pricey

£27,850

Exchange and Mart

Essex, Essex

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1 / 4

New (2026) Kia K4 GT-Line S 113 HP | A bit pricey

1.0T-GDi 115 48V GT-Line S 5dr

2026
913 miles
Trim level: GT-Line S
1.0L Petrol
Hatchback
Automatic
113 HP (83 kW)
CO2 emissions: 132 g CO2/km comb.
48.7 mpg
Details

A bit pricey

£26,998

Dealer

KA8 9RT South Ayrshire, Ayrshire And Arran

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(2026) Kia K4 GT-Line S 115 HP

£23,295

Good price

You save £1,505

RG2 0ST Berkshire, Berkshire

132 g CO2/km comb. - 115 HP (84 kW) - 5.6 Mpg

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Used Kia K4 GT-Line S 179 HP (131 kW) 2026 Blue Hatchback

(2026) Kia K4 GT-Line S 179 HP

£28,995

Fair price

Estimated price £27,684

OX26 6PZ Oxfordshire, Oxfordshire

152 g CO2/km comb. - 179 HP (131 kW) - 6.6 Mpg

Carwow

Used Kia K4 GT-Line 150 HP (110 kW) 2026 Blue Hatchback

(2026) Kia K4 GT-Line 150 HP

£23,490

Fair price

You save £110

B73 6SP Birmingham, West Midlands

148 g CO2/km comb. - 150 HP (110 kW) - 6.4 Mpg

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New Kia K4 GT-Line S 179 HP (131 kW) 2026 Blue Hatchback

(2026) Kia K4 GT-Line S 179 HP

£28,995

Fair price

Estimated price £28,133

RG2 0ST Berkshire, Berkshire

152 g CO2/km comb. - 179 HP (131 kW) - 6.6 Mpg

1 / 4

Used (2026) Kia K4 GT-Line S 114 HP | Expensive

1.0T-GDi 115 48V GT-Line S 5dr

2026
5,832 miles
Trim level: GT-Line S
1.0L Petrol
Hatchback
Automatic
114 HP (83 kW)
CO2 emissions: 132 g CO2/km comb.
5.8 mpg
Details

Expensive

£26,295

OX26 6PZ Oxfordshire, Oxfordshire

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Used (2026) Kia K4 GT-Line S 115 HP | Expensive

1.0T-GDI 115 48V DCT GT-Line S

2026
3,800 miles
Trim level: GT-Line S
1.0L Petrol
Hatchback
Automatic
115 HP (84 kW)
5.6 mpg
Details

Expensive

£28,999

Dealer

London, London

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Used (2026) Kia K4 GT-Line 150 HP | Rare vehicle

2026 GT-Line 1.0T-GDi 115 48V

2026
5,422 miles
Trim level: GT-Line
1.0L Petrol
Hatchback
Automatic
150 HP (110 kW)
CO2 emissions: 130 g CO2/km comb.
5.7 mpg
Details

£22,988

£23,499

Rare vehicle

S81 7AE Nottinghamshire, Nottinghamshire

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New (2026) Kia K4 GT-Line S 114 HP

- 1.0T-GDi 115 48V GT-Line S 5dr

2026
0 miles
Trim level: GT-Line S
1.0L Petrol
Hatchback
Automatic
114 HP (83 kW)
CO2 emissions: 132 g CO2/km comb.
5.8 mpg
Details

£31,995

£32,995

Not evaluated

CB225DG

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Used (2026) Kia K4 113 HP

Pure Mhev Auto

2026
4,376 miles
1.0L Petrol
Hatchback
Automatic
113 HP (83 kW)
CO2 emissions: 129 g CO2/km comb.
5.6 mpg
Details

£19,284

£22,850

Not evaluated

Dealer

NP19 4QR Newport, Gwent

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-5%

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Used (2026) Kia K4 GT-Line

Gt-line Mhev Auto Hatchback

2026
7,732 miles
Trim level: GT-Line
Petrol
Hatchback
Automatic
Details

£23,200

£24,450

Not evaluated

Exchange and Mart

Hertfordshire, Hertfordshire

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Used Kia K4 GT-Line 115 HP (84 kW) 2026 Gold Hatchback

(2026) Kia K4 GT-Line 115 HP

£22,537

Super price

You save £3,263

EH11 4AS Sighthill, Edinburgh

130 g CO2/km comb. - 115 HP (84 kW) - 5.6 Mpg

Carwow

Used Kia K4 GT-Line 150 HP (110 kW) 2026 Black Hatchback

(2026) Kia K4 GT-Line 150 HP

£22,999

Fair price

You save £1,001

S402WG Derbyshire, Derbyshire

130 g CO2/km comb. - 150 HP (110 kW) - 6.4 Mpg

Carwow

Used Kia K4 GT-Line S 115 HP (84 kW) 2026 Blue Hatchback

(2026) Kia K4 GT-Line S 115 HP

£24,566

Fair price

You save £534

S81 7AE Nottinghamshire, Nottinghamshire

132 g CO2/km comb. - 115 HP (84 kW) - 5.8 Mpg

Carwow

(2026) Kia K4 GT-Line 150 HP

£22,999

Fair price

You save £1,001

S60 1TU Parkgate, South Yorkshire

148 g CO2/km comb. - 150 HP (110 kW) - 6.4 Mpg

New (2026) Kia K4 GT-Line S | Rare vehicle

1.0T-GDi 115 48V GT-Line S 5dr

2026
800 miles
Trim level: GT-Line S
1.0L Petrol
Hatchback
Automatic
Details

£24,995

Rare vehicle

Dealer

London, London

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Used (2026) Kia K4 GT-Line S 177 HP | Rare vehicle

1.0T-GDi 115 48V GT-Line S 5dr

Jul 2026
3,048 miles
Trim level: GT-Line S
1.0L Petrol
Hatchback
Automatic
177 HP (130 kW)
CO2 emissions: 152 g CO2/km comb.
5.6 mpg
Details

£33,789

Rare vehicle

Dealer

Maidstone, Kent

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1 / 1

Used (2026) Kia K4 GT-Line S | Rare vehicle

1.0 T-GDi DCT MHEV GT-LINE S

2026
5,000 miles
Trim level: GT-Line S
1.0L Petrol
Sedan
Automatic
Details

£27,995

Rare vehicle

Dealer

London, London

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1 / 1

Used (2026) Kia K4 GT-Line 115 HP | Good price

1.0T-GDi 115 48V GT-Line 5dr

2026
1,789 miles
Trim level: GT-Line
1.0L Petrol
Hatchback
Automatic
115 HP (84 kW)
5.6 mpg
Details

Good price

£23,500

Dealer

London, London

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Used (2026) Kia K4 GT-Line S 177 HP | Rare vehicle

1.6 T-GDi GT-Line S DCT Euro 6

2026
7,125 miles
Trim level: GT-Line S
1.0L Petrol
Automatic
177 HP (130 kW)
Details

£26,395

£29,995

Rare vehicle

Dealer

RG14 7HT Berkshire, Berkshire

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Used Kia K4 GT-Line S 114 HP (83 kW) 2026 Hatchback

(2026) Kia K4 GT-Line S 114 HP

£25,492

Fair price

Estimated price £25,269

CM14 4NS Essex, Essex

132 g CO2/km comb. - 114 HP (83 kW) - 5.8 Mpg

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Used Kia K4 GT-Line S 115 HP (84 kW) 2026 Black Hatchback

(2026) Kia K4 GT-Line S 115 HP

£25,390

Fair price

Estimated price £25,230

SO30 2WA Hedge End, Hampshire

132 g CO2/km comb. - 115 HP (84 kW) - 5.6 Mpg

Carwow

Used Kia K4 GT-Line S 114 HP (83 kW) 2026 White Hatchback

(2026) Kia K4 GT-Line S 114 HP

£24,640

Fair price

You save £760

S71 1EZ South Yorkshire, South Yorkshire

132 g CO2/km comb. - 114 HP (83 kW) - 49.0 Mpg

Carwow

New Kia K4 GT-Line S 114 HP (83 kW) 2026 Hatchback

(2026) Kia K4 GT-Line S 114 HP

£24,995

Fair price

You save £505

RG2 0ST Berkshire, Berkshire

132 g CO2/km comb. - 114 HP (83 kW) - 5.8 Mpg

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