Kia K4 (GT-Line) • 38 cars with analysis

Market overview: Market price for Kia K4 (GT-Line): The average price is £26,778, ranging from £24,990 to £29,895. Among 38 cars with the GT-Line trim, AutoUncle identified 21 good deals listed below market value.

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Carwow

GT-Line

(2026) Kia K4 GT-Line 114 HP

£28,500

Fair price

You save £600

BN457ED

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

Carwow

GT-Line

(2026) Kia K4 GT-Line 150 HP

£26,495

Good price

You save £1,505

GU1 1RU Surrey, Surrey

148 g CO2/km comb. - 150 HP (110 kW) - 5.8 Mpg

Carwow

GT-Line

(2026) Kia K4 GT-Line 150 HP

£27,252

Fair price

You save £648

CO49TF

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

Carwow

GT-Line

(2026) Kia K4 GT-Line 150 HP

£27,100

Fair price

You save £800

RM6 6EE Greater London, London

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

Price checked by AutoUncle

Super price

Good price

Fair price

A bit pricey

Expensive

-7%

1 / 4

Used (2025) Kia K4 GT-Line 150 HP | Good price

1.6T-GDi 150 GT-Line 5dr DCT

Jan 2025
3,118 miles
Trim level: GT-Line
1.6L Petrol
Hatchback
Automatic
150 HP (110 kW)
CO2 emissions: 148 g CO2/km comb.
44 mpg
Details

Good price

£25,472

£27,500

WC1E 7DP Greater London, London

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Availability verified

-5%

1 / 4

Used (2026) Kia K4 GT-Line 150 HP | Good price

1.6T-GDi 150 GT-Line 5dr DCT

2026
4,784 miles
Trim level: GT-Line
1.6L Petrol
Hatchback
Automatic
150 HP (110 kW)
CO2 emissions: 148 g CO2/km comb.
5.8 mpg
Details

Good price

£26,495

£27,995

GU1 1RU Surrey, Surrey

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Availability verified

-4%

1 / 2

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

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

Jan 2026
4,805 miles
Trim level: GT-Line
1.0L Petrol
Hatchback
Automatic
115 HP (84 kW)
CO2 emissions: 130 g CO2/km comb.
5.6 mpg
Details

Super price

£25,695

£26,995

Dealer

WC1E 7DP Greater London, London

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-6%

1 / 3

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

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

2026
3,500 miles
Trim level: GT-Line
1.0L Petrol
Hatchback
Automatic
115 HP (84 kW)
5.6 mpg
Details

Super price

£26,199

£27,990

Motors.co.uk

LE10 0NF Leicestershire, Leicestershire

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Carwow

GT-Line

(2025) Kia K4 GT-Line 150 HP

£25,472

Good price

You save £2,328

WC1E 7DP Greater London, London

148 g CO2/km comb. - 150 HP (110 kW) - 44.0 Mpg

Carwow

GT-Line

(2026) Kia K4 GT-Line 150 HP

£26,949

Fair price

You save £951

HD16AP

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

Carwow

GT-Line

(2026) Kia K4 GT-Line 150 HP

£27,293

Fair price

You save £607

E12 5LH Greater London, London

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

Carwow Leasing

GT-Line

(2026) Kia K4 GT-Line 114 HP

£30,250

Fair price

Estimated price £29,020

IP24 1HT Norfolk, Norfolk

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

-2%

1 / 4

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

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

2026
3,082 miles
Trim level: GT-Line
1.0L Petrol
Hatchback
Automatic
115 HP (84 kW)
5.6 mpg
Details

Good price

£26,290

£27,000

Motors.co.uk

LS12 6HG Holbeck, West Yorkshire

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-20%

Used (2025) Kia K4 GT-Line 147 HP | Super price

1.6T-GDi 150 GT-Line 5dr DCT

Jan 2025
2,601 miles
Trim level: GT-Line
1.6L Petrol
Hatchback
Automatic
147 HP (108 kW)
CO2 emissions: 148 g CO2/km comb.
5.8 mpg
Details

Super price

£24,990

£31,345

Buyacar

Delivered to you

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1 / 4

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

1.0 T-GDi MHEV GT-Line DCT Euro 6

Mar 2026
2,000 miles
Trim level: GT-Line
1.0L Petrol
Hatchback
Automatic
115 HP (84 kW)
CO2 emissions: 130 g CO2/km comb.
49.5 mpg
Details

Super price

£25,549

£23,769

Motors.co.uk

FY4 2RP Blackpool, Lancashire

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1 / 4

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

1.0 T-GDi MHEV GT-Line DCT Euro 6

Mar 2026
2,500 miles
Trim level: GT-Line
1.0L Petrol
Hatchback
Automatic
115 HP (84 kW)
CO2 emissions: 130 g CO2/km comb.
5.6 mpg
Details

Super price

£25,475

£23,769

Motors.co.uk

FY4 2RP Blackpool, Lancashire

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-8%

1 / 3

Used (2026) Kia K4 GT-Line 147 HP | Good price

1.6T-GDi 150 GT-Line 5dr DCT

2026
2,999 miles
Trim level: GT-Line
1.6L Petrol
Hatchback
Automatic
147 HP (108 kW)
CO2 emissions: 148 g CO2/km comb.
Details

Good price

£25,558

£27,999

Motors.co.uk

NG31 7UH Lincolnshire, Lincolnshire

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-16%

1 / 2

Used (2026) Kia K4 GT-Line 147 HP | Super price

1.6T-GDi 150 GT-Line 5dr DCT

2026
2,000 miles
Trim level: GT-Line
1.6L Petrol
Hatchback
Automatic
147 HP (108 kW)
CO2 emissions: 148 g CO2/km comb.
5.8 mpg
Details

Super price

£24,989

£29,995

Buyacar

Delivered to you

View the car

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Verified Dealers

Carwow Leasing

GT-Line

(2025) Kia K4 GT-Line 114 HP

£28,995

Fair price

Estimated price £28,859

CB225DG

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

Carwow

GT-Line

(2026) Kia K4 GT-Line 150 HP

£27,850

Fair price

You save £150

CM179AQ

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

Carwow

GT-Line

(2025) Kia K4 GT-Line 114 HP

£27,600

Fair price

You save £1,300

SN14 6LJ Wiltshire, Wiltshire

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

Carwow

GT-Line S

(2025) Kia K4 GT-Line S 179 HP

£29,739

Good price

You save £1,761

WC1E 7DP Greater London, London

152 g CO2/km comb. - 179 HP (131 kW) - 6.8 Mpg

-9%

1 / 1

New (2026) Kia K4 GT-Line 147 HP | Good price

1.6T-GDi 150 GT-Line 5dr DCT

2026
10 miles
Trim level: GT-Line
1.6L Petrol
Hatchback
Automatic
147 HP (108 kW)
CO2 emissions: 148 g CO2/km comb.
5.8 mpg
Details

Good price

£26,000

£28,850

Dealer

NP19 4QR Newport, Gwent

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1 / 4

New (2026) Kia K4 GT-Line 115 HP | Super price

1.0 T-GDi MHEV GT-Line Hatchback

Mar 2026
1,095 miles
Trim level: GT-Line
1.0L Petrol
Hatchback
Automatic
115 HP (84 kW)
CO2 emissions: 130 g CO2/km comb.
5.6 mpg
Details

Super price

£26,084

£23,769

Motors.co.uk

FY4 2RP Blackpool, Lancashire

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New (2026) Kia K4 GT-Line 147 HP | Good price

1.6T-GDi 150 GT-Line 5dr DCT

2026
22 miles
Trim level: GT-Line
1.6L Petrol
Hatchback
Automatic
147 HP (108 kW)
CO2 emissions: 148 g CO2/km comb.
43.5 mpg
Details

Good price

£26,025

Motors.co.uk

SK1 Greater Manchester, Manchester

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

1.0 T-GDi MHEV GT-Line Hatchback

Mar 2026
3,000 miles
Trim level: GT-Line
1.0L Petrol
Hatchback
Automatic
115 HP (84 kW)
CO2 emissions: 130 g CO2/km comb.
5.6 mpg
Details

Super price

£25,975

£23,769

Dealer

FY4 2RP Blackpool, Lancashire

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1 / 4

New (2026) Kia K4 GT-Line 147 HP | Good price

1.6T-GDi 150 GT-Line 5dr DCT

2026
1,300 miles
Trim level: GT-Line
1.6L Petrol
Hatchback
Automatic
147 HP (108 kW)
CO2 emissions: 148 g CO2/km comb.
43.5 mpg
Details

Good price

£25,998

Dealer

L8 6PZ Merseyside, Merseyside

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-5%

1 / 4

Used (2026) Kia K4 GT-Line 147 HP | Good price

1.6 T-GDi GT-Line DCT Euro 6 (s/s)

2026
4,784 miles
Trim level: GT-Line
1.0L Petrol
Automatic
147 HP (108 kW)
Details

Good price

£26,495

£27,995

Dealer

GU1 1RU Surrey, Surrey

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New

1 / 3

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

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

2026
5,000 miles
Trim level: GT-Line
1.0L Petrol
Hatchback
Automatic
115 HP (84 kW)
5.6 mpg
Details

Good price

£26,973

Motors.co.uk

LE10 0NF Leicestershire, Leicestershire

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New

1 / 1

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

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

2026
2,000 miles
Trim level: GT-Line
1.0L Petrol
Hatchback
Automatic
115 HP (84 kW)
5.6 mpg
Details

Good price

£27,480

Motors.co.uk

LE4 7SJ Leicester, Leicestershire

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New

1 / 3

New (2026) Kia K4 GT-Line 115 HP | Super price

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

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

Super price

£25,830

Motors.co.uk

LN11 0HQ Lincolnshire, Lincolnshire

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1 / 4

Used (2026) Kia K4 GT-Line 147 HP | Good price

1.6T-GDi 150 GT-Line 5dr DCT

2026
4,450 miles
Trim level: GT-Line
1.6L Petrol
Hatchback
Automatic
147 HP (108 kW)
CO2 emissions: 148 g CO2/km comb.
43.5 mpg
Details

Good price

£25,998

Dealer

AB12 3HB Torry, Aberdeen

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Carwow

GT-Line S

(2026) Kia K4 GT-Line S 114 HP

£26,980

Good price

You save £2,120

S817AE

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

Carwow Leasing

GT-Line S

(2026) Kia K4 GT-Line S 179 HP

£28,995

Good price

You save £2,605

ST163UF Stafford, Staffordshire

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

Carwow Leasing

New Kia K4 114 HP (83 kW) 2026 Hatchback

(2026) Kia K4 114 HP

£25,995

Fair price

Estimated price £25,641

BN457ED

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

Carwow

GT-Line S

(2026) Kia K4 GT-Line S 179 HP

£28,995

Good price

You save £2,705

RG14 7HT Berkshire, Berkshire

152 g CO2/km comb. - 179 HP (131 kW) - 6.8 Mpg

1 / 4

Used (2026) Kia K4 GT-Line 147 HP | Good price

1.6T-GDi 150 GT-Line 5dr DCT

2026
1,960 miles
Trim level: GT-Line
1.6L Petrol
Hatchback
Automatic
147 HP (108 kW)
CO2 emissions: 148 g CO2/km comb.
43.5 mpg
Details

Good price

£25,998

Dealer

G67 2UA Cumbernauld, Lanarkshire

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-6%

1 / 4

New (2026) Kia K4 GT-Line 150 HP | Fair price

- 1.6T-GDi 150 GT-Line 5dr DCT

2026
1,198 miles
Trim level: GT-Line
1.6L Petrol
Hatchback
Automatic
150 HP (110 kW)
CO2 emissions: 148 g CO2/km comb.
6.4 mpg
Details

Fair price

£27,100

£29,060

RM6 6EE Greater London, London

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Availability verified

-3%

1 / 4

New (2026) Kia K4 GT-Line 150 HP | Fair price

- 1.6T-GDi 150 GT-Line 5dr DCT

2026
346 miles
Trim level: GT-Line
1.6L Petrol
Hatchback
Automatic
150 HP (110 kW)
CO2 emissions: 148 g CO2/km comb.
6.4 mpg
Details

Fair price

£27,252

£28,281

CO49TF

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Availability verified

-6%

1 / 4

New (2026) Kia K4 GT-Line 150 HP | Fair price

- 1.6T-GDi 150 GT-Line 5dr DCT

2026
117 miles
Trim level: GT-Line
1.6L Petrol
Hatchback
Automatic
150 HP (110 kW)
CO2 emissions: 148 g CO2/km comb.
6.4 mpg
Details

Fair price

£27,293

£29,044

E12 5LH Greater London, London

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Availability verified

-5%

1 / 4

New (2025) Kia K4 GT-Line 114 HP | Fair price

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

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

Fair price

£28,995

£30,665

CB225DG

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Availability verified

Featured deals

Verified Dealers

Sandicliffe.co.uk

GT-Line

(2023) Kia Sportage GT-Line 230 HP

£22,253

Fair price

Estimated price £22,239

LN2 4LD Lincolnshire, Lincolnshire

129 g CO2/km comb. - 230 HP (169 kW) - 58.9 Mpg

Carwow

GT-Line

(2024) Kia Sportage GT-Line 209 HP

£27,349

Fair price

You save £251

WA8 9WZ Halton, Cheshire

128 g CO2/km comb. - 209 HP (153 kW) - 5.7 Mpg

Carwow

GT-Line

(2026) Kia Sportage GT-Line 150 HP

£28,659

Fair price

Estimated price £27,899

CM14 4NS Essex, Essex

159 g CO2/km comb. - 150 HP (110 kW) - 6.8 Mpg

Carwow

GT-Line

(2023) Kia Sportage GT-Line 230 HP

£22,295

Good price

You save £1,705

LE10 3DJ Leicestershire, Leicestershire

129 g CO2/km comb. - 230 HP (169 kW) - 5.7 Mpg

Showing 1 - 25 of 38 results

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Good price

Fair price

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