Kia K4 (GT-Line S) • 36 cars with analysis

Market overview: Market price for Kia K4 (GT-Line S): The average price is £29,241, ranging from £26,500 to £33,535. Among 36 cars with the GT-Line S trim, AutoUncle identified 12 good deals listed below market value.

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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

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

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

Carwow

GT-Line S

(2026) Kia K4 GT-Line S 115 HP

£27,517

Good price

You save £1,483

WC1E 7DP Greater London, London

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

Price checked by AutoUncle

Super price

Good price

Fair price

A bit pricey

Expensive

-5%

1 / 4

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

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

2026
1,308 miles
Trim level: GT-Line S
1.0L Petrol
Hatchback
Automatic
115 HP (84 kW)
CO2 emissions: 132 g CO2/km comb.
5.6 mpg
Details

Good price

£27,517

£29,096

WC1E 7DP Greater London, London

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Availability verified

-3%

1 / 4

Used (2026) Kia K4 GT-Line S 179 HP | Good price

1.6T-GDi 180 GT-Line S 5dr DCT

2026
5,444 miles
Trim level: GT-Line S
1.6L Petrol
Hatchback
Automatic
179 HP (131 kW)
CO2 emissions: 152 g CO2/km comb.
6.8 mpg
Details

Good price

£28,995

£29,995

RG14 7HT Berkshire, Berkshire

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Availability verified

-6%

1 / 1

New (2026) Kia K4 GT-Line S 179 HP | Good price

- 1.6T-GDi 180 GT-Line S 5dr

2026
11 miles
Trim level: GT-Line S
1.6L Petrol
Hatchback
Automatic
179 HP (131 kW)
CO2 emissions: 152 g CO2/km comb.
6.6 mpg
Details

Good price

£28,995

£30,995

ST163UF Stafford, Staffordshire

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Availability verified

-3%

1 / 4

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

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

2026
3,250 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

Good price

£26,980

£27,990

S817AE

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Carwow

GT-Line

(2026) Kia K4 GT-Line 150 HP

£27,065

Fair price

You save £835

RM6 6EE Greater London, London

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

(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

(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

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

1.0 T-GDi MHEV GT-Line S Hatchback

Mar 2026
787 miles
Trim level: GT-Line S
1.0L Petrol
Hatchback
Automatic
115 HP (84 kW)
CO2 emissions: 132 g CO2/km comb.
48.7 mpg
Details

Good price

£27,450

£28,503

Motors.co.uk

FY4 2RP Blackpool, Lancashire

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-18%

1 / 4

Used (2025) Kia K4 GT-Line S 179 HP | Good price

1.6T-GDi 180 GT-Line S 5dr DCT

Jan 2025
2,612 miles
Trim level: GT-Line S
1.6L Petrol
Hatchback
Automatic
179 HP (131 kW)
CO2 emissions: 152 g CO2/km comb.
6.8 mpg
Details

Good price

£29,532

£36,245

Buyacar

Delivered to you

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-1%

1 / 4

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

1.0 T-GDi MHEV GT-Line S Hatchback

Feb 2026
3,363 miles
Trim level: GT-Line S
1.0L Petrol
Hatchback
Automatic
115 HP (84 kW)
CO2 emissions: 132 g CO2/km comb.
48.7 mpg
Details

Good price

£26,908

£27,307

Motors.co.uk

FY4 2RP Blackpool, Lancashire

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-12%

1 / 4

Used (2026) Kia K4 GT-Line S 177 HP | Good price

1.6T-Gdi 180 Gt-Line S 5Dr Dct

2026
5,489 miles
Trim level: GT-Line S
1.6L Petrol
Hatchback
Automatic
177 HP (130 kW)
Details

Good price

£29,999

£34,395

Motors.co.uk

BT12 6LR Belfast

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-15%

1 / 4

New (2026) Kia K4 GT-Line S 180 HP | Good price

1.6T-GDi 180 GT-Line S 5dr DCT

2026
181 miles
Trim level: GT-Line S
1.6L Petrol
Hatchback
Automatic
180 HP (132 kW)
6.8 mpg
Details

Good price

£28,995

£34,495

Motors.co.uk

WC1E 7DP Greater London, London

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New

1 / 4

Used (2026) Kia K4 GT-Line S 177 HP | Super price

1.6T-GDi 180 GT-Line S 5dr DCT

2026
6,000 miles
Trim level: GT-Line S
1.6L Petrol
Hatchback
Automatic
177 HP (130 kW)
6.8 mpg
Details

Super price

£28,695

Buyacar

Delivered to you

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Verified Dealers

Carwow

GT-Line

(2026) Kia K4 GT-Line 114 HP

£27,526

Good price

You save £1,574

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 £1,405

S601TU

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

Carwow

GT-Line

(2026) Kia K4 GT-Line 150 HP

£27,221

Fair price

You save £679

CO49TF

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

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

New

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

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

2026
6,572 miles
Trim level: GT-Line S
1.0L Petrol
Hatchback
Automatic
115 HP (84 kW)
5.6 mpg
Details

Good price

£26,695

Motors.co.uk

OX26 4PZ Oxfordshire, Oxfordshire

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1 / 4

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

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

2026
2,376 miles
Trim level: GT-Line S
1.0L Petrol
Hatchback
Automatic
115 HP (84 kW)
5.6 mpg
Details

Good price

£27,495

Motors.co.uk

TR9 6FZ Cornwall, Cornwall

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1 / 4

Used (2026) Kia K4 GT-Line S 113 HP | Fair price

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

2026
3,500 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

Fair price

£25,998

£26,498

Dealer

KY1 3NE Fife, Fife

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-3%

1 / 3

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

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

2026
2,121 miles
Trim level: GT-Line S
1.0L Petrol
Hatchback
Automatic
115 HP (84 kW)
5.6 mpg
Details

Fair price

£30,021

£31,035

Motors.co.uk

LE11 1LR Leicestershire, Leicestershire

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1 / 4

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

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

2026
6,366 miles
Trim level: GT-Line S
1.0L Petrol
Hatchback
Automatic
115 HP (84 kW)
5.6 mpg
Details

Fair price

£29,995

Motors.co.uk

RG2 0ST Berkshire, Berkshire

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

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

2026
3,338 miles
Trim level: GT-Line S
1.0L Petrol
Hatchback
Automatic
115 HP (84 kW)
5.6 mpg
Details

Fair price

£27,750

Buyacar

Delivered to you

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1 / 4

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

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

2026
6,366 miles
Trim level: GT-Line S
1.0L Petrol
Hatchback
Automatic
115 HP (84 kW)
5.6 mpg
Details

Fair price

£28,895

Motors.co.uk

BT35 6PU Newry, Mourne And Down

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-3%

1 / 4

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

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

2026
4,345 miles
Trim level: GT-Line S
1.0L Petrol
Hatchback
Automatic
115 HP (84 kW)
5.6 mpg
Details

Fair price

£28,990

£29,990

Motors.co.uk

BT23 8NN Ards And North Down

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1 / 3

New (2026) Kia K4 GT-Line S 177 HP | Fair price

1.6T-GDi 180 GT-Line S 5dr DCT

2026
50 miles
Trim level: GT-Line S
1.6L Petrol
Hatchback
Automatic
177 HP (130 kW)
6.8 mpg
Details

Fair price

£31,995

£34,995

Buyacar

Delivered to you

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1 / 3

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

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

2026
2,504 miles
Trim level: GT-Line S
1.0L Petrol
Hatchback
Automatic
115 HP (84 kW)
5.6 mpg
Details

Fair price

£28,999

Motors.co.uk

PO31 8PE Isle Of Wight, Isle Of Wight

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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

£27,263

Fair price

You save £637

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

Sandicliffe.co.uk

GT-Line S

(2023) Kia Sportage GT-Line S 230 HP

£26,991

Fair price

You save £409

NG7 2SZ Nottingham, Nottinghamshire

132 g CO2/km comb. - 230 HP (169 kW) - 57.6 Mpg

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Used (2026) Kia K4 GT-Line S 113 HP | Fair price

1.0 T-GDi MHEV GT-Line S Hatchback

Mar 2026
3,000 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

Fair price

£27,567

£29,602

Dealer

FY4 2RP Blackpool, Lancashire

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1 / 4

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

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

2026
2,843 miles
Trim level: GT-Line S
1.0L Petrol
Hatchback
Automatic
115 HP (84 kW)
5.6 mpg
Details

Fair price

£29,495

Motors.co.uk

SY16 3BD Powys, Powys

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

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

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

Fair price

£27,995

Motors.co.uk

PE1 5UA Peterborough, Cambridgeshire

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-6%

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

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

2026
3,000 miles
Trim level: GT-Line S
1.0L Petrol
Hatchback
Automatic
115 HP (84 kW)
5.6 mpg
Details

Fair price

£27,995

£29,995

Motors.co.uk

SG8 5HJ Hertfordshire, Hertfordshire

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Used (2026) Kia K4 GT-Line S 177 HP | Fair price

1.6T-GDi 180 GT-Line S 5dr DCT

2026
3,000 miles
Trim level: GT-Line S
1.6L Petrol
Hatchback
Automatic
177 HP (130 kW)
6.8 mpg
Details

Fair price

£31,312

Buyacar

Delivered to you

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Featured deals

Verified Dealers

Carwow

GT-Line S

(2023) Kia Sportage GT-Line S 150 HP

£25,295

Fair price

Estimated price £24,998

TN24 0HB Willesborough, Kent

158 g CO2/km comb. - 150 HP (110 kW) - 6.9 Mpg

Carwow

GT-Line S

(2023) Kia Sportage GT-Line S 150 HP

£24,250

Fair price

You save £650

EN8 8DY Waltham Cross, Hertfordshire

158 g CO2/km comb. - 150 HP (110 kW) - 6.9 Mpg

Carwow

GT-Line S

(2024) Kia Sportage GT-Line S 159 HP

£28,514

Fair price

You save £786

WC1E 7DP Greater London, London

144 g CO2/km comb. - 159 HP (116 kW) - 45.0 Mpg

Carwow

GT-Line S

(2024) Kia Sportage GT-Line S 159 HP

£28,711

Fair price

Estimated price £28,698

B736SP

144 g CO2/km comb. - 159 HP (116 kW) - 6.3 Mpg

Showing 1 - 25 of 33 results

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