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Mercedes GLC300 (petrol) • 233 cars with Valuation

Market overview: Petrol Mercedes GLC300 (August-2026): There are currently 233 used petrol Mercedes GLC300 cars for sale. Prices range from £21,472 to £61,867, with a median price of £35,645. AutoUncle has identified 39 cars as being offered below market price. The typical selling time for a petrol Mercedes GLC300 is approximately 10 days, and 54.2% of the listings have recently been reduced in price (Source: AutoUncle market data, August-2026).

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Carwow

Used Mercedes GLC300 AMG line 272 HP (200 kW) 2023 Black SUV

(2023) Mercedes GLC300 AMG line 272 HP

Fair price

LE10 3DJ Leicestershire, Leicestershire

193 g CO2/km comb. - 272 HP (200 kW) - 8.5 Mpg

Carwow

Used Mercedes GLC300 AMG line 258 HP (189 kW) 2026 SUV

(2026) Mercedes GLC300 AMG line 258 HP

Super price

You save £3,205

S80 2QD Nottinghamshire, Nottinghamshire

165 g CO2/km comb. - 258 HP (189 kW) - 7.3 Mpg

Carwow

Used Mercedes GLC300 AMG line 258 HP (189 kW) 2023 SUV

(2023) Mercedes GLC300 AMG line 258 HP

Super price

You save £4,056

193 g CO2/km comb. - 258 HP (189 kW) - 8.5 Mpg

Carwow

Used Mercedes GLC300 AMG Line Premium Plus 258 HP (189 kW) 2022 Black SUV

(2022) Mercedes GLC300 AMG Line Premium Plus 258 HP

Good price

You save £1,640

ME5 9QG Kent, Kent

190 g CO2/km comb. - 258 HP (189 kW) - 8.3 Mpg

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1 / 4

Used (2020) Mercedes GLC300 AMG line 258 HP | Good price

GLC 2020 AMG Line 4Matic 9G-Tr

2020
54,833 miles
Trim level: AMG line
2.0L Petrol
SUV
Automatic
258 HP (189 kW)
CO2 emissions: 191 g CO2/km comb.
8.3 mpg
Details

Good price

£22,340

£21,920

BB1 3NU Lancashire, Lancashire

Availability verified

-8%

1 / 4

Used (2023) Mercedes GLC300 AMG line 258 HP | Good price

GLC Coupe 2023 AMG Line 4Matic AMG

2023
63,556 miles
Trim level: AMG line
2.0L Petrol
SUV
Automatic
258 HP (189 kW)
CO2 emissions: 193 g CO2/km comb.
8.5 mpg
Details

Good price

£24,040

£26,255

BB1 3NU Lancashire, Lancashire

Availability verified

-7%

1 / 4

Used (2022) Mercedes GLC300 AMG line 258 HP | Super price

GLC 2022 AMG Line 4Matic AMG Line

2022
47,504 miles
Trim level: AMG line
3.0L Petrol
SUV
Automatic
258 HP (189 kW)
CO2 emissions: 191 g CO2/km comb.
8.3 mpg
Details

Super price

£21,570

£23,340

PE15XL

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1 / 4

Used (2022) Mercedes GLC300 AMG Line Premium Plus 258 HP | Super price

GLC 2022 AMG Line 4Matic AMG Line

2022
61,143 miles
Trim level: AMG Line Premium Plus
2.0L Petrol
SUV
Automatic
258 HP (189 kW)
CO2 emissions: 190 g CO2/km comb.
8.3 mpg
Details

Super price

£24,480

£23,780

BB1 3NU Lancashire, Lancashire

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Carwow

Used Mercedes GLC300 AMG line 258 HP (189 kW) 2021 Silver SUV

(2021) Mercedes GLC300 AMG line 258 HP

Fair price

Estimated price £27,149

BR3 6QJ Beckenham, London

199 g CO2/km comb. - 258 HP (189 kW) - 31.7 Mpg

Carwow

Used Mercedes GLC300 AMG Line Premium Plus 258 HP (189 kW) 2022 SUV

(2022) Mercedes GLC300 AMG Line Premium Plus 258 HP

Fair price

Estimated price £26,798

DL6 2NA North Yorkshire, North Yorkshire

190 g CO2/km comb. - 258 HP (189 kW) - 8.3 Mpg

Carwow

Used Mercedes GLC300 AMG line 258 HP (189 kW) 2020 Silver SUV

(2020) Mercedes GLC300 AMG line 258 HP

Fair price

BL9 6HH Greater Manchester, Manchester

193 g CO2/km comb. - 258 HP (189 kW) - 31.7 Mpg

Carwow

Used Mercedes GLC300 AMG line 258 HP (189 kW) 2022 Silver SUV

(2022) Mercedes GLC300 AMG line 258 HP

Good price

You save £2,151

SA7 9AG Llansamlet, West Glamorgan

188 g CO2/km comb. - 258 HP (189 kW) - 8.3 Mpg

New

1 / 1

Used (2023) Mercedes GLC300 AMG line 258 HP | Good price

GLC Coupe 2023 AMG Line 4Matic

2023
42,047 miles
Trim level: AMG line
2.0L Petrol
SUV
Automatic
258 HP (189 kW)
CO2 emissions: 193 g CO2/km comb.
8.5 mpg
Details

Good price

£29,420

BB1 3NU Lancashire, Lancashire

Availability verified

-7%

1 / 4

Used (2020) Mercedes GLC300 AMG line 258 HP | Good price

GLC 2020 AMG Line 4Matic 9G-Tr

2020
47,504 miles
Trim level: AMG line
2.0L Petrol
SUV
Automatic
258 HP (189 kW)
CO2 emissions: 191 g CO2/km comb.
8.3 mpg
Details

Good price

£21,570

£23,340

PE1 5XL Peterborough, Cambridgeshire

Availability verified

-1%

1 / 4

Used (2022) Mercedes GLC300 AMG line 258 HP | Good price

GLC 2022 AMG Line 4Matic AMG Line

2022
25,620 miles
Trim level: AMG line
3.0L Petrol
SUV
Automatic
258 HP (189 kW)
CO2 emissions: 191 g CO2/km comb.
8.3 mpg
Details

Good price

£26,199

£26,499

M417TB Urmston, Manchester

Availability verified

-4%

1 / 4

Used (2022) Mercedes GLC300 AMG Line Premium Plus 258 HP | Good price

GLC 2022 AMG Line 4Matic AMG Line

2022
40,997 miles
Trim level: AMG Line Premium Plus
2.0L Petrol
SUV
Automatic
258 HP (189 kW)
CO2 emissions: 190 g CO2/km comb.
8.3 mpg
Details

Good price

£30,260

£31,530

ME5 9QG Kent, Kent

Availability verified

-4%

1 / 4

Used (2022) Mercedes GLC300 AMG line 258 HP | Super price

GLC 2022 AMG Line 4Matic AMG Line

2022
46,223 miles
Trim level: AMG line
2.0L Petrol
SUV
Automatic
258 HP (189 kW)
CO2 emissions: 191 g CO2/km comb.
8.3 mpg
Details

Super price

£22,499

£23,499

M417TB Urmston, Manchester

Availability verified

-4%

1 / 4

Used (2022) Mercedes GLC300 AMG line 258 HP | Super price

GLC 4Matic AMG Line 5dr 9G-Tro

2022
25,620 miles
Trim level: AMG line
2.0L Petrol
SUV
Automatic
258 HP (189 kW)
CO2 emissions: 191 g CO2/km comb.
8.3 mpg
Details

Super price

£26,199

£27,499

CW73AL Cheshire West And Chester, Cheshire

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Used Mercedes GLC300 AMG line 258 HP (189 kW) 2021 Black SUV

(2021) Mercedes GLC300 AMG line 258 HP

Fair price

Estimated price £29,445

SA7 9AG Llansamlet, West Glamorgan

193 g CO2/km comb. - 258 HP (189 kW) - 8.5 Mpg

Carwow

Used Mercedes GLC300 AMG line 258 HP (189 kW) 2023 SUV

(2023) Mercedes GLC300 AMG line 258 HP

Super price

You save £3,560

OL11 Greater Manchester, Manchester

193 g CO2/km comb. - 258 HP (189 kW) - 8.5 Mpg

Carwow

Used Mercedes GLC300 AMG line 258 HP (189 kW) 2023 SUV

(2023) Mercedes GLC300 AMG line 258 HP

Fair price

193 g CO2/km comb. - 258 HP (189 kW) - 8.5 Mpg

Carwow

Used Mercedes GLC300 AMG line 258 HP (189 kW) 2023 Black SUV

(2023) Mercedes GLC300 AMG line 258 HP

Fair price

Estimated price £35,549

CM5 0ER Magdalen Laver, Essex

165 g CO2/km comb. - 258 HP (189 kW) - 38.7 Mpg

-2%

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Used (2022) Mercedes GLC300 AMG Line Premium 258 HP | Good price

GLC 2022 AMG Line 4Matic AMG Line

2022
34,430 miles
Trim level: AMG Line Premium
3.0L Petrol
SUV
Automatic
258 HP (189 kW)
CO2 emissions: 188 g CO2/km comb.
8.3 mpg
Details

Good price

£25,299

£25,999

CW7 Cheshire West And Chester, Cheshire

Availability verified

-2%

1 / 4

Used (2022) Mercedes GLC300 AMG Line Premium 258 HP | Super price

GLC 2022 AMG Line 4Matic AMG Line

2022
28,492 miles
Trim level: AMG Line Premium
2.0L Petrol
SUV
Automatic
258 HP (189 kW)
CO2 emissions: 188 g CO2/km comb.
8.3 mpg
Details

Super price

£25,990

£26,790

S751LR

Availability verified

-2%

1 / 4

Used (2023) Mercedes GLC300 AMG line 258 HP | Super price

GLC Coupe 2023 AMG Line 4Matic AMG

2023
29,807 miles
Trim level: AMG line
2.0L Petrol
SUV
Automatic
258 HP (189 kW)
CO2 emissions: 193 g CO2/km comb.
8.5 mpg
Details

Super price

£27,444

£28,091

BB97DU

Availability verified

-4%

1 / 4

Used (2026) Mercedes GLC300 AMG Line Premium Plus 258 HP | Good price

GLC 2027 AMG Line 4Matic AMG Line

2026
22,765 miles
Trim level: AMG Line Premium Plus
2.0L Petrol
SUV
Automatic
258 HP (189 kW)
CO2 emissions: 167 g CO2/km comb.
7.3 mpg
Details

Good price

£39,795

£41,495

S41 9AJ Whittington Moor, Derbyshire

Availability verified

-8%

1 / 4

Used (2022) Mercedes GLC300 AMG line 258 HP | Super price

GLC 2022 AMG Line 4Matic AMG Line

2022
80,036 miles
Trim level: AMG line
2.0L Petrol
SUV
Automatic
258 HP (189 kW)
CO2 emissions: 191 g CO2/km comb.
8.3 mpg
Details

Super price

£17,990

£19,695

RG263JE

Availability verified

-5%

1 / 4

Used (2022) Mercedes GLC300 AMG line 258 HP | Good price

4Matic Premium 5dr 9G-Tronic

2022
23,648 miles
Trim level: AMG line
2.0L Petrol
SUV
Automatic
258 HP (189 kW)
CO2 emissions: 188 g CO2/km comb.
8.3 mpg
Details

Good price

£29,349

£31,049

SA7 9AG Llansamlet, West Glamorgan

Availability verified

1 / 4

Used (2024) Mercedes GLC300 AMG line 258 HP | Good price

GLC SUV 4Matic AMG Line 5dr

2024
21,533 miles
Trim level: AMG line
2.0L Petrol
SUV
Automatic
258 HP (189 kW)
CO2 emissions: 165 g CO2/km comb.
38.7 mpg
Details

Good price

£36,000

£35,850

CM1 3BH Essex, Essex

Availability verified

1 / 2

Used (2026) Mercedes GLC300 AMG line 258 HP | Super price

GLC 2027 AMG Line 4Matic AMG Line

2026
20,350 miles
Trim level: AMG line
3.0L Petrol
SUV
Automatic
258 HP (189 kW)
CO2 emissions: 165 g CO2/km comb.
7.3 mpg
Details

Super price

£33,495

S80 2QD Nottinghamshire, Nottinghamshire

Availability verified

-5%

1 / 4

Used (2023) Mercedes GLC300 AMG line 258 HP | Super price

GLC Coupe 2023 AMG Line 4Matic AMG

2023
36,833 miles
Trim level: AMG line
2.0L Petrol
SUV
Automatic
258 HP (189 kW)
CO2 emissions: 193 g CO2/km comb.
8.5 mpg
Details

Super price

£26,840

£28,308

OL11 Greater Manchester, Manchester

Availability verified

1 / 4

Used (2022) Mercedes GLC300 AMG line 258 HP | Super price

4Matic 9G-Tronic

2022
45,053 miles
Trim level: AMG line
2.0L Petrol
SUV
Automatic
258 HP (189 kW)
CO2 emissions: 191 g CO2/km comb.
8.3 mpg
Details

Super price

£23,495

LN6 3SR Lincolnshire, Lincolnshire

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Carwow

Used Mercedes GLC300 AMG line 272 HP (200 kW) 2023 Black SUV

(2023) Mercedes GLC300 AMG line 272 HP

Fair price

Estimated price £29,707

LE10 3DJ Leicestershire, Leicestershire

193 g CO2/km comb. - 272 HP (200 kW) - 8.5 Mpg

Carwow

Used Mercedes GLC300 AMG line 258 HP (189 kW) 2026 SUV

(2026) Mercedes GLC300 AMG line 258 HP

Fair price

SS6 7FY Essex, Essex

165 g CO2/km comb. - 258 HP (189 kW) - 7.3 Mpg

Carwow

Used Mercedes GLC300 AMG line 258 HP (189 kW) 2023 Black SUV

(2023) Mercedes GLC300 AMG line 258 HP

Fair price

Estimated price £29,087

RM20 3WJ Thurrock, Essex

193 g CO2/km comb. - 258 HP (189 kW) - 8.5 Mpg

Carwow

Used Mercedes GLC300 AMG Line Premium Plus 258 HP (189 kW) 2021 Blue SUV

(2021) Mercedes GLC300 AMG Line Premium Plus 258 HP

Fair price

CM1 3BH Essex, Essex

200 g CO2/km comb. - 258 HP (189 kW) - 8.5 Mpg

1 / 4

New (2026) Mercedes GLC300 AMG line 258 HP | Super price

- 4Matic AMG Line 5dr 9G-Tronic

2026
0 miles
Trim level: AMG line
3.0L Petrol
SUV
Automatic
258 HP (189 kW)
CO2 emissions: 165 g CO2/km comb.
7.3 mpg
Details

Super price

£51,970

NW90HX, London

Availability verified

1 / 4

New (2026) Mercedes GLC300 AMG line 258 HP | Super price

- 4Matic AMG Line 5dr 9G-Tronic

2026
0 miles
Trim level: AMG line
2.0L Petrol
SUV
Automatic
258 HP (189 kW)
CO2 emissions: 165 g CO2/km comb.
7.2 mpg
Details

Super price

£51,470

£51,970

G40DH

Availability verified

1 / 4

New (2025) Mercedes GLC300 AMG line 258 HP | Super price

- 4Matic AMG Line 5dr 9G-Tronic

2025
0 miles
Trim level: AMG line
2.0L Petrol
SUV
Automatic
258 HP (189 kW)
CO2 emissions: 165 g CO2/km comb.
7.2 mpg
Details

Super price

£51,955

£52,405

CT2 0AB Sturry, Kent

Availability verified

1 / 4

New (2025) Mercedes GLC300 AMG line 258 HP | Super price

- 4Matic AMG Line 5dr 9G-Tronic

2025
0 miles
Trim level: AMG line
2.0L Petrol
SUV
Automatic
258 HP (189 kW)
CO2 emissions: 165 g CO2/km comb.
7.3 mpg
Details

Super price

£51,260

S417JB, Derbyshire

Availability verified

1 / 4

New (2026) Mercedes GLC300 AMG line 258 HP | Super price

- 4Matic AMG Line 5dr 9G-Tronic

2026
0 miles
Trim level: AMG line
2.0L Petrol
SUV
Automatic
258 HP (189 kW)
CO2 emissions: 165 g CO2/km comb.
7.3 mpg
Details

Super price

£51,760

LS126EE, West Yorkshire

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Carwow

Used Mercedes GLC300 AMG line 258 HP (189 kW) 2022 Black SUV

(2022) Mercedes GLC300 AMG line 258 HP

Fair price

Estimated price £30,635

CM1 3BH Essex, Essex

190 g CO2/km comb. - 258 HP (189 kW) - 8.3 Mpg

Carwow

Used Mercedes GLC300 AMG line 258 HP (189 kW) 2025 Black SUV

(2025) Mercedes GLC300 AMG line 258 HP

Fair price

Estimated price £36,680

ML3 7JP South Lanarkshire, Lanarkshire

165 g CO2/km comb. - 258 HP (189 kW) - 7.3 Mpg

Carwow

Used Mercedes GLC300 AMG Line Premium 258 HP (189 kW) 2022 SUV

(2022) Mercedes GLC300 AMG Line Premium 258 HP

Fair price

Estimated price £27,199

SS6 7FY Essex, Essex

188 g CO2/km comb. - 258 HP (189 kW) - 8.3 Mpg

Carwow

Used Mercedes GLC300 AMG line 280 HP (205 kW) 2023 Silver SUV

(2023) Mercedes GLC300 AMG line 280 HP

Fair price

Estimated price £33,316

S80 2QD Nottinghamshire, Nottinghamshire

165 g CO2/km comb. - 280 HP (205 kW) - 7.3 Mpg

Showing 1 - 25 of 238 results

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Mercedes GLC300 (465)