2021 Mercedes GLC300 • Compare 40 used cars with valuation

Market overview: April-2026 Price Analysis: A used Mercedes GLC300 from 2021 currently costs between £22,295 and £37,990. On average, the mileage for this year stands at 48,744 miles. The depreciation and price trend over the last 12 months is -£3,320.

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Carwow

2022

(2022) Mercedes GLC300 AMG line 258 HP

£28,049

Super price

You save £4,351

EH15 1BT Edinburgh, Edinburgh

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

Carwow

2022

(2022) Mercedes GLC300 AMG Line Premium 245 HP

£28,145

Fair price

You save £955

LE39QB

174 g CO2/km comb. - 245 HP (180 kW) - 6.6 Mpg

Carwow

2022

(2022) Mercedes GLC300 AMG line 258 HP

£26,000

Super price

You save £3,900

CM1 3BH Essex, Essex

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

Carwow

2023

(2023) Mercedes GLC300 AMG line 258 HP

£31,634

Good price

You save £2,866

SL15PR

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

Price checked by AutoUncle

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Good price

Fair price

A bit pricey

Expensive

-5%

Used (2021) Mercedes GLC300 AMG Line Premium 306 HP | Super price

2021
31,398 miles
Trim level: AMG Line Premium
2.0L Diesel
Estate
Automatic
306 HP (225 kW)
CO2 emissions: 48 g CO2/km comb.
Details

Super price

£28,461

£29,995

Dealer

DL1 1XP Darlington, Durham

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-5%

1 / 4

Used (2021) Mercedes GLC300 AMG Line Premium 306 HP | Super price

Oct 2021
47,520 miles
Trim level: AMG Line Premium
2.0L Diesel
Estate
Automatic
306 HP (225 kW)
CO2 emissions: 48 g CO2/km comb.
Details

Super price

£26,333

£27,990

Dealer

ME7 Hempstead, Hertfordshire

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-1%

1 / 1

Used (2021) Mercedes GLC300 AMG Line Premium | Super price

2021
53,594 miles
Trim level: AMG Line Premium
2.0L Diesel
Automatic
mpg: 44.1
Details

Super price

£25,060

£25,420

Parkers.co.uk

Blackburn, Lancashire

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-2%

Used (2021) Mercedes GLC300 AMG Line Premium Plus | Super price

2021
44,400 miles
Trim level: AMG Line Premium Plus
2.0L Diesel
Automatic
mpg: 43.5
Details

Super price

£27,745

£28,495

Parkers.co.uk

Exeter, Devon

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Carwow

2022

(2022) Mercedes GLC300 AMG Line Premium 245 HP

£25,100

Good price

You save £2,600

EN88DY

173 g CO2/km comb. - 245 HP (180 kW) - 6.6 Mpg

Carwow

2022

(2022) Mercedes GLC300 AMG line 258 HP

£26,400

Good price

You save £2,600

WD3 3RT Croxley Green, Hertfordshire

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

Carwow

2022

(2022) Mercedes GLC300 AMG Line Premium 245 HP

£32,990

Fair price

You save £910

HA36AG

173 g CO2/km comb. - 245 HP (180 kW) - 6.6 Mpg

Carwow

2022

(2022) Mercedes GLC300 AMG line 258 HP

£26,100

Good price

You save £2,500

N11 1GN Greater London, London

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

New

1 / 1

Used (2021) Mercedes GLC300 AMG line 258 HP | Super price

GLC 4Matic AMG Line 5dr 9G-Tro

2021
64,856 miles
Trim level: AMG line
2.0L Petrol
SUV
Automatic
258 HP (189 kW)
CO2 emissions: 194 g CO2/km comb.
mpg: 33.2
Details

Super price

£21,998

Dealer

S41 7LG Derbyshire, Derbyshire

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-10%

1 / 4

Used (2021) Mercedes GLC300 AMG Line Premium 241 HP | Good price

GLC4Matic AMG Line Premium Pls 5dr

2021
33,000 miles
Trim level: AMG Line Premium
2.0L Diesel
SUV
Automatic
241 HP (177 kW)
Details

Good price

£30,300

£34,000

Honestjohn

EH12 8LH Edinburgh, Edinburgh

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1 / 4

Used (2021) Mercedes GLC300 AMG line 258 HP | Good price

4Matic AMG Line 5dr 9G-Tronic

2021
43,654 miles
Trim level: AMG line
2.0L Petrol
Coupe
Automatic
258 HP (189 kW)
Details

Good price

£29,495

Dealer

PO3 5FH Portsmouth, Hampshire

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-6%

1 / 4

Used (2021) Mercedes GLC300 AMG Line Premium 245 HP | Good price

4Matic AMG Line Premium 5dr

2021
52,000 miles
Trim level: AMG Line Premium
2.0L Diesel
SUV
Automatic
245 HP (180 kW)
Details

Good price

£26,445

£28,295

Buyacar

Delivered to you

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-4%

1 / 4

Used (2021) Mercedes GLC300 AMG Line Premium 306 HP | Good price

Jul 2021
37,768 miles
Trim level: AMG Line Premium
2.0L Diesel
Coupe
Automatic
306 HP (225 kW)
CO2 emissions: 55 g CO2/km comb.
Details

Good price

£31,445

£32,990

Dealer

CM23 Bishop'S Stortford, Hertfordshire

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-1%

1 / 4

Used (2021) Mercedes GLC300 AMG line 258 HP | Good price

GLC Coupé 4Matic AMG Line 5dr

2021
29,777 miles
Trim level: AMG line
2.0L Petrol
Coupe
Automatic
258 HP (189 kW)
CO2 emissions: 193 g CO2/km comb.
mpg: 33.2
Details

Good price

£31,498

£31,998

Dealer

PH1 3XF Perth And Kinross, Perth And Kinross

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Carwow

2022

(2022) Mercedes GLC300 AMG line 258 HP

£24,349

Super price

You save £5,051

E4 7PX Greater London, London

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

Carwow

2022

(2022) Mercedes GLC300 AMG Line Premium 245 HP

£28,800

Fair price

You save £1,100

ME59QG

174 g CO2/km comb. - 245 HP (180 kW) - 6.6 Mpg

Carwow

2022

(2022) Mercedes GLC300 AMG Line Premium 245 HP

£34,950

Fair price

Estimated price £33,592

SS129JQ

174 g CO2/km comb. - 245 HP (180 kW) - 6.6 Mpg

Carwow

2022

(2022) Mercedes GLC300 AMG Line Premium 245 HP

£30,000

Fair price

Estimated price £29,092

CM1 3BH Essex, Essex

174 g CO2/km comb. - 245 HP (180 kW) - 6.6 Mpg

New

Used (2021) Mercedes GLC300 AMG Line Premium 245 HP | Good price

GLC 4Matic AMG Line Premium 5dr

2021
53,195 miles
Trim level: AMG Line Premium
2.0L Diesel
Estate
Automatic
245 HP (180 kW)
mpg: 42.2
Details

Good price

£26,057

Parkers.co.uk

BR6 7QR Greater London, London

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New

1 / 4

Used (2021) Mercedes GLC300 AMG line 258 HP | Super price

GLC 4Matic AMG Line 5dr 9G-Tro

2021
53,500 miles
Trim level: AMG line
2.0L Petrol
Coupe
Automatic
258 HP (189 kW)
Details

Super price

£22,500

Motors.co.uk

TF7 5HA Telford And Wrekin, Shropshire

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1 / 3

Used (2021) Mercedes GLC300 AMG Line Premium 245 HP | Fair price

- 4Matic AMG Line Premium Pls 5dr

2021
31,412 miles
Trim level: AMG Line Premium
2.0L Diesel
Estate
Automatic
245 HP (180 kW)
CO2 emissions: 174 g CO2/km comb.
mpg: 6.6
Details

Fair price

£32,499

PR6 9GW Lancashire, Lancashire

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Availability verified

1 / 4

Used (2021) Mercedes GLC300 AMG line 245 HP | Fair price

GLC 2.0 AMG Line (Premium Plus)

2021
38,510 miles
Trim level: AMG line
2.0L Diesel
SUV
Automatic
245 HP (180 kW)
CO2 emissions: 174 g CO2/km comb.
mpg: 6.6
Details

Fair price

£30,700

£31,000

CM1 3BH Essex, Essex

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Availability verified

-2%

1 / 1

Used (2021) Mercedes GLC300 AMG Line Premium Plus 245 HP | Fair price

2021
25,581 miles
Trim level: AMG Line Premium Plus
2.0L Diesel
Coupe
Automatic
245 HP (180 kW)
mpg: 40.9
Details

Fair price

£34,750

£35,509

Parkers.co.uk

DN15 8XF North Lincolnshire, Lincolnshire

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1 / 3

Used (2021) Mercedes GLC300 AMG line 258 HP | Fair price

GLC Coupe 4Matic AMG Line 5dr

2021
31,800 miles
Trim level: AMG line
2.0L Petrol
Coupe
Automatic
258 HP (189 kW)
CO2 emissions: 196 g CO2/km comb.
mpg: 33
Details

Fair price

£31,634

£30,801

Dealer

SL1 5PR Berkshire, Berkshire

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-5%

1 / 1

Used (2021) Mercedes GLC300 AMG Line Premium 258 HP | Fair price

GLC-Class (2021/71)GLC 300 4Matic

2021
34,404 miles
Trim level: AMG Line Premium
2.0L Petrol
Automatic
258 HP (189 kW)
mpg: 33.2
Details

Fair price

£28,195

£29,895

Parkers.co.uk

Ashton-Under-Lyne, Manchester

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Used (2021) Mercedes GLC300 AMG line | Fair price

GLC 2.0 AMG Line (Premium Plus)

2021
44,412 miles
Trim level: AMG line
2.0L Diesel
SUV
Automatic
Details

Fair price

£30,000

Motors.co.uk

CM1 3BH Essex, Essex

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-5%

1 / 4

Used (2021) Mercedes GLC300 AMG Line Premium 258 HP | Fair price

GLC 4Matic AMG Line Premium 5dr

2021
34,404 miles
Trim level: AMG Line Premium
2.0L Petrol
Estate
Automatic
258 HP (189 kW)
Details

Fair price

£28,195

£29,895

Motors.co.uk

OL7 0QN Greater Manchester, Manchester

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-5%

1 / 1

Used (2021) Mercedes GLC300 AMG Line Premium 245 HP | Fair price

2021
74,365 miles
Trim level: AMG Line Premium
2.0L Diesel
Coupe
Automatic
245 HP (180 kW)
mpg: 40.9
Details

Fair price

£26,843

£28,495

Parkers.co.uk

DL1 1LA Darlington, Durham

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Carwow

2022

(2022) Mercedes GLC300 AMG Line Premium 245 HP

£34,849

Fair price

Estimated price £34,467

S9 1XU Tinsley, South Yorkshire

174 g CO2/km comb. - 245 HP (180 kW) - 6.6 Mpg

Carwow

2021

(2021) Mercedes GLC300 AMG line 245 HP

£30,700

Fair price

Estimated price £29,795

CM1 3BH Essex, Essex

174 g CO2/km comb. - 245 HP (180 kW) - 6.6 Mpg

Carwow

2023

(2023) Mercedes GLC300 AMG line 258 HP

£34,795

Good price

You save £2,105

TN24 0HB Willesborough, Kent

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

Carwow

2022

(2022) Mercedes GLC300 AMG Line Premium Plus 258 HP

£25,040

Fair price

Estimated price £24,607

BB1 3NU Lancashire, Lancashire

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

-2%

1 / 1

Used (2021) Mercedes GLC300 AMG Line Premium Plus 245 HP | Fair price

2021
19,000 miles
Trim level: AMG Line Premium Plus
2.0L Diesel
Coupe
Automatic
245 HP (180 kW)
mpg: 40.9
Details

Fair price

£37,990

£38,990

Parkers.co.uk

HG4 Ripon, North Yorkshire

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1 / 4

Used (2021) Mercedes GLC300 AMG Line Premium 245 HP | Fair price

GLC 4Matic AMG Line Premium Pls

2021
52,589 miles
Trim level: AMG Line Premium
2.0L Diesel
Estate
Automatic
245 HP (180 kW)
mpg: 42.2
Details

Fair price

£28,995

Parkers.co.uk

SL6 9EE Berkshire, Berkshire

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1 / 1

Used (2021) Mercedes GLC300 AMG Line Premium | Fair price

2021
86,942 miles
Trim level: AMG Line Premium
2.0L Diesel
Automatic
mpg: 44.1
Details

Fair price

£22,295

Parkers.co.uk

Preston, Lancashire

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-4%

1 / 4

Used (2021) Mercedes GLC300 AMG line | Fair price

GLC Class 2.0 AMG Line SUV

2021
79,000 miles
Trim level: AMG line
2.0L Diesel
SUV
Automatic
Details

Fair price

£22,750

£23,750

Motors.co.uk

IP29 5AP Barrow, Suffolk

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Used (2021) Mercedes GLC300 AMG Line Premium Plus | Fair price

2021
113,000 miles
Trim level: AMG Line Premium Plus
2.0L Diesel
Estate
Automatic
mpg: 43.5
Details

Fair price

£18,880

Parkers.co.uk

WD23 2NZ Hertfordshire, Hertfordshire

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Carwow

2022

(2022) Mercedes GLC300 AMG Line Premium 245 HP

£30,650

Fair price

Estimated price £29,299

WA15 8SX Hale Barns, Manchester

174 g CO2/km comb. - 245 HP (180 kW) - 6.6 Mpg

Carwow

2022

(2022) Mercedes GLC300 AMG line 258 HP

£28,849

Super price

You save £3,251

BB12 6EH Lancashire, Lancashire

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

Carwow

2022

(2022) Mercedes GLC300 AMG Line Premium 245 HP

£29,613

Super price

You save £2,987

BD2 1DS West Yorkshire, West Yorkshire

174 g CO2/km comb. - 245 HP (180 kW) - 6.6 Mpg

Carwow

2022

(2022) Mercedes GLC300 AMG Line Premium 245 HP

£28,299

Good price

You save £2,501

CW7 Cheshire West And Chester, Cheshire

173 g CO2/km comb. - 245 HP (180 kW) - 47.9 Mpg

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