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Mercedes GLC300de Valuation: 71 used car listings analysed

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Carwow

Used Mercedes GLC300de AMG line 333 HP (244 kW) 2023 Silver SUV
(2023) Mercedes GLC300de AMG line 333 HP
£32,890

Fair price

You save £710
CM2 5EF Springfield, Essex

11 g CO2/km comb. - 333 HP (244 kW) - 0.4 Mpg

Carwow

Used Mercedes GLC300de AMG line 306 HP (225 kW) 2022 Silver Coupe
(2022) Mercedes GLC300de AMG line 306 HP
£30,190

Fair price

You save £510
CO3 8PH Stanway, Essex

55 g CO2/km comb. - 306 HP (225 kW) - 1.9 Mpg

Carwow

Used Mercedes GLC300de AMG line 333 HP (244 kW) 2024 White SUV
(2024) Mercedes GLC300de AMG line 333 HP
£43,450

Fair price

Estimated price £43,374
CM1 3BH Essex, Essex

11 g CO2/km comb. - 333 HP (244 kW) - 0.4 Mpg

Carwow

Used Mercedes GLC300de AMG line 333 HP (244 kW) 2023 White SUV
(2023) Mercedes GLC300de AMG line 333 HP
£36,999

Fair price

You save £1,601
G4 0DH Glasgow City, Glasgow

44 g CO2/km comb. - 333 HP (244 kW) - 1.7 Mpg

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Price checked by AutoUncle

Super price

Good price

Fair price

A bit pricey

Expensive

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Carwow

Used Mercedes GLC300de AMG line 333 HP (244 kW) 2026 Silver SUV
(2026) Mercedes GLC300de AMG line 333 HP
£49,993

Super price

You save £5,607
LS12 6BZ West Yorkshire, West Yorkshire

44 g CO2/km comb. - 333 HP (244 kW) - 1.7 Mpg

Carwow

Used Mercedes GLC300de Urban 333 HP (244 kW) 2026 Grey SUV
(2026) Mercedes GLC300de Urban 333 HP
£49,991

Super price

You save £3,709
LS12 6BZ West Yorkshire, West Yorkshire

43 g CO2/km comb. - 333 HP (244 kW) - 1.7 Mpg

Carwow

Used Mercedes GLC300de Urban 333 HP (244 kW) 2025 Black SUV
(2025) Mercedes GLC300de Urban 333 HP
£45,979

Good price

You save £2,121
SL1 5PR Berkshire, Berkshire

43 g CO2/km comb. - 333 HP (244 kW) - 1.7 Mpg

Carwow

Used Mercedes GLC300de Urban 333 HP (244 kW) 2026 Grey SUV
(2026) Mercedes GLC300de Urban 333 HP
£49,073

Super price

You save £4,627
LS12 6BZ West Yorkshire, West Yorkshire

43 g CO2/km comb. - 333 HP (244 kW) - 1.7 Mpg

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Carwow

Used Mercedes GLC300de Urban 333 HP (244 kW) 2026 Grey SUV
(2026) Mercedes GLC300de Urban 333 HP
£49,083

Super price

You save £4,617
LS12 6BZ West Yorkshire, West Yorkshire

43 g CO2/km comb. - 333 HP (244 kW) - 1.7 Mpg

Carwow

Used Mercedes GLC300de AMG line 333 HP (244 kW) 2026 Blue SUV
(2026) Mercedes GLC300de AMG line 333 HP
£55,990

Fair price

Estimated price £55,333
HP19 8BL Buckinghamshire, Buckinghamshire

45 g CO2/km comb. - 333 HP (244 kW) - 1.7 Mpg

Carwow

Used Mercedes GLC300de Urban 333 HP (244 kW) 2026 Black SUV
(2026) Mercedes GLC300de Urban 333 HP
£47,200

Super price

You save £4,800
RG12 9FR Berkshire, Berkshire

43 g CO2/km comb. - 333 HP (244 kW) - 1.7 Mpg

Carwow

Used Mercedes GLC300de AMG line 306 HP (225 kW) 2022 White SUV
(2022) Mercedes GLC300de AMG line 306 HP
£17,495

Fair price

You save £405
LE10 3DJ Leicestershire, Leicestershire

50 g CO2/km comb. - 306 HP (225 kW) - 1.8 Mpg

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Sandicliffe.co.uk

Used Ford Ranger Wildtrack 240 HP (176 kW) 2025 Frozen white (solid paint) Pickup
(2025) Ford Ranger Wildtrack 240 HP
£33,500

Fair price

Estimated price £32,109
Leicester, Leicestershire

240 HP (176 kW) - 27.4 Mpg

Sandicliffe.co.uk

New BYD Sealion 7 Design 389 kW (530 HP) 2025 Metallic polar white SUV
(2025) BYD Sealion 7 Design 530 HP
£38,000

Good price

You save £1,900
LE2 6BW Leicester, Leicestershire

0 g CO2/km comb. - 389 kW (530 HP) - 21.4 Kwh/100 km

Carwow

Used Audi Q7 Black Edition 286 HP (210 kW) 2021 White SUV
(2021) Audi Q7 Black Edition 286 HP
£35,445

Fair price

You save £855
WC1E 7DP Greater London, London

209 g CO2/km comb. - 286 HP (210 kW) - 35.0 Mpg

Carwow

Used Toyota GR86 235 HP (172 kW) 2022 Grey Coupe
(2022) Toyota GR86 235 HP
£29,800

Fair price

Estimated price £28,486
GU21 4XS Surrey, Surrey

200 g CO2/km comb. - 235 HP (172 kW) - 8.8 Mpg

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Carwow

Used Volvo XC60 Plus 349 HP (256 kW) 2023 Grey SUV
(2023) Volvo XC60 Plus 349 HP
£30,695

Fair price

You save £305
SR5 3JJ Tyne And Wear, Tyne And Wear

23 g CO2/km comb. - 349 HP (256 kW) - 1.0 Mpg

Carwow

Used Land Rover Range Rover 300 HP (220 kW) 2021 Blue SUV
(2021) Land Rover Range Rover 300 HP
£36,433

Good price

You save £1,567
PE20 1JH Kirton, Lincolnshire

228 g CO2/km comb. - 300 HP (220 kW) - 8.5 Mpg

Carwow

Used BMW iX3 M Sport 210 kW (286 HP) 2023 Blue SUV
(2023) BMW iX3 M Sport 286 HP
£34,750

Fair price

Estimated price £33,758
YO304WR, North Yorkshire

0 g CO2/km comb. - 210 kW (286 HP) - 17.6 Kwh/100 km

Carwow

Used BMW X3 M Competition Edition 510 HP (375 kW) 2020 Black SUV
(2020) BMW X3 M Competition Edition 510 HP
£36,000

Good price

You save £1,700
B33 0SJ West Midlands, West Midlands

261 g CO2/km comb. - 510 HP (375 kW) - 10.5 Mpg

Showing 1 - 25 of 68 results

How much does the Mercedes GLC300de depreciate?

Used Mercedes GLC300de

A used Mercedes GLC300de (2026) model loses about £302 per month in value.


Factors that affect the depreciation of a Mercedes GLC300de:
- Mileage driven
- Maintenance
- Service history


Depreciation is an important part of calculating the total cost of owning a Mercedes GLC300de. In addition to the monthly depreciation of £302, you should also factor in fuel costs, road tax, insurance and maintenance (including tyres and car washes) to get the full monthly cost.

How much does a used Mercedes GLC300de cost? Prices, ratings and depreciation by model year

How much does a used Mercedes GLC300de cost? Prices, ratings and depreciation by model year

Model year

Price range*

Avg. Price

Median Mileage

Depreciation
(12 mth.)

Cars for sale

2026 Mercedes GLC300de

£49,075 - £55,996£52,9532,000 miles-£3,62025

2025 Mercedes GLC300de

£45,982 - £59,538£49,7537,400 miles-< 10

2023 Mercedes GLC300de

£33,281 - £36,979£35,56330,800 miles-< 10

2021 Mercedes GLC300de

£19,995 - £33,790£27,15137,600 miles+£28016

2022 Mercedes GLC300de

£19,097 - £31,875£26,32940,600 miles+£360< 10

2020 Mercedes GLC300de

£18,989 - £25,995£23,14349,900 miles-< 10

*The 'Price range' column shows the prices at the 5th and 95th percentiles of cars in the current market

The data is based on the cars currently listed on AutoUncle

Comparison of Mercedes GLC300de variants and prices

Below you can compare prices and depreciation for the 4 most popular Mercedes GLC300de variants. The table is updated daily with data from the market in United Kingdom.

Comparison of Mercedes GLC300de variants and prices

Variant

Price range*

Avg. Price

Median Mileage

Depreciation
(12 mth.)

Cars for sale

Mercedes GLC300de AMG Line Premium Plus

£30,394 - £56,690£49,2642,100 miles+£44013

Mercedes GLC300de Urban

£45,985 - £54,991£49,1993,300 miles-£2,780< 10

Mercedes GLC300de AMG Line Premium

£22,148 - £51,998£33,84831,000 miles-£1,42022
💰 The budget choice

Mercedes GLC300de AMG line

£19,064 - £55,990£33,11741,900 miles+£96024

*The 'Price range' column shows the prices at the 5th and 95th percentiles of cars in the current market

The data is based on the cars currently listed on AutoUncle

Which variant should you choose?

💰 The budget choice

The AMG line is the cheapest entry point with an average price of £33,117.

🏆 The most popular

There are the most AMG line for sale right now (24), which gives you the most options to choose from.

📈 The best value

The AMG line has held its price stable with minimal loss in value over the past year (+£960).

Mercedes GLC300de (model year 2026) - Price development for the last 2 months and price projection for the next 6 months (July 2026 - February 2027)

Monthly price data with average prices and price ranges

Month

Average market price

Lowest market price

Highest market price

Calculation method

2026 - July
£57,800
£54,920£60,680
Estimate
2026 - August
£54,180↘
£50,620£57,720
Estimate
2026 - October
£46,920↘
--
Forecast
2026 - November
£43,300↘
--
Forecast
2026 - December
£39,680↘
--
Forecast
2027 - January
£36,040↘
--
Forecast
2027 - February
£32,420↘
--
Forecast

All estimates and forecasts are based on actual market data

Average Monthly Depreciation

A summary of the past 12 and an estimation of the next 6 months.

Past 12 months

-£3,620

Next 6 months

-£21,760

autouncle-certified

Price checked by AutoUncle

Super price

Good price

Fair price

A bit pricey

Expensive

Used Mercedes GLC300de by body type

Mercedes GLC300de Coupe (9)

Mercedes GLC300de Coupe

9 cars

Mercedes GLC300de Estate (19)

Mercedes GLC300de Estate

19 cars

Mercedes GLC300de SUV (32)

Mercedes GLC300de SUV

32 cars

Used Mercedes GLC300de by fuel

See Mercedes