Used diesel Mercedes-Benz GLC for sale near Watford
There are 214 used diesel Mercedes-Benz GLC for sale from UK dealers within 20 miles of Watford on AskCar, as of 30 October 2026. Typical asking price £19,800 (the median: half cost less, half cost more). The cheapest is £9,400. AskCar lists 2,853 used Mercedes-Benz GLC across the UK, from 1,159 dealerships.
The middle half of the 214 cars are priced between £16,500 and £25,000.
As of 30 October 2026, AskCar lists 580,490 cars and vans from 12,695 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.
Price reductions near Watford
95 cars within 20 miles had their price reduced in the last 14 days to 30 October 2026. Of those priced between £1,000 and £60,000, these 8 have the biggest reductions in pounds since AskCar first saw them.
- 2019 Mercedes-Benz GLC 2.0 GLC220d AMG Line, 191 bhp, automatic, diesel, SUV, 5 doors, black. Mileage: 49,335 miles. Price: £19,970, reduced by £5,940 from £25,910 since AskCar first saw it on 16 October 2026, 14 days ago. Fair price: £678 (3%) under the AskCar estimate of £20,648. Euro 6 emissions standard. ULEZ compliant. MOT: valid until 29 September 2027. Dealer: Big Motoring World Enfield in Enfield, 15 miles from Watford. AskCar page: https://askcar.co.uk/car/mercedes-benz-glc-2019-02acb48bf36d
- 2025 Mercedes-Benz GLC 2.0 GLC220dh MHEV AMG Line, 217 bhp, automatic, diesel, SUV, 5 doors, blue. Mileage: 23,269 miles. Price: £34,195, reduced by £5,798 from £39,993 since AskCar first saw it on 24 August 2026, 67 days ago. Fair price: £1,268 (3%) under the AskCar estimate of £35,463. Euro 6 emissions standard. ULEZ compliant. MOT: first test not yet due. Dealer: Group 1 Automotive Mercedes-Benz Hemel Hempstead in Hemel Hempstead, 6 miles from Watford. AskCar page: https://askcar.co.uk/car/mercedes-benz-glc-2025-195a19d9a1f5
- 2025 Mercedes-Benz GLC 2.0 AMG Line Premium, automatic, diesel, SUV, 5 doors, blue. Mileage: 10,434 miles. Price: £41,850, reduced by £4,650 from £46,500 since AskCar first saw it on 4 August 2026, 87 days ago. Fair price: £580 (1%) under the AskCar estimate of £42,430. Euro 6 emissions standard. ULEZ compliant. MOT: first test not yet due. Dealer: Sytner Group Mercedes-Benz of West London in London, 12 miles from Watford. AskCar page: https://askcar.co.uk/car/mercedes-benz-glc-2025-cb127b47df18
- 2025 Mercedes-Benz GLC 2.0 AMG Line, automatic, diesel, estate, 5 doors, white. Mileage: 12,631 miles. Price: £36,637, reduced by £4,193 from £40,830 since AskCar first saw it on 20 August 2026, 71 days ago. Good value: £3,725 (9%) under the AskCar estimate of £40,362. Euro 6 emissions standard. ULEZ compliant. MOT: first test not yet due. Dealer: Vertu Mercedes Slough in Slough, 14 miles from Watford. AskCar page: https://askcar.co.uk/car/mercedes-benz-glc-2025-3776e003139b
- 2023 Mercedes-Benz GLC 2.0 GLC300dh MHEV AMG Line Premium Plus, 288 bhp, automatic, diesel, SUV, 5 doors, grey. Mileage: 9,100 miles. Price: £41,250, reduced by £3,750 from £45,000 since AskCar first saw it on 8 August 2026, 83 days ago. Fair price: £778 (1%) under the AskCar estimate of £42,028. Euro 6 emissions standard. ULEZ compliant. Dealer: Sytner Group Mercedes-Benz of Watford in Watford, 1 mile from Watford. AskCar page: https://askcar.co.uk/car/mercedes-benz-glc-2023-ae602c5e1b0c
- 2020 Mercedes-Benz GLC 2.0 GLC300d AMG Line Premium Plus, 242 bhp, automatic, diesel, SUV, 5 doors, white. Mileage: 18,166 miles. Price: £27,600, reduced by £3,450 from £31,050 since AskCar first saw it on 23 July 2026, 99 days ago. Fair price: £2,045 (6%) under the AskCar estimate of £29,645. Euro 6 emissions standard. ULEZ compliant. MOT: valid until 23 July 2027. Dealer: Car Planet Barnet in Barnet, 11 miles from Watford. AskCar page: https://askcar.co.uk/car/mercedes-benz-glc-2020-b80b1077f826
- 2024 Mercedes-Benz GLC 2.0 AMG Line Premium, automatic, diesel, SUV, 5 doors, red. Mileage: 2,040 miles. Price: £40,750, reduced by £3,240 from £43,990 since AskCar first saw it on 1 October 2026, 29 days ago. Fair price: £1,668 (3%) under the AskCar estimate of £42,418. Euro 6 emissions standard. ULEZ compliant. MOT: first test not yet due. Dealer: Group 1 Automotive Mercedes-Benz Hemel Hempstead in Hemel Hempstead, 6 miles from Watford. AskCar page: https://askcar.co.uk/car/mercedes-benz-glc-2024-9b2b45f01459
- 2018 Mercedes-Benz GLC 2.1 GLC250d AMG Line Premium Plus, 201 bhp, automatic, diesel, SUV, 5 doors, silver. Mileage: 60,470 miles. Price: £16,600, reduced by £3,050 from £19,650 since AskCar first saw it on 5 July 2026, 117 days ago. Good value: £1,926 (10%) under the AskCar estimate of £18,526. Euro 6 emissions standard. ULEZ compliant. MOT: valid until 12 February 2027. Dealer: Car Planet Watford in Watford, 1 mile from Watford. AskCar page: https://askcar.co.uk/car/mercedes-benz-glc-2018-ab5b3217289f
Median asking price by year
| Year | For sale with a price | Median asking price | Middle half priced between |
|---|---|---|---|
| 2020 | 23 | £22,000 | £20,000 to £25,500 |
| 2019 | 49 | £20,000 | £18,000 to £21,500 |
| 2018 | 42 | £17,000 | £15,800 to £18,500 |
| 2017 | 25 | £16,700 | £15,000 to £18,500 |
| 2016 | 23 | £13,500 | £12,500 to £16,400 |
Cars for sale now, page 3 of 3
Best value first: the cars priced furthest below their AskCar estimate come first, and those without one come after. The AskCar estimate is our expected asking price for that one car, from its model, age, mileage and specification, using the 2,819 priced Mercedes-Benz GLC adverts on AskCar as of 30 October 2026.
Each car: year, make, model, engine and trim, power, gearbox, fuel, body, doors, colour; mileage; price and its changes; how the price compares with the AskCar estimate; emissions standard and ULEZ compliance where it holds; MOT; dealer, town and distance; AskCar page.
Cheaper cars like each one, with its price history, are on its AskCar page.
- 2017 Mercedes-Benz GLC 2.1 AMG Line Premium, automatic, diesel, SUV, 5 doors, blue. Mileage: 43,296 miles. Price: £21,650, reduced by £600 from £22,250 since AskCar first saw it on 1 October 2026, 29 days ago. Above the going rate: £2,666 (14%) over the AskCar estimate of £18,984. Euro 6 emissions standard. ULEZ compliant. MOT: valid until 29 November 2026. Dealer: Sytner Group Mercedes-Benz of West London in London, 12 miles from Watford. AskCar page: https://askcar.co.uk/car/mercedes-benz-glc-2017-915994a94295
- 2019 Mercedes-Benz GLC 2.0 GLC220d AMG Line Premium, 191 bhp, automatic, diesel, SUV, 5 doors, red. Mileage: 122,821 miles. Price: £17,985, raised by £700 from £17,285 since AskCar first saw it on 19 September 2026, 41 days ago. Above the going rate: £2,418 (15%) over the AskCar estimate of £15,567. Euro 6 emissions standard. ULEZ compliant. MOT: the latest record we hold ran out on 10 October 2026; ask the dealer for the current MOT. Dealer: IM Car Supermarket in Dunstable, 17 miles from Watford. AskCar page: https://askcar.co.uk/car/mercedes-benz-glc-2019-01fd524b8969
- 2020 Mercedes-Benz GLC 2.0 GLC220d AMG Line Premium, 191 bhp, automatic, diesel, SUV, 5 doors, black. Mileage: 58,000 miles. Price: £24,995, reduced by £2,000 from £26,995 since AskCar first saw it on 31 August 2026, 60 days ago. Above the going rate: £3,380 (15%) over the AskCar estimate of £21,615. Euro 6 emissions standard. ULEZ compliant. MOT: valid until 27 November 2026. Dealer: AH Specialist Cars in Watford, 1 mile from Watford. AskCar page: https://askcar.co.uk/car/mercedes-benz-glc-2020-cc8c9d9a97a3
- 2020 Mercedes-Benz GLC 2.0 AMG Line Premium Plus, automatic, diesel, SUV, 5 doors, black. Mileage: 52,250 miles. Price: £29,995, unchanged since AskCar first saw it on 28 May 2026, 155 days ago. Above the going rate: £4,448 (17%) over the AskCar estimate of £25,547. Euro 6 emissions standard. ULEZ compliant. MOT: valid until 3 July 2027. Dealer: A1 Auto Solutions in Maidenhead, 16 miles from Watford. AskCar page: https://askcar.co.uk/car/mercedes-benz-glc-2020-7cf43a31a0e1
- 2018 Mercedes-Benz GLC 2.1 GLC220d AMG Line Premium, 168 bhp, automatic, diesel, SUV, 5 doors, black. Mileage: 65,717 miles. Price: £21,500. AskCar first saw it on 13 June 2026, 139 days ago. Above the going rate: £3,444 (19%) over the AskCar estimate of £18,056. Euro 6 emissions standard. ULEZ compliant. MOT: valid until 7 November 2026. Dealer: Mega Motor Store in London, 20 miles from Watford. AskCar page: https://askcar.co.uk/car/mercedes-benz-glc-2018-42c3eb7ebfe2
- 2020 Mercedes-Benz GLC 1.9 AMG Line, automatic, diesel, estate, 5 doors, blue. Mileage: 59,000 miles. Price: £27,191, reduced by £284 from £27,475 since AskCar first saw it on 14 October 2026, 16 days ago. Above the going rate: £4,585 (20%) over the AskCar estimate of £22,606. Euro 6 emissions standard. ULEZ compliant. Dealer: Vertu Mercedes Slough in Slough, 14 miles from Watford. AskCar page: https://askcar.co.uk/car/mercedes-benz-glc-2020-a0932b3a52cd
- 2018 Mercedes-Benz GLC 2.1 GLC250d AMG Line Premium, 201 bhp, automatic, diesel, SUV, 5 doors, black. Mileage: 76,000 miles. Price: £21,995, unchanged since AskCar first saw it on 1 July 2026, 121 days ago. Above the going rate: £3,850 (21%) over the AskCar estimate of £18,145. Euro 6 emissions standard. ULEZ compliant. MOT: valid until 26 January 2027. Dealer: Prestigio Motor Company in Watford, 1 mile from Watford. AskCar page: https://askcar.co.uk/car/mercedes-benz-glc-2018-6365845a7a8f
- 2024 Mercedes-Benz GLC 2.0 GLC220dh MHEV AMG Line, 217 bhp, automatic, diesel, SUV, 5 doors, white. Mileage: 8,414 miles. Price: £49,650, reduced by £100 from £49,750 since AskCar first saw it on 14 October 2026, 16 days ago. Above the going rate: £9,955 (25%) over the AskCar estimate of £39,695. Euro 6 emissions standard. ULEZ compliant. MOT: first test not yet due. Dealer: Sytner Group Mercedes-Benz of West London in London, 12 miles from Watford. AskCar page: https://askcar.co.uk/car/mercedes-benz-glc-2024-8a92bfe0d979
- 2023 Mercedes-Benz GLC 2.0 GLC220dh MHEV AMG Line, 217 bhp, automatic, diesel, SUV, 5 doors, silver. Mileage: 13,125 miles. Price: £48,850, unchanged since AskCar first saw it on 29 October 2026, 1 day ago. Above the going rate: £10,469 (27%) over the AskCar estimate of £38,381. Euro 6 emissions standard. ULEZ compliant. MOT: valid until 6 September 2027. Dealer: Sytner Group Mercedes-Benz of Temple Fortune in Camden, 10 miles from Watford. AskCar page: https://askcar.co.uk/car/mercedes-benz-glc-2023-92c47050c860
- 2017 Mercedes-Benz GLC 2.1 GLC250d AMG Line, 201 bhp, automatic, diesel, SUV, 5 doors, black. Mileage: 52,000 miles. Price: £24,995, unchanged since AskCar first saw it on 29 July 2026, 93 days ago. Above the going rate: £5,564 (28%) over the AskCar estimate of £19,431. Euro 6 emissions standard. ULEZ compliant. Dealer: Pitstop Cars in Luton, 17 miles from Watford. AskCar page: https://askcar.co.uk/car/mercedes-benz-glc-2017-9299362a2e55
- 2025 Mercedes-Benz GLC 2.0 GLC220dh MHEV AMG Line, 217 bhp, automatic, diesel, SUV, 5 doors, black. Mileage: 3,266 miles. Price: £54,850, reduced by £1,650 from £56,500 since AskCar first saw it on 10 September 2026, 50 days ago. Above the going rate: £15,672 (40%) over the AskCar estimate of £39,178. Euro 6 emissions standard. ULEZ compliant. MOT: first test not yet due. Dealer: Sytner Group Mercedes-Benz of Watford in Watford, 1 mile from Watford. AskCar page: https://askcar.co.uk/car/mercedes-benz-glc-2025-70c1d0c14298
- 2018 Mercedes-Benz GLC 2.1 GLC220d AMG Line, 168 bhp, automatic, diesel, SUV, 5 doors, silver. Mileage: 74,440 miles. Price: £11,500, unchanged since AskCar first saw it on 27 September 2026, 33 days ago. Far below the going rate: £4,468 (27%) under the AskCar estimate of £15,968. Worth asking the dealer why. Euro 6 emissions standard. ULEZ compliant. Dealer: Berkeley Motor Group in Greenford, 9 miles from Watford. AskCar page: https://askcar.co.uk/car/mercedes-benz-glc-2018-9436a9d30698
- 2016 Mercedes-Benz GLC 2.1 AMG Line, automatic, diesel, SUV, 5 doors, white. Mileage: 89,808 miles. Price: £13,490, unchanged since AskCar first saw it on 16 October 2026, 14 days ago. Fair price: £414 (3%) over the AskCar estimate of £13,076. Euro 6 emissions standard. ULEZ compliant. MOT: the latest record we hold ran out on 29 September 2026; ask the dealer for the current MOT. Dealer: Csg Motor Company in Chalfont St Giles, 8 miles from Watford. AskCar page: https://askcar.co.uk/car/mercedes-benz-glc-2016-302510ce924c
- 2021 Mercedes-Benz GLC 2.0 AMG Line Premium Plus, automatic, diesel, SUV, 5 doors, grey. Mileage: 36,797 miles. Price: £31,495, unchanged since AskCar first saw it on 29 October 2026, 1 day ago. Fair price: £1,819 (6%) over the AskCar estimate of £29,676. Euro 6 emissions standard. ULEZ compliant. MOT: valid until 28 February 2027. Dealer: A1 Auto Solutions in Maidenhead, 16 miles from Watford. AskCar page: https://askcar.co.uk/car/mercedes-benz-glc-2021-9cd38113adbc
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Mercedes-Benz GLC near Watford by price
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