2021 MG MG3 1.5 VTi-TECH Exclusive NAV

Price: £7,150. Fair price: £509 (6%) under the AskCar estimate of £7,659, our expected asking price for this car from its model, age, mileage and specification, drawing on 1,733 priced MG MG3 adverts on AskCar as of 2 November 2026.

AskCar lists 1,784 used MG MG3 from 655 UK dealerships, as of 2 November 2026.

Overview

  • Make: MG
  • Model: MG3
  • Trim: Exclusive NAV
  • Version: 1.5 VTi Tech Exclusive NAV Manual FWD Euro 6 (s/s) 5dr (105 bhp)
  • Year: 2021
  • Mileage: 41,227 miles
  • Fuel: Petrol
  • Body: Hatchback, 5 doors, 5 seats
  • Engine: 1.5 litres, 105 bhp
  • Gearbox: Manual
  • Drive: Front-wheel drive
  • Colour: White
  • CO2: 147 g/km
  • Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 MG MG3 Exclusive Nav is advertised with 41,227 miles, approximately 10,900 above the typical mileage for its age. The AskCar estimate for this car is £7,659. It is priced at £7,150, which is £509 below that estimate. The AskCar estimate draws on 1,733 MG MG3 adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. We first saw this car advertised 136 days ago. Its asking price has since fallen by £500. We checked its advertised mileage against the government's MOT record, and they match. You can find this car at Big Car World - St. Margarets in Leicester. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 2 November 2026.

How we estimate prices and check cars

Price

Fair price: £509 (6%) under the AskCar estimate of £7,659.

The AskCar estimate is our expected asking price for this car. It uses UK dealer asking prices, accounting for make, model, trim, version, age, mileage, fuel, gearbox, body type, driven wheels, engine size and power. It is an advertised price, not a confirmed sale price.

It draws on 1,733 priced MG MG3 adverts across different ages and specifications, as of 2 November 2026.

A 2021 MG MG3 with the 1.5 petrol engine is typically advertised at £8,000: the median of the 45 for sale on AskCar, as of 2 November 2026.

Time on sale

This 2021 MG MG3 has been on sale for at least 136 days.

Price history

AskCar first saw this advert on 19 June 2026 at £7,650. Its asking price is now £7,150, £500 less. The latest price cut was seen on 15 October 2026.

Price changes recorded:

  • 19 June 2026: £7,650
  • 29 July 2026: £7,600
  • 14 August 2026: £7,550
  • 23 August 2026: £7,500
  • 30 August 2026: £7,400
  • 16 September 2026: £7,300
  • 24 September 2026: £7,200
  • 9 October 2026: £7,150
  • 15 October 2026: £7,000
  • 24 October 2026: £7,150

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 2 November 2026: valid until 17 January 2027.

It has had 5 MOTs. The latest, on 5 January 2026, passed.

Advisories at the latest test: front tyres starting to wear edges.

Mileage at that test: 36,902 miles, which matches the advertised 41,227 miles.

Advertised mileage is about 10,900 miles higher than the median mileage of a 2021 MG MG3 on AskCar.

Similar cars

31 other 2021 MG MG3 Exclusive NAV 1.5 petrol manual hatchbacks are for sale at UK dealers, from £5,000 to £9,799, as of 2 November 2026.

The 3 closest to this car in mileage:

  • 2021 MG MG3 Exclusive NAV, 1.5 petrol hatchback, silver. Mileage: 43,519 miles. Price: £7,740, £590 more than this car. Dealer: Dace Motor Company - Trading Standards Approved in Stockport. AskCar page: https://askcar.co.uk/car/mg-mg3-2021-07f11eb1c943
  • 2021 MG MG3 Exclusive NAV, 1.5 petrol hatchback, yellow. Mileage: 45,300 miles. Price: £7,999, £849 more than this car. Dealer: Cheshire Automotive in Helsby. AskCar page: https://askcar.co.uk/car/mg-mg3-2021-9640a79e7746
  • 2021 MG MG3 Exclusive NAV, 1.5 petrol hatchback, black. Mileage: 37,130 miles. Price: £7,594, £444 more than this car. Dealer: Eddie Wright Car Supermarket in Scunthorpe. AskCar page: https://askcar.co.uk/car/mg-mg3-2021-a8bd237eef3f
  • The nearest: 2021 MG MG3 Exclusive NAV, 1.5 petrol hatchback, white, under a mile from this car. Mileage: 30,682 miles. Price: £7,850, £700 more than this car. Dealer: Big Car World - St. Margarets in Leicester. AskCar page: https://askcar.co.uk/car/mg-mg3-2021-f0f36c716bdf

Browse all MG MG3 cars for sale · 2021 MG MG3 price guide

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Photos

27 photos of this car are on its AskCar page.

As of 2 November 2026, AskCar lists 586,270 cars and vans from 12,920 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.