2021 MG MG3 1.5 VTi-TECH Exclusive NAV

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: 37,000 miles
• Fuel: Petrol
• Body: Hatchback, 5 doors, 5 seats
• Engine: 1.5 litres, 105 bhp
• Gearbox: Manual
• Drive: Front-wheel drive
• Colour: Red
• CO2: 147 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 MG MG3 Exclusive Nav is advertised with 37,000 miles, approximately 6,300 above the typical mileage for its age. The AskCar estimate for this car is £7,835. It is priced at £7,500, which is £335 below that estimate. To work out the AskCar estimate, we analyse UK dealer adverts for 1,789 MG MG3 cars across different ages and specifications. We first saw this car advertised 147 days ago. Its asking price has since fallen by £500. According to the government's MOT record, its advertised mileage is consistent with the latest test. The seller is Monks Cross Used Cars, based in Monks Cross. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 4 November 2026.

How we estimate prices and check cars

Price

Fair price: £335 (4%) under the AskCar estimate of £7,835.

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 1,789 priced MG MG3 adverts across different ages and specifications, as of 4 November 2026.

A 2021 MG MG3 with the 1.5 petrol engine is typically advertised at £8,000: the median of the 46 for sale on AskCar, as of 4 November 2026.

Time on sale

This 2021 MG MG3 has been on sale for at least 147 days.

Price history

AskCar first saw this advert on 10 June 2026 at £8,000. Its asking price is now £7,500, £500 less. The latest price cut was seen on 11 October 2026.

Price changes recorded:

• 7 July 2026: £8,000
• 25 September 2026: £7,750
• 11 October 2026: £7,500

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 4 November 2026: valid until 17 February 2027.

It failed its MOT on 5 February 2026 (parking brake efficiency below requirements) and passed 1 day later, on 6 February 2026.

There were no advisories at the latest test.

Mileage at that test: 35,630 miles, which matches the advertised 37,000 miles.

Advertised mileage is about 6,300 miles higher than the median mileage of a 2021 MG MG3 on AskCar.

Similar cars

32 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 4 November 2026.

The 3 closest to this car in mileage:

• 2021 MG MG3 Exclusive NAV, 1.5 petrol hatchback, black. Mileage: 37,130 miles. Price: £7,594, £94 more than this car. Dealer: Eddie Wright Car Supermarket in Scunthorpe. AskCar page: https://askcar.co.uk/car/mg-mg3-2021-a8bd237eef3f
• 2021 MG MG3 Exclusive NAV, 1.5 petrol hatchback, white. Mileage: 36,668 miles. Price: £7,499, the same price as this car. Dealer: Mayesbrook Autos in Barking. AskCar page: https://askcar.co.uk/car/mg-mg3-2021-3fde4a3078c7
• 2021 MG MG3 Exclusive NAV, 1.5 petrol hatchback, silver. Mileage: 35,988 miles. Price: £7,990, £490 more than this car. Dealer: Toccar in Barton-upon-Humber. AskCar page: https://askcar.co.uk/car/mg-mg3-2021-9818d0ddc3c9

• The nearest: 2021 MG MG3 Exclusive NAV, 1.5 petrol hatchback, white, 18 miles from this car. Mileage: 19,586 miles. Price: £9,000, £1,500 more than this car. Dealer: Carlingo in Harrogate. AskCar page: https://askcar.co.uk/car/mg-mg3-2021-194071f19ffd