2018 Mazda MX-5 1.5 SKYACTIV-G Sport NAV

Overview

• Make: Mazda
• Model: MX-5
• Trim: Sport NAV
• Version: 1.5 SKYACTIV-G Sport NAV Manual RWD Euro 6 2dr (129 bhp)
• Year: 2018
• Mileage: 50,074 miles
• Fuel: Petrol
• Body: Convertible, 2 doors, 2 seats
• Engine: 1.5 litres, 129 bhp
• Gearbox: Manual
• Drive: Rear-wheel drive
• Colour: White
• CO2: 139 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2018 Mazda MX-5 Sport Nav is advertised with 50,074 miles, approximately 21,200 above the typical mileage for its age. Priced at £12,900, it is advertised £355 below the AskCar estimate of £13,255. To work out the AskCar estimate, we analyse UK dealer adverts for 629 Mazda MX-5 cars across different ages and specifications. We first recorded this advert 58 days ago, and its asking price has since fallen by £4,638. According to the government's MOT record, its advertised mileage is consistent with the latest test. The seller is Sytner Select Swindon, based in Swindon. 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: £355 (2%) under the AskCar estimate of £13,255.

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 629 priced Mazda MX-5 adverts across different ages and specifications, as of 2 November 2026.

A 2018 Mazda MX-5 with the 1.5 petrol engine is typically advertised at £14,500: the median of the 11 for sale on AskCar, as of 2 November 2026.

Time on sale

This 2018 Mazda MX-5 has been on sale for at least 58 days.

Price history

AskCar first saw this advert on 5 September 2026 at £17,538. Its asking price is now £12,900, £4,638 less. The latest price cut was seen on 23 October 2026.

Price changes recorded:

• 5 September 2026: £17,538
• 8 September 2026: £13,900
• 1 October 2026: £13,500
• 15 October 2026: £13,200
• 23 October 2026: £12,900

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 2 November 2026: valid until 7 May 2027.

It failed its MOT on 6 May 2026 (nearside rear registration plate lamp does not illuminate simultaneously with the position lamps) and passed later the same day.

There were no advisories at the latest test.

Mileage at that test: 49,065 miles, which matches the advertised 50,074 miles.

Advertised mileage is about 21,200 miles higher than the median mileage of a 2018 Mazda MX-5 on AskCar.

Similar cars

4 other 2018 Mazda MX-5 Sport NAV 1.5 petrol manual convertibles are for sale at UK dealers, from £14,499 to £15,990, as of 2 November 2026.

The 3 closest to this car in mileage:

• 2018 Mazda MX-5 Sport NAV, 1.5 petrol convertible, white. Mileage: 29,000 miles. Price: £15,391, £2,491 more than this car. Dealer: Prestige Cars by Peter Cooper West End in Southampton. AskCar page: https://askcar.co.uk/car/mazda-mx-5-2018-f3648ca8ba06
• 2018 Mazda MX-5 Sport NAV, 1.5 petrol convertible, white. Mileage: 28,691 miles. Price: £14,995, £2,095 more than this car. Dealer: Vertu Honda Doncaster in Doncaster. AskCar page: https://askcar.co.uk/car/mazda-mx-5-2018-c28037198921
• 2018 Mazda MX-5 Sport NAV, 1.5 petrol convertible, grey. Mileage: 26,500 miles. Price: £14,499, £1,599 more than this car. Dealer: Fords Of Winsford Car Supermarket in Winsford. AskCar page: https://askcar.co.uk/car/mazda-mx-5-2018-948089084bd1

• The nearest: 2018 Mazda MX-5 Sport NAV, 1.5 petrol convertible, silver, 29 miles from this car. Mileage: 15,987 miles. Price: £15,990, £3,090 more than this car. Dealer: Johnsons Mazda Gloucester in Gloucester. AskCar page: https://askcar.co.uk/car/mazda-mx-5-2018-3dbe5650c0b3