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: 15,987 miles
• Fuel: Petrol
• Body: Convertible, 2 doors, 2 seats
• Engine: 1.5 litres, 129 bhp
• Gearbox: Manual
• Drive: Rear-wheel drive
• Colour: Silver
• CO2: 142 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

At 15,987 miles, this 2018 Mazda MX-5 Sport Nav has covered about 12,900 fewer miles than other 2018 Mazda MX-5 cars. Priced at £15,990, it is advertised £173 below the AskCar estimate of £16,163. The AskCar estimate uses 629 UK dealer adverts for the Mazda MX-5, with adjustments for age, mileage, trim, engine and other specifications. We first saw this car advertised 37 days ago. Its asking price has since fallen by £1,000. According to the government's MOT record, its advertised mileage is consistent with the latest test. The seller is Johnsons Mazda Gloucester, based in Gloucester. 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: £173 (1%) under the AskCar estimate of £16,163.

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 37 days.

Price history

AskCar first saw this advert on 26 September 2026 at £16,990. Its asking price is now £15,990, £1,000 less. The latest price cut was seen on 2 November 2026.

Price changes recorded:

• 26 September 2026: £16,990
• 8 October 2026: £16,890
• 24 October 2026: £16,490
• 2 November 2026: £15,990

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 2 November 2026: valid until 28 March 2027.

It has had 6 MOTs. The latest, on 25 March 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 15,078 miles, which matches the advertised 15,987 miles.

Advertised mileage is about 12,900 miles lower 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 £12,900 to £15,391, as of 2 November 2026.

The 3 closest to this car in mileage:

• 2018 Mazda MX-5 Sport NAV, 1.5 petrol convertible, grey. Mileage: 26,500 miles. Price: £14,499, £1,491 less than this car. Dealer: Fords Of Winsford Car Supermarket in Winsford. AskCar page: https://askcar.co.uk/car/mazda-mx-5-2018-948089084bd1
• 2018 Mazda MX-5 Sport NAV, 1.5 petrol convertible, white. Mileage: 28,691 miles. Price: £14,995, £995 less 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, white. Mileage: 29,000 miles. Price: £15,391, £599 less 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

• The nearest: 2018 Mazda MX-5 Sport NAV, 1.5 petrol convertible, white, 29 miles from this car. Mileage: 50,074 miles. Price: £12,900, £3,090 less than this car. Dealer: Sytner Select Swindon in Swindon. AskCar page: https://askcar.co.uk/car/mazda-mx-5-2018-50688a3ca565