2018 Audi A5 Cabriolet 2.0 TFSI S Line

Overview

• Make: Audi
• Model: A5 Cabriolet
• Trim: S Line
• Version: 2.0 TFSI 40 S Line S tronic FWD Euro 6 (s/s) 2dr (187 bhp)
• Year: 2018
• Mileage: 32,589 miles
• Fuel: Petrol
• Body: Convertible, 2 doors, 4 seats
• Engine: 2.0 litres, 187 bhp
• Gearbox: Automatic (S tronic)
• Drive: Front-wheel drive
• Colour: Black
• CO2: 140 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2018 Audi A5 Cabriolet S Line has covered 32,589 miles, around 14,900 fewer miles than is typical for its age. The dealer is asking £16,790, which is £127 below the AskCar estimate of £16,917. To work out the AskCar estimate, we analyse UK dealer adverts for 211 Audi A5 Cabriolet cars across different ages and specifications. Since we first spotted the advert 158 days ago, the asking price has dropped by £700. Our latest MOT record expired on 21 October 2026. Check the current position with the dealer. We checked its advertised mileage against the government's MOT record, and they match. The seller is NFS Autos, based in Bromley. 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: £127 (under 1%) under the AskCar estimate of £16,917.

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 211 priced Audi A5 Cabriolet adverts across different ages and specifications, as of 2 November 2026.

A 2018 Audi A5 Cabriolet with the 2.0 petrol engine is typically advertised at £14,800: the median of the 20 for sale on AskCar, as of 2 November 2026.

Time on sale

This 2018 Audi A5 Cabriolet has been on sale for at least 158 days.

Price history

AskCar first saw this advert on 28 May 2026 at £17,490. Its asking price is now £16,790, £700 less. The latest price cut was seen on 12 October 2026.

Price changes recorded:

• 29 May 2026: £17,490
• 27 July 2026: £17,990
• 27 September 2026: £17,190
• 12 October 2026: £16,790

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 2 November 2026: the latest record we hold ran out on 21 October 2026; ask the dealer for the current MOT.

It has had 5 MOTs. The latest, on 22 October 2025, passed.

There were no advisories at the latest test.

Mileage at that test: 32,525 miles, which matches the advertised 32,589 miles.

Advertised mileage is about 14,900 miles lower than the median mileage of a 2018 Audi A5 Cabriolet on AskCar.

Similar cars

6 other 2018 Audi A5 Cabriolet S Line 2.0 petrol automatic convertibles are for sale at UK dealers, from £10,000 to £20,899, as of 2 November 2026.

The 3 closest to this car in mileage:

• 2018 Audi A5 Cabriolet S Line, 2.0 petrol convertible, black. Mileage: 29,540 miles. Price: £16,995, £205 more than this car. Dealer: Rodden Road Cars in Frome. AskCar page: https://askcar.co.uk/car/audi-a5-cabriolet-2018-cf31b86da261
• 2018 Audi A5 Cabriolet S Line, 2.0 petrol convertible, grey. Mileage: 28,050 miles. Price: £20,899, £4,109 more than this car. Dealer: Eastern Western Motor Group Car Deal Warehouse Superstore Newbridge in Edinburgh. AskCar page: https://askcar.co.uk/car/audi-a5-cabriolet-2018-b1336936f687
• 2018 Audi A5 Cabriolet S Line, 2.0 petrol convertible, grey. Mileage: 47,700 miles. Price: £15,599, £1,191 less than this car. Dealer: Fords Of Winsford Car Supermarket in Winsford. AskCar page: https://askcar.co.uk/car/audi-a5-cabriolet-2018-0913e5292495

• The nearest: 2018 Audi A5 Cabriolet S Line, 2.0 petrol convertible, black, 38 miles from this car. Mileage: 65,000 miles. Price: £16,650, £140 less than this car. Dealer: Peverel Car Company in Wickham Bishops. AskCar page: https://askcar.co.uk/car/audi-a5-cabriolet-2018-5ac3923e4124