2018 Audi A5 Cabriolet 2.0 TFSI S Line

Overview

• Make: Audi
• Model: A5 Cabriolet
• Trim: S Line
• Version: 2.0 TFSI S Line Manual FWD Euro 6 (s/s) 2dr (187 bhp)
• Year: 2018
• Mileage: 28,000 miles
• Fuel: Petrol
• Body: Convertible, 2 doors, 4 seats
• Engine: 2.0 litres, 187 bhp
• Gearbox: Manual
• Drive: Front-wheel drive
• Colour: Grey
• CO2: 137 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

At 28,000 miles, this 2018 Audi A5 Cabriolet S Line has covered about 28,000 fewer miles than other 2018 Audi A5 Cabriolet cars. Priced at £19,940, it is advertised £4,532 above the AskCar estimate of £15,408. The AskCar estimate uses 207 UK dealer adverts for the Audi A5 Cabriolet, with adjustments for age, mileage, trim, engine and other specifications. We first recorded this car for sale 83 days ago. Its advertised mileage matches the government's MOT record. The seller is Smith Premier, based in Dacorum. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 5 November 2026.

How we estimate prices and check cars

Price

Above the going rate: £4,532 (29%) over the AskCar estimate of £15,408.

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 207 priced Audi A5 Cabriolet adverts across different ages and specifications, as of 5 November 2026.

A 2018 Audi A5 Cabriolet with the 2.0 petrol engine is typically advertised at £14,600: the median of the 20 for sale on AskCar, as of 5 November 2026.

Time on sale

This 2018 Audi A5 Cabriolet has been on sale for at least 83 days.

Price history

AskCar first saw this advert on 14 August 2026 at £19,940. Its asking price has not changed.

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 5 November 2026: valid until 14 May 2027.

It failed its MOT on 14 May 2026 (offside rear coil spring fractured or broken) and passed 1 day later, on 15 May 2026.

There were no advisories at the latest test.

Mileage at that test: 28,107 miles, which matches the advertised 28,000 miles.

Advertised mileage is about 28,000 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 manual convertibles are for sale at UK dealers, from £11,700 to £14,995, as of 5 November 2026.

The 3 closest to this car in mileage:

• 2018 Audi A5 Cabriolet S Line, 2.0 petrol convertible, grey. Mileage: 24,700 miles. Price: £14,995, £4,945 less than this car. Dealer: Longmans Motors in Basildon. AskCar page: https://askcar.co.uk/car/audi-a5-cabriolet-2018-b6be03e14667
• 2018 Audi A5 Cabriolet S Line, 2.0 petrol convertible, black. Mileage: 37,409 miles. Price: £14,150, £5,790 less than this car. Dealer: Car Planet Watford in Watford. AskCar page: https://askcar.co.uk/car/audi-a5-cabriolet-2018-008e9a250ae8
• 2018 Audi A5 Cabriolet S Line, 2.0 petrol convertible, white. Mileage: 44,069 miles. Price: £13,100, £6,840 less than this car. Dealer: Car Planet Watford in Watford. AskCar page: https://askcar.co.uk/car/audi-a5-cabriolet-2018-4860ea0136d6