2018 Audi A3 Cabriolet 1.5 TFSI S Line
Price: £20,990. Fair price: £1,321 (6%) over the AskCar estimate of £19,669, our expected asking price for this car from its model, age, mileage and specification, drawing on 232 priced Audi A3 Cabriolet adverts on AskCar as of 2 November 2026.
AskCar lists 238 used Audi A3 Cabriolet from 206 UK dealerships, as of 2 November 2026.
Overview
- Make: Audi
- Model: A3 Cabriolet
- Trim: S Line
- Version: 1.5 TFSI S Line S tronic FWD Euro 6 2dr (147 bhp)
- Year: 2018
- Mileage: 12,005 miles
- Fuel: Petrol
- Body: Convertible, 2 doors, 4 seats
- Engine: 1.5 litres, 147 bhp
- Gearbox: Automatic (S tronic)
- Drive: Front-wheel drive
- Colour: Silver
- CO2: 118 g/km
- Emissions standard: Euro 6, ULEZ compliant
About this car
This 2018 Audi A3 Cabriolet S Line has covered 12,005 miles. The AskCar estimate for this car is £19,669. It is priced at £20,990, which is £1,321 above that estimate. The AskCar estimate draws on 232 Audi A3 Cabriolet adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. It first appeared in our advert records 6 days ago. According to the government's MOT record, its advertised mileage is consistent with the latest test. The seller is Stratstone Shrewsbury Audi, based in Shrewsbury. How to contact the dealer and its opening hours are on this AskCar page.
Stock data as of 2 November 2026.
Price
Fair price: £1,321 (6%) over the AskCar estimate of £19,669.
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 232 priced Audi A3 Cabriolet adverts across different ages and specifications, as of 2 November 2026.
Time on sale
AskCar first saw this 2018 Audi A3 Cabriolet advertised 6 days ago.
Price history
AskCar first saw this advert on 27 October 2026 at £20,990. 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 2 November 2026: valid until 14 September 2027.
It has had 6 MOTs. The latest, on 15 September 2026, passed.
There were no advisories at the latest test.
Mileage at that test: 12,005 miles, which matches the advertised 12,005 miles.
Similar cars
4 other 2018 Audi A3 Cabriolet S Line 1.5 petrol automatic convertibles are for sale at UK dealers, from £11,290 to £19,995, as of 2 November 2026.
The 3 closest to this car in mileage:
- 2018 Audi A3 Cabriolet S Line, 1.5 petrol convertible, white. Mileage: 23,193 miles. Price: £17,199, £3,791 less than this car. Dealer: cinch Corby in Corby. AskCar page: https://askcar.co.uk/car/audi-a3-cabriolet-2018-2d638923e8d2
- 2018 Audi A3 Cabriolet S Line, 1.5 petrol convertible, white. Mileage: 37,000 miles. Price: £19,995, £995 less than this car. Dealer: Bedford Specialist Cars in Bedford. AskCar page: https://askcar.co.uk/car/audi-a3-cabriolet-2018-abbf129b49cb
- 2018 Audi A3 Cabriolet S Line, 1.5 petrol convertible, grey. Mileage: 84,406 miles. Price: £12,450, £8,540 less than this car. Dealer: NK Car Sales in Sheffield. AskCar page: https://askcar.co.uk/car/audi-a3-cabriolet-2018-401883ad6307
Browse all Audi A3 Cabriolet cars for sale · 2018 Audi A3 Cabriolet price guide
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Photos
1 photo of this car is on its AskCar page.
As of 2 November 2026, AskCar lists 586,270 cars and vans from 12,920 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.