Sort

(S-Line) Audi A3 used • 125 cars for sale – Compares prices!

Featured deals

heycar

Audi A3 35 TFSI S Line 5dr S Tronic

£23,900

Fair price

You save £300

Northampton NN5 5DH, UK

148 HP (108 kW)

heycar

Audi A3 35 TFSI S Line 4dr

£24,200

Fair price

You save £100

Papyrus Rd, Peterborough PE4 5BH, UK

133 g CO2/km comb. - 148 HP (108 kW) - 47.9 Mpg

heycar

Audi A3 Saloon 35 TFSI S line 4dr S Tronic

£20,900

Fair price

Estimated price £20,500

Washingley Rd, Huntingdon PE29 6WP, UK

148 HP (108 kW)

heycar

Audi A3 35 TFSI S Line 5dr S Tronic

£24,700

Fair price

Estimated price £23,970

Babraham Rd, Cambridge CB22 3AY, UK

148 HP (108 kW)

heycar

Audi A3 35 TFSI S Line 5dr S Tronic

£26,400

Fair price

Estimated price £25,565

Babraham Rd, Cambridge CB22 3AY, UK

148 HP (108 kW)

heycar

Audi A3 Saloon 35 TFSI S Line 4dr S Tronic

£24,995

Fair price

You save £5

166 Dunkeld Rd, Perth PH1, UK

148 HP (108 kW)

heycar

Audi A3 35 TFSI S Line 5dr S Tronic

£24,300

Fair price

Estimated price £23,307

Northampton NN5 5DH, UK

148 HP (108 kW)

heycar

Audi A3 35 TFSI S Line 5dr Hatchback

£21,500

Fair price

Estimated price £21,009

Northampton NN5 5DH, UK

137 g CO2/km comb. - 148 HP (108 kW)

heycar

Audi A3 35 TFSI S Line 5dr S Tronic

£21,900

Fair price

Estimated price £21,128

Washingley Rd, Huntingdon PE29 6WP, UK

148 HP (108 kW)

heycar

Audi A3 35 TFSI S Line 5dr S Tronic

£24,900

Fair price

Estimated price £24,288

Babraham Rd, Cambridge CB22 3AY, UK

148 HP (108 kW)

heycar

Audi A3 Saloon 35 TFSI Sport 4dr

£19,386

Super price

You save £3,514

Bedford MK42 9XE, UK

128 g CO2/km comb. - 148 HP (108 kW)

heycar

Audi A3 Saloon 35 TFSI Sport 4dr S Tronic

£19,400

Good price

You save £1,400

Washingley Rd, Huntingdon PE29 6WP, UK

148 HP (108 kW)

heycar

Audi A3 35 TFSI S line 5dr S Tronic

£19,300

Fair price

You save £200

Papyrus Rd, Peterborough PE4 5BH, UK

148 HP (108 kW)

heycar

Audi A3 30 TFSI S Line 5dr

£17,900

Fair price

Estimated price £17,158

Washingley Rd, Huntingdon PE29 6WP, UK

132 g CO2/km comb. - 109 HP (80 kW)

heycar

Audi A3 35 TFSI Technik 5dr Hatchback

£17,900

Good price

You save £1,500

Bedford MK42 9XE, UK

132 g CO2/km comb. - 148 HP (108 kW)

heycar

Audi A3 30 TFSI Sport 5dr Hatchback

£19,900

Good price

You save £1,600

Northampton NN5 5DH, UK

128 g CO2/km comb. - 109 HP (80 kW)

heycar

Audi A3 35 TFSI S Line 5dr

£18,880

Fair price

You save £220

Bedford MK42 9XE, UK

136 g CO2/km comb. - 148 HP (108 kW)

heycar

Audi A3 35 TFSI Sport 5dr S Tronic

£19,995

Good price

You save £1,505

166 Dunkeld Rd, Perth PH1, UK

129 g CO2/km comb. - 148 HP (108 kW) - 48.7 Mpg

heycar

Audi A3 35 TFSI Technik 5dr S Tronic

£19,400

Good price

You save £1,500

Bedford MK42 9XE, UK

148 HP (108 kW)

heycar

Audi A3 35 TFSI S line 5dr

£18,300

Fair price

Estimated price £17,642

Papyrus Rd, Peterborough PE4 5BH, UK

142 g CO2/km comb. - 148 HP (108 kW) - 45.6 Mpg

Price checked by AutoUncle

Super price

Good price

Fair price

A bit pricey

Expensive

Sort

Dealer

Used (2022) Audi A3 S-Line 150 HP | Good price

1.5 TFSI 35 S line Saloon 4dr

Towcester NN12 8QE, UK

Good price

You save £1,329

Towcester NN12 8QE, UK

Visit Motors.co.uk

Dealer

New (2025) Audi A3 S-Line 148 HP | Super price

Saloon 35 TDI S Line 4dr S

Star Ln, Macclesfield SK11 7TX, UK

Super price

You save £5,910

Star Ln, Macclesfield SK11 7TX, UK

Visit Honestjohn

Dealer

Used (2022) Audi A3 S-Line | Good price

35 TFSI S Line 5dr S Tronic

Good price

Used (2017) Audi A3 S-Line | Good price

1.5 TFSI S Line 5dr

Good price

New (2025) Audi A3 S-Line 148 HP | Good price

Saloon 35 TFSI S Line 4dr S

Good price

New (2024) Audi A3 S-Line 147 HP | Super price

35 TFSI S Line 5dr S Tronic

Super price

You save £4,149

Delivered to you

Visit Buyacar

A trusted partner of AutoUncle with agreed terms and a signed contract, ensuring you're dealing with a legitimate business.

Used (2019) Audi A3 S-Line 116 HP | Fair price

30 TDI 116 S Line 4dr Diesel

Riverside Park, 2 Fortune Cl, Northampton NN3 9HZ, UK

Fair price

You save £557

Riverside Park, 2 Fortune Cl, Northampton NN3 9HZ, UK

Visit heycar

A trusted partner of AutoUncle with agreed terms and a signed contract, ensuring you're dealing with a legitimate business.

Used (2020) Audi A3 S-Line 148 HP | Fair price

35 TFSI S Line 5dr S Tronic

Fair price

Estimated price £21,128

Delivered to you

Visit heycar

A trusted partner of AutoUncle with agreed terms and a signed contract, ensuring you're dealing with a legitimate business.

Used (2021) Audi A3 S-Line 109 HP | Fair price

30 TFSI S Line 5dr

Fair price

Estimated price £17,158

Delivered to you

Visit heycar

A trusted partner of AutoUncle with agreed terms and a signed contract, ensuring you're dealing with a legitimate business.

Used (2018) Audi A3 S-Line 148 HP | Fair price

1.5 TFSI S Line 5dr

Fair price

You save £500

Delivered to you

Visit heycar

Featured deals

heycar

Audi A3 35 TFSI S Line 5dr S Tronic

£26,400

Fair price

Estimated price £25,565

Babraham Rd, Cambridge CB22 3AY, UK

148 HP (108 kW)

heycar

Audi A3 Saloon 35 TFSI S Line 4dr S Tronic

£24,995

Fair price

You save £5

166 Dunkeld Rd, Perth PH1, UK

148 HP (108 kW)

heycar

Audi A3 35 TFSI S Line 5dr S Tronic

£24,300

Fair price

Estimated price £23,307

Northampton NN5 5DH, UK

148 HP (108 kW)

heycar

Audi A3 35 TFSI S Line 5dr Hatchback

£21,500

Fair price

Estimated price £21,009

Northampton NN5 5DH, UK

137 g CO2/km comb. - 148 HP (108 kW)

heycar

Audi A3 35 TFSI S Line 5dr S Tronic

£21,900

Fair price

Estimated price £21,128

Washingley Rd, Huntingdon PE29 6WP, UK

148 HP (108 kW)

heycar

Audi A3 35 TFSI S Line 5dr S Tronic

£24,900

Fair price

Estimated price £24,288

Babraham Rd, Cambridge CB22 3AY, UK

148 HP (108 kW)

heycar

Audi A3 Saloon 35 TFSI Sport 4dr

£19,386

Super price

You save £3,514

Bedford MK42 9XE, UK

128 g CO2/km comb. - 148 HP (108 kW)

heycar

Audi A3 Saloon 35 TFSI Sport 4dr S Tronic

£19,400

Good price

You save £1,400

Washingley Rd, Huntingdon PE29 6WP, UK

148 HP (108 kW)

heycar

Audi A3 35 TFSI S line 5dr S Tronic

£19,300

Fair price

You save £200

Papyrus Rd, Peterborough PE4 5BH, UK

148 HP (108 kW)

heycar

Audi A3 30 TFSI S Line 5dr

£17,900

Fair price

Estimated price £17,158

Washingley Rd, Huntingdon PE29 6WP, UK

132 g CO2/km comb. - 109 HP (80 kW)

heycar

Audi A3 35 TFSI Technik 5dr Hatchback

£17,900

Good price

You save £1,500

Bedford MK42 9XE, UK

132 g CO2/km comb. - 148 HP (108 kW)

heycar

Audi A3 30 TFSI Sport 5dr Hatchback

£19,900

Good price

You save £1,600

Northampton NN5 5DH, UK

128 g CO2/km comb. - 109 HP (80 kW)

heycar

Audi A3 35 TFSI S Line 5dr

£18,880

Fair price

You save £220

Bedford MK42 9XE, UK

136 g CO2/km comb. - 148 HP (108 kW)

heycar

Audi A3 35 TFSI Sport 5dr S Tronic

£19,995

Good price

You save £1,505

166 Dunkeld Rd, Perth PH1, UK

129 g CO2/km comb. - 148 HP (108 kW) - 48.7 Mpg

heycar

Audi A3 35 TFSI Technik 5dr S Tronic

£19,400

Good price

You save £1,500

Bedford MK42 9XE, UK

148 HP (108 kW)

heycar

Audi A3 35 TFSI S line 5dr

£18,300

Fair price

Estimated price £17,642

Papyrus Rd, Peterborough PE4 5BH, UK

142 g CO2/km comb. - 148 HP (108 kW) - 45.6 Mpg

heycar

Audi A3 35 TFSI S Line 5dr S Tronic

£23,900

Fair price

You save £300

Northampton NN5 5DH, UK

148 HP (108 kW)

heycar

Audi A3 35 TFSI S Line 4dr

£24,200

Fair price

You save £100

Papyrus Rd, Peterborough PE4 5BH, UK

133 g CO2/km comb. - 148 HP (108 kW) - 47.9 Mpg

heycar

Audi A3 Saloon 35 TFSI S line 4dr S Tronic

£20,900

Fair price

Estimated price £20,500

Washingley Rd, Huntingdon PE29 6WP, UK

148 HP (108 kW)

heycar

Audi A3 35 TFSI S Line 5dr S Tronic

£24,700

Fair price

Estimated price £23,970

Babraham Rd, Cambridge CB22 3AY, UK

148 HP (108 kW)

A trusted partner of AutoUncle with agreed terms and a signed contract, ensuring you're dealing with a legitimate business.

Used (2020) Audi A3 S-Line 148 HP | Fair price

35 TFSI S line 5dr

Fair price

Estimated price £17,642

Delivered to you

Visit heycar

A trusted partner of AutoUncle with agreed terms and a signed contract, ensuring you're dealing with a legitimate business.

Used (2018) Audi A3 S-Line 188 HP | Fair price

2.0 TFSI S Line 5dr Hatchback

Fair price

You save £1,000

Delivered to you

Visit heycar

A trusted partner of AutoUncle with agreed terms and a signed contract, ensuring you're dealing with a legitimate business.

Used (2023) Audi A3 S-Line 148 HP | Fair price

35 TFSI S Line 5dr S Tronic

Fair price

Estimated price £24,288

Delivered to you

Visit heycar

A trusted partner of AutoUncle with agreed terms and a signed contract, ensuring you're dealing with a legitimate business.

Used (2024) Audi A3 S-Line 148 HP | Fair price

35 TFSI S Line 5dr S Tronic

Fair price

Estimated price £25,565

Delivered to you

Visit heycar

A trusted partner of AutoUncle with agreed terms and a signed contract, ensuring you're dealing with a legitimate business.

Used (2021) Audi A3 S-Line 148 HP | Fair price

35 TFSI S Line 5dr

Fair price

You save £220

Delivered to you

Visit heycar

A trusted partner of AutoUncle with agreed terms and a signed contract, ensuring you're dealing with a legitimate business.

Used (2022) Audi A3 S-Line 148 HP | Fair price

35 TFSI S Line 5dr Hatchback

Fair price

Estimated price £21,009

Delivered to you

Visit heycar

A trusted partner of AutoUncle with agreed terms and a signed contract, ensuring you're dealing with a legitimate business.

Used (2020) Audi A3 S-Line 148 HP | Fair price

35 TFSI S Line 5dr S Tronic

Fair price

Estimated price £20,726

Delivered to you

Visit heycar

A trusted partner of AutoUncle with agreed terms and a signed contract, ensuring you're dealing with a legitimate business.

Used (2020) Audi A3 S-Line 148 HP | Fair price

Saloon 35 TFSI S line 4dr S

Fair price

Estimated price £20,500

Delivered to you

Visit heycar

A trusted partner of AutoUncle with agreed terms and a signed contract, ensuring you're dealing with a legitimate business.

Used (2022) Audi A3 S-Line 148 HP | Fair price

35 TFSI S Line 5dr S Tronic

Fair price

Estimated price £23,970

Delivered to you

Visit heycar

A trusted partner of AutoUncle with agreed terms and a signed contract, ensuring you're dealing with a legitimate business.

Used (2023) Audi A3 S-Line 148 HP | Fair price

35 TFSI S Line 5dr S Tronic

Fair price

You save £300

Delivered to you

Visit heycar

Featured deals

heycar

Audi A3 35 TFSI S Line 5dr S Tronic

£21,900

Fair price

Estimated price £21,128

Washingley Rd, Huntingdon PE29 6WP, UK

148 HP (108 kW)

heycar

Audi A3 35 TFSI S Line 5dr S Tronic

£24,900

Fair price

Estimated price £24,288

Babraham Rd, Cambridge CB22 3AY, UK

148 HP (108 kW)

heycar

Audi A3 Saloon 35 TFSI Sport 4dr

£19,386

Super price

You save £3,514

Bedford MK42 9XE, UK

128 g CO2/km comb. - 148 HP (108 kW)

heycar

Audi A3 Saloon 35 TFSI Sport 4dr S Tronic

£19,400

Good price

You save £1,400

Washingley Rd, Huntingdon PE29 6WP, UK

148 HP (108 kW)

heycar

Audi A3 35 TFSI S line 5dr S Tronic

£19,300

Fair price

You save £200

Papyrus Rd, Peterborough PE4 5BH, UK

148 HP (108 kW)

heycar

Audi A3 30 TFSI S Line 5dr

£17,900

Fair price

Estimated price £17,158

Washingley Rd, Huntingdon PE29 6WP, UK

132 g CO2/km comb. - 109 HP (80 kW)

heycar

Audi A3 35 TFSI Technik 5dr Hatchback

£17,900

Good price

You save £1,500

Bedford MK42 9XE, UK

132 g CO2/km comb. - 148 HP (108 kW)

heycar

Audi A3 30 TFSI Sport 5dr Hatchback

£19,900

Good price

You save £1,600

Northampton NN5 5DH, UK

128 g CO2/km comb. - 109 HP (80 kW)

heycar

Audi A3 35 TFSI S Line 5dr

£18,880

Fair price

You save £220

Bedford MK42 9XE, UK

136 g CO2/km comb. - 148 HP (108 kW)

heycar

Audi A3 35 TFSI Sport 5dr S Tronic

£19,995

Good price

You save £1,505

166 Dunkeld Rd, Perth PH1, UK

129 g CO2/km comb. - 148 HP (108 kW) - 48.7 Mpg

heycar

Audi A3 35 TFSI Technik 5dr S Tronic

£19,400

Good price

You save £1,500

Bedford MK42 9XE, UK

148 HP (108 kW)

heycar

Audi A3 35 TFSI S line 5dr

£18,300

Fair price

Estimated price £17,642

Papyrus Rd, Peterborough PE4 5BH, UK

142 g CO2/km comb. - 148 HP (108 kW) - 45.6 Mpg

heycar

Audi A3 35 TFSI S Line 5dr S Tronic

£23,900

Fair price

You save £300

Northampton NN5 5DH, UK

148 HP (108 kW)

heycar

Audi A3 35 TFSI S Line 4dr

£24,200

Fair price

You save £100

Papyrus Rd, Peterborough PE4 5BH, UK

133 g CO2/km comb. - 148 HP (108 kW) - 47.9 Mpg

heycar

Audi A3 Saloon 35 TFSI S line 4dr S Tronic

£20,900

Fair price

Estimated price £20,500

Washingley Rd, Huntingdon PE29 6WP, UK

148 HP (108 kW)

heycar

Audi A3 35 TFSI S Line 5dr S Tronic

£24,700

Fair price

Estimated price £23,970

Babraham Rd, Cambridge CB22 3AY, UK

148 HP (108 kW)

heycar

Audi A3 35 TFSI S Line 5dr S Tronic

£26,400

Fair price

Estimated price £25,565

Babraham Rd, Cambridge CB22 3AY, UK

148 HP (108 kW)

heycar

Audi A3 Saloon 35 TFSI S Line 4dr S Tronic

£24,995

Fair price

You save £5

166 Dunkeld Rd, Perth PH1, UK

148 HP (108 kW)

heycar

Audi A3 35 TFSI S Line 5dr S Tronic

£24,300

Fair price

Estimated price £23,307

Northampton NN5 5DH, UK

148 HP (108 kW)

heycar

Audi A3 35 TFSI S Line 5dr Hatchback

£21,500

Fair price

Estimated price £21,009

Northampton NN5 5DH, UK

137 g CO2/km comb. - 148 HP (108 kW)

A trusted partner of AutoUncle with agreed terms and a signed contract, ensuring you're dealing with a legitimate business.

Used (2023) Audi A3 S-Line 148 HP | Fair price

35 TFSI S Line 4dr

Fair price

You save £100

Delivered to you

Visit heycar

A trusted partner of AutoUncle with agreed terms and a signed contract, ensuring you're dealing with a legitimate business.

Used (2021) Audi A3 S-Line 148 HP | Fair price

35 TFSI S line 5dr S Tronic

Fair price

You save £200

Delivered to you

Visit heycar

A trusted partner of AutoUncle with agreed terms and a signed contract, ensuring you're dealing with a legitimate business.

Used (2022) Audi A3 S-Line 148 HP | Fair price

35 TFSI S Line 5dr S Tronic

Fair price

Estimated price £23,307

Delivered to you

Visit heycar

A trusted partner of AutoUncle with agreed terms and a signed contract, ensuring you're dealing with a legitimate business.

Used (2023) Audi A3 S-Line 148 HP | Fair price

Saloon 35 TFSI S Line 4dr S

Fair price

New (2025) Audi A3 S-Line 150 HP | Fair price

Saloon 35 TFSI S Line 4dr

Fair price

You save £205

Delivered to you

Visit Buyacar

Featured deals

heycar

Audi A3 35 TFSI S line 5dr S Tronic

£19,300

Fair price

You save £200

Papyrus Rd, Peterborough PE4 5BH, UK

148 HP (108 kW)

heycar

Audi A3 30 TFSI S Line 5dr

£17,900

Fair price

Estimated price £17,158

Washingley Rd, Huntingdon PE29 6WP, UK

132 g CO2/km comb. - 109 HP (80 kW)

heycar

Audi A3 35 TFSI Technik 5dr Hatchback

£17,900

Good price

You save £1,500

Bedford MK42 9XE, UK

132 g CO2/km comb. - 148 HP (108 kW)

heycar

Audi A3 30 TFSI Sport 5dr Hatchback

£19,900

Good price

You save £1,600

Northampton NN5 5DH, UK

128 g CO2/km comb. - 109 HP (80 kW)

heycar

Audi A3 35 TFSI S Line 5dr

£18,880

Fair price

You save £220

Bedford MK42 9XE, UK

136 g CO2/km comb. - 148 HP (108 kW)

heycar

Audi A3 35 TFSI Sport 5dr S Tronic

£19,995

Good price

You save £1,505

166 Dunkeld Rd, Perth PH1, UK

129 g CO2/km comb. - 148 HP (108 kW) - 48.7 Mpg

heycar

Audi A3 35 TFSI Technik 5dr S Tronic

£19,400

Good price

You save £1,500

Bedford MK42 9XE, UK

148 HP (108 kW)

heycar

Audi A3 35 TFSI S line 5dr

£18,300

Fair price

Estimated price £17,642

Papyrus Rd, Peterborough PE4 5BH, UK

142 g CO2/km comb. - 148 HP (108 kW) - 45.6 Mpg

heycar

Audi A3 35 TFSI S Line 5dr S Tronic

£23,900

Fair price

You save £300

Northampton NN5 5DH, UK

148 HP (108 kW)

heycar

Audi A3 35 TFSI S Line 4dr

£24,200

Fair price

You save £100

Papyrus Rd, Peterborough PE4 5BH, UK

133 g CO2/km comb. - 148 HP (108 kW) - 47.9 Mpg

heycar

Audi A3 Saloon 35 TFSI S line 4dr S Tronic

£20,900

Fair price

Estimated price £20,500

Washingley Rd, Huntingdon PE29 6WP, UK

148 HP (108 kW)

heycar

Audi A3 35 TFSI S Line 5dr S Tronic

£24,700

Fair price

Estimated price £23,970

Babraham Rd, Cambridge CB22 3AY, UK

148 HP (108 kW)

heycar

Audi A3 35 TFSI S Line 5dr S Tronic

£26,400

Fair price

Estimated price £25,565

Babraham Rd, Cambridge CB22 3AY, UK

148 HP (108 kW)

heycar

Audi A3 Saloon 35 TFSI S Line 4dr S Tronic

£24,995

Fair price

You save £5

166 Dunkeld Rd, Perth PH1, UK

148 HP (108 kW)

heycar

Audi A3 35 TFSI S Line 5dr S Tronic

£24,300

Fair price

Estimated price £23,307

Northampton NN5 5DH, UK

148 HP (108 kW)

heycar

Audi A3 35 TFSI S Line 5dr Hatchback

£21,500

Fair price

Estimated price £21,009

Northampton NN5 5DH, UK

137 g CO2/km comb. - 148 HP (108 kW)

heycar

Audi A3 35 TFSI S Line 5dr S Tronic

£21,900

Fair price

Estimated price £21,128

Washingley Rd, Huntingdon PE29 6WP, UK

148 HP (108 kW)

heycar

Audi A3 35 TFSI S Line 5dr S Tronic

£24,900

Fair price

Estimated price £24,288

Babraham Rd, Cambridge CB22 3AY, UK

148 HP (108 kW)

heycar

Audi A3 Saloon 35 TFSI Sport 4dr

£19,386

Super price

You save £3,514

Bedford MK42 9XE, UK

128 g CO2/km comb. - 148 HP (108 kW)

heycar

Audi A3 Saloon 35 TFSI Sport 4dr S Tronic

£19,400

Good price

You save £1,400

Washingley Rd, Huntingdon PE29 6WP, UK

148 HP (108 kW)

Price checked by AutoUncle

Super price

Good price

Fair price

A bit pricey

Expensive