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(S-Line) Audi A3 used • 311 cars for sale – Compares prices!

Featured deals

heycar

Audi A3 35 TFSI Sport 5dr S Tronic

£19,995

Good price

You save £1,505

PH15AS Perth

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

heycar

Audi A3 Saloon 30 TFSI Sport 4dr

£23,428

Good price

You save £2,372

OX42HW Oxford, Oxfordshire

124 g CO2/km comb. - 150 HP (110 kW) - 48.7 Mpg

heycar

Audi A3 35 TFSI S Line 5dr S Tronic

£22,200

Fair price

Estimated price £21,128

PE296WP Huntingdon, Cambridgeshire

148 HP (108 kW)

heycar

Audi A3 Saloon 35 TFSI Sport 4dr S Tronic

£19,400

Good price

You save £1,400

PE296WP Huntingdon, Cambridgeshire

148 HP (108 kW)

heycar

Audi A3 35 TFSI S Line 5dr S Tronic

£23,900

Fair price

You save £300

NN55DH Northampton, Northamptonshire

148 HP (108 kW)

heycar

Audi A3 35 TFSI S Line 5dr

£21,900

Fair price

You save £400

CB223AY Cambridge, Cambridgeshire

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

heycar

Audi A3 5DR 35 TFSI Sport 5dr S Tronic

£23,887

Good price

You save £1,713

OX42HW Oxford, Oxfordshire

150 HP (110 kW) - 49.6 Mpg

heycar

Audi A3 35 TFSI S line 5dr S Tronic

£19,300

Fair price

You save £200

PE45BH Peterborough, Cambridgeshire

148 HP (108 kW)

heycar

Audi A3 35 TFSI S Line 4dr

£24,200

Fair price

You save £100

PE45BH Peterborough, Cambridgeshire

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

heycar

Audi A3 35 TFSI S Line 5dr

£18,880

Fair price

You save £220

MK429XE Bedford, Bedfordshire

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

heycar

Audi A3 SALOON 35 TFSI S Line 4dr S Tronic

£23,543

Fair price

You save £557

OX42HW Oxford, Oxfordshire

150 HP (110 kW) - 47.9 Mpg

heycar

Audi A3 35 TFSI S Line 5dr S Tronic

£26,400

Fair price

Estimated price £25,565

CB223AY Cambridge, Cambridgeshire

148 HP (108 kW)

heycar

Audi A3 35 TFSI S line 5dr

£18,600

Fair price

Estimated price £17,642

PE45BH Peterborough, Cambridgeshire

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

heycar

Audi A3 35 TFSI S Line 5dr Hatchback

£21,500

Fair price

Estimated price £21,009

NN55DH Northampton, Northamptonshire

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

heycar

Audi A3 Saloon 35 TFSI S line 4dr S Tronic

£20,900

Fair price

Estimated price £20,500

PE296WP Huntingdon, Cambridgeshire

148 HP (108 kW)

heycar

Audi A3 Saloon 35 TFSI Sport 4dr

£19,386

Super price

You save £3,514

MK429XE Bedford, Bedfordshire

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

heycar

Audi A3 35 TFSI S Line 5dr S Tronic

£24,700

Fair price

Estimated price £23,970

CB223AY Cambridge, Cambridgeshire

148 HP (108 kW)

heycar

Audi A3 30 TFSI Sport 5dr Hatchback

£20,900

Fair price

You save £600

NN55DH Northampton, Northamptonshire

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

heycar

Audi A3 30 TFSI Sport 5dr Hatchback

£20,700

Fair price

You save £500

NN55DH Northampton, Northamptonshire

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

heycar

Audi A3 Saloon 35 TFSI S Line 4dr S Tronic

£24,995

Fair price

You save £5

PH15AS Perth

148 HP (108 kW)

Price checked by AutoUncle

Super price

Good price

Fair price

A bit pricey

Expensive

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Dealer

Used (2019) Audi A3 S-Line 150 HP | Super price

Saloon (2019/69)S Line 35 TFSI

OX25 2LU Bicester, Oxfordshire

Super price

You save £3,210

OX25 2LU Bicester, Oxfordshire

Visit Parkers.co.uk

Dealer

Used (2019) Audi A3 S-Line 150 HP | Good price

35 TFSI S Line 4dr S Tronic

OX25 2RH Ambrosden Oxon, Oxfordshire

Good price

You save £2,210

OX25 2RH Ambrosden Oxon, Oxfordshire

Visit Desperateseller.co.uk

Dealer

Used (2018) Audi A3 S-Line 150 HP | Good price

Saloon 1.5 TFSI S Line 4dr

Good price

Used (2018) Audi A3 S-Line 150 HP | Good price

5DR 1.5 TFSI S Line 5dr

DE24 8JG Derby, Derbyshire

Good price

You save £1,029

DE24 8JG Derby, Derbyshire

Visit Exchange and Mart

Dealer

Used (2019) Audi A3 S-Line 147 HP | Good price

35 TFSI S Line 5dr S Tronic

LS197BZ Rawdon, West Yorkshire

Good price

You save £1,950

LS197BZ Rawdon, West Yorkshire

Visit Carsite.co.uk

Dealer

Used (2018) Audi A3 S-Line 150 HP | Good price

1.5 TFSI S Line 5dr S Tronic

WS13 7SA Lichfield, Staffordshire

Good price

You save £1,369

WS13 7SA Lichfield, Staffordshire

Visit Carsite.co.uk

Dealer

Used (2019) Audi A3 S-Line 148 HP | Good price

35 TFSI S Line 5dr S Tronic

Good price

Used (2019) Audi A3 S-Line 148 HP | Good price

Saloon 35 TFSI S Line 4dr

Good price

Used (2018) Audi A3 S-Line 150 HP | Good price

35 TFSI S Line 5dr S Tronic Petrol

WC1E 7DP London, London

Good price

You save £1,211

WC1E 7DP London, London

Visit Carsite.co.uk

Dealer

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

35 TFSI S Line 5dr S Tronic

Good price

You save £1,900

Delivered to you

Visit Buyacar

Featured deals

heycar

Audi A3 35 TFSI S Line 5dr S Tronic

£23,900

Fair price

You save £300

NN55DH Northampton, Northamptonshire

148 HP (108 kW)

heycar

Audi A3 35 TFSI S Line 5dr

£21,900

Fair price

You save £400

CB223AY Cambridge, Cambridgeshire

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

heycar

Audi A3 5DR 35 TFSI Sport 5dr S Tronic

£23,887

Good price

You save £1,713

OX42HW Oxford, Oxfordshire

150 HP (110 kW) - 49.6 Mpg

heycar

Audi A3 35 TFSI S line 5dr S Tronic

£19,300

Fair price

You save £200

PE45BH Peterborough, Cambridgeshire

148 HP (108 kW)

heycar

Audi A3 35 TFSI S Line 4dr

£24,200

Fair price

You save £100

PE45BH Peterborough, Cambridgeshire

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

heycar

Audi A3 35 TFSI S Line 5dr

£18,880

Fair price

You save £220

MK429XE Bedford, Bedfordshire

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

heycar

Audi A3 SALOON 35 TFSI S Line 4dr S Tronic

£23,543

Fair price

You save £557

OX42HW Oxford, Oxfordshire

150 HP (110 kW) - 47.9 Mpg

heycar

Audi A3 35 TFSI S Line 5dr S Tronic

£26,400

Fair price

Estimated price £25,565

CB223AY Cambridge, Cambridgeshire

148 HP (108 kW)

heycar

Audi A3 35 TFSI S line 5dr

£18,600

Fair price

Estimated price £17,642

PE45BH Peterborough, Cambridgeshire

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

heycar

Audi A3 35 TFSI S Line 5dr Hatchback

£21,500

Fair price

Estimated price £21,009

NN55DH Northampton, Northamptonshire

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

heycar

Audi A3 Saloon 35 TFSI S line 4dr S Tronic

£20,900

Fair price

Estimated price £20,500

PE296WP Huntingdon, Cambridgeshire

148 HP (108 kW)

heycar

Audi A3 Saloon 35 TFSI Sport 4dr

£19,386

Super price

You save £3,514

MK429XE Bedford, Bedfordshire

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

heycar

Audi A3 35 TFSI S Line 5dr S Tronic

£24,700

Fair price

Estimated price £23,970

CB223AY Cambridge, Cambridgeshire

148 HP (108 kW)

heycar

Audi A3 30 TFSI Sport 5dr Hatchback

£20,900

Fair price

You save £600

NN55DH Northampton, Northamptonshire

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

heycar

Audi A3 30 TFSI Sport 5dr Hatchback

£20,700

Fair price

You save £500

NN55DH Northampton, Northamptonshire

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

heycar

Audi A3 Saloon 35 TFSI S Line 4dr S Tronic

£24,995

Fair price

You save £5

PH15AS Perth

148 HP (108 kW)

heycar

Audi A3 35 TFSI Sport 5dr S Tronic

£19,995

Good price

You save £1,505

PH15AS Perth

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

heycar

Audi A3 Saloon 30 TFSI Sport 4dr

£23,428

Good price

You save £2,372

OX42HW Oxford, Oxfordshire

124 g CO2/km comb. - 150 HP (110 kW) - 48.7 Mpg

heycar

Audi A3 35 TFSI S Line 5dr S Tronic

£22,200

Fair price

Estimated price £21,128

PE296WP Huntingdon, Cambridgeshire

148 HP (108 kW)

heycar

Audi A3 Saloon 35 TFSI Sport 4dr S Tronic

£19,400

Good price

You save £1,400

PE296WP Huntingdon, Cambridgeshire

148 HP (108 kW)

Dealer

Used (2019) Audi A3 S-Line 150 HP | Super price

Saloon 35 TFSI S Line 4dr

PR2 2JZ Preston, Lancashire

Super price

You save £2,705

PR2 2JZ Preston, Lancashire

Visit Exchange and Mart

Dealer

Used (2019) Audi A3 S-Line 148 HP | Good price

35 TFSI S Line 5dr S Tronic

WC1E 7DP London, London

Good price

You save £2,010

WC1E 7DP London, London

Visit Carsite.co.uk

Dealer

Used (2019) Audi A3 S-Line 150 HP | Good price

Sportback (2019/69)S Line 35 TFSI

Good price

Used (2021) Audi A3 S-Line 150 HP | Good price

Saloon 35 TFSI S Line 4dr

Good price

New (2025) Audi A3 S-Line 147 HP | Good price

Saloon 35 TFSI S Line 4dr S

Good price

New (2024) Audi A3 S-Line 113 HP | Good price

30 TFSI S Line 5dr S Tronic

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

35 TFSI S Line 5dr

Fair price

You save £400

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

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 (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

Featured deals

heycar

Audi A3 35 TFSI S Line 4dr

£24,200

Fair price

You save £100

PE45BH Peterborough, Cambridgeshire

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

heycar

Audi A3 35 TFSI S Line 5dr

£18,880

Fair price

You save £220

MK429XE Bedford, Bedfordshire

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

heycar

Audi A3 SALOON 35 TFSI S Line 4dr S Tronic

£23,543

Fair price

You save £557

OX42HW Oxford, Oxfordshire

150 HP (110 kW) - 47.9 Mpg

heycar

Audi A3 35 TFSI S Line 5dr S Tronic

£26,400

Fair price

Estimated price £25,565

CB223AY Cambridge, Cambridgeshire

148 HP (108 kW)

heycar

Audi A3 35 TFSI S line 5dr

£18,600

Fair price

Estimated price £17,642

PE45BH Peterborough, Cambridgeshire

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

heycar

Audi A3 35 TFSI S Line 5dr Hatchback

£21,500

Fair price

Estimated price £21,009

NN55DH Northampton, Northamptonshire

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

heycar

Audi A3 Saloon 35 TFSI S line 4dr S Tronic

£20,900

Fair price

Estimated price £20,500

PE296WP Huntingdon, Cambridgeshire

148 HP (108 kW)

heycar

Audi A3 Saloon 35 TFSI Sport 4dr

£19,386

Super price

You save £3,514

MK429XE Bedford, Bedfordshire

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

heycar

Audi A3 35 TFSI S Line 5dr S Tronic

£24,700

Fair price

Estimated price £23,970

CB223AY Cambridge, Cambridgeshire

148 HP (108 kW)

heycar

Audi A3 30 TFSI Sport 5dr Hatchback

£20,900

Fair price

You save £600

NN55DH Northampton, Northamptonshire

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

heycar

Audi A3 30 TFSI Sport 5dr Hatchback

£20,700

Fair price

You save £500

NN55DH Northampton, Northamptonshire

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

heycar

Audi A3 Saloon 35 TFSI S Line 4dr S Tronic

£24,995

Fair price

You save £5

PH15AS Perth

148 HP (108 kW)

heycar

Audi A3 35 TFSI Sport 5dr S Tronic

£19,995

Good price

You save £1,505

PH15AS Perth

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

heycar

Audi A3 Saloon 30 TFSI Sport 4dr

£23,428

Good price

You save £2,372

OX42HW Oxford, Oxfordshire

124 g CO2/km comb. - 150 HP (110 kW) - 48.7 Mpg

heycar

Audi A3 35 TFSI S Line 5dr S Tronic

£22,200

Fair price

Estimated price £21,128

PE296WP Huntingdon, Cambridgeshire

148 HP (108 kW)

heycar

Audi A3 Saloon 35 TFSI Sport 4dr S Tronic

£19,400

Good price

You save £1,400

PE296WP Huntingdon, Cambridgeshire

148 HP (108 kW)

heycar

Audi A3 35 TFSI S Line 5dr S Tronic

£23,900

Fair price

You save £300

NN55DH Northampton, Northamptonshire

148 HP (108 kW)

heycar

Audi A3 35 TFSI S Line 5dr

£21,900

Fair price

You save £400

CB223AY Cambridge, Cambridgeshire

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

heycar

Audi A3 5DR 35 TFSI Sport 5dr S Tronic

£23,887

Good price

You save £1,713

OX42HW Oxford, Oxfordshire

150 HP (110 kW) - 49.6 Mpg

heycar

Audi A3 35 TFSI S line 5dr S Tronic

£19,300

Fair price

You save £200

PE45BH Peterborough, Cambridgeshire

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 (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 £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 (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

Featured deals

heycar

Audi A3 35 TFSI S line 5dr

£18,600

Fair price

Estimated price £17,642

PE45BH Peterborough, Cambridgeshire

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

heycar

Audi A3 35 TFSI S Line 5dr Hatchback

£21,500

Fair price

Estimated price £21,009

NN55DH Northampton, Northamptonshire

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

heycar

Audi A3 Saloon 35 TFSI S line 4dr S Tronic

£20,900

Fair price

Estimated price £20,500

PE296WP Huntingdon, Cambridgeshire

148 HP (108 kW)

heycar

Audi A3 Saloon 35 TFSI Sport 4dr

£19,386

Super price

You save £3,514

MK429XE Bedford, Bedfordshire

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

heycar

Audi A3 35 TFSI S Line 5dr S Tronic

£24,700

Fair price

Estimated price £23,970

CB223AY Cambridge, Cambridgeshire

148 HP (108 kW)

heycar

Audi A3 30 TFSI Sport 5dr Hatchback

£20,900

Fair price

You save £600

NN55DH Northampton, Northamptonshire

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

heycar

Audi A3 30 TFSI Sport 5dr Hatchback

£20,700

Fair price

You save £500

NN55DH Northampton, Northamptonshire

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

heycar

Audi A3 Saloon 35 TFSI S Line 4dr S Tronic

£24,995

Fair price

You save £5

PH15AS Perth

148 HP (108 kW)

heycar

Audi A3 35 TFSI Sport 5dr S Tronic

£19,995

Good price

You save £1,505

PH15AS Perth

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

heycar

Audi A3 Saloon 30 TFSI Sport 4dr

£23,428

Good price

You save £2,372

OX42HW Oxford, Oxfordshire

124 g CO2/km comb. - 150 HP (110 kW) - 48.7 Mpg

heycar

Audi A3 35 TFSI S Line 5dr S Tronic

£22,200

Fair price

Estimated price £21,128

PE296WP Huntingdon, Cambridgeshire

148 HP (108 kW)

heycar

Audi A3 Saloon 35 TFSI Sport 4dr S Tronic

£19,400

Good price

You save £1,400

PE296WP Huntingdon, Cambridgeshire

148 HP (108 kW)

heycar

Audi A3 35 TFSI S Line 5dr S Tronic

£23,900

Fair price

You save £300

NN55DH Northampton, Northamptonshire

148 HP (108 kW)

heycar

Audi A3 35 TFSI S Line 5dr

£21,900

Fair price

You save £400

CB223AY Cambridge, Cambridgeshire

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

heycar

Audi A3 5DR 35 TFSI Sport 5dr S Tronic

£23,887

Good price

You save £1,713

OX42HW Oxford, Oxfordshire

150 HP (110 kW) - 49.6 Mpg

heycar

Audi A3 35 TFSI S line 5dr S Tronic

£19,300

Fair price

You save £200

PE45BH Peterborough, Cambridgeshire

148 HP (108 kW)

heycar

Audi A3 35 TFSI S Line 4dr

£24,200

Fair price

You save £100

PE45BH Peterborough, Cambridgeshire

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

heycar

Audi A3 35 TFSI S Line 5dr

£18,880

Fair price

You save £220

MK429XE Bedford, Bedfordshire

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

heycar

Audi A3 SALOON 35 TFSI S Line 4dr S Tronic

£23,543

Fair price

You save £557

OX42HW Oxford, Oxfordshire

150 HP (110 kW) - 47.9 Mpg

heycar

Audi A3 35 TFSI S Line 5dr S Tronic

£26,400

Fair price

Estimated price £25,565

CB223AY Cambridge, Cambridgeshire

148 HP (108 kW)

Price checked by AutoUncle

Super price

Good price

Fair price

A bit pricey

Expensive