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(S-Line) Audi A6 used • 79 cars for sale – Compares prices!

Featured deals

heycar

Audi A6 Avant 40 TFSI Sport 5dr S Tronic

£26,995

Good price

You save £2,105

PH15AS Perth

201 HP (147 kW)

heycar

Audi A6 Avant 40 TFSI S Line 5dr S Tronic

£28,900

Fair price

You save £700

NN55DH Northampton, Northamptonshire

201 HP (147 kW)

heycar

Audi A6 Avant 40 TDI Quattro S Line 5dr S Tronic

£29,400

Good price

You save £2,500

PE296WP Huntingdon, Cambridgeshire

201 HP (147 kW)

heycar

Audi A6 40 TDI Quattro Black Edition 4dr S Tronic

£30,400

Fair price

Estimated price £29,293

PE45BH Peterborough, Cambridgeshire

204 HP (150 kW) - 47.9 Mpg

heycar

Audi A6 45 TFSI 265 Quattro Sport 4dr S Tronic

£20,700

Good price

You save £1,900

PE296WP Huntingdon, Cambridgeshire

261 HP (191 kW) - 34.0 Mpg

Carwow

Audi A6 -2.0 TDI Quattro S Line 4dr Tronic

£13,000

Fair price

You save £1,000

NE51NB, Tyne and Wear

131 g CO2/km comb. - 190 HP (139 kW) - 5.0 Mpg

Carwow

Audi A6 -Avant 2.0 TDI Ultra S Line 5dr Tronic

£11,350

Super price

You save £2,550

NE51NB, Tyne and Wear

118 g CO2/km comb. - 190 HP (139 kW) - 4.5 Mpg

Carwow

Audi A6 -2.0 TDI Ultra Black Edition 4dr

£11,900

Fair price

Estimated price £11,720

NE51NB, Tyne and Wear

119 g CO2/km comb. - 190 HP (139 kW) - 4.5 Mpg

heycar

BMW 218 2 Series Gran Coupe i [136] M Sport 4dr DCT

£25,920

Fair price

Estimated price £25,730

NE360BQ West Boldon, Tyne and Wear

133 g CO2/km comb. - 136 HP (100 kW) - 5.8 Mpg

heycar

Mercedes CLA220 CLAAMG Line Executive 4dr Tip Auto

£30,298

Fair price

You save £302

EH153HR Fort Kinnaird

188 HP (138 kW)

heycar

BMW 320 3 Series i M Sport 5dr Step Auto Petrol Estate

£33,011

Fair price

Estimated price £31,630

NE360BQ West Boldon, Tyne and Wear

153 g CO2/km comb. - 184 HP (135 kW) - 42.0 Mpg

heycar

Mercedes CLA180 CLA Shooting BrakeAMG Line Premium Plus 5dr Tip Auto

£25,999

Good price

You save £1,401

EH288QW Newbridge

134 HP (98 kW)

heycar

BMW 218 2 Series i M Sport Gran Coupe 1.5 4dr

£26,964

Fair price

Estimated price £25,951

NE360BQ West Boldon, Tyne and Wear

133 g CO2/km comb. - 136 HP (100 kW) - 48.7 Mpg

heycar

Audi A4 Avant S line 35 TDI 163 PS S tronic 2.0 5dr

£24,995

Fair price

Estimated price £24,397

PH15AS Perth

142 g CO2/km comb. - 161 HP (118 kW) - 52.3 Mpg

heycar

Audi A4 35 TDI Black Edition 4dr S Tronic

£29,630

Fair price

Estimated price £28,766

NE47LA Newcastle, Tyne and Wear

161 HP (118 kW)

Carwow

Mercedes C200 - C-Class EstateAMG Line Premium 5dr 9G-Tronic

£24,468

Super price

You save £5,432

SR53NX, Tyne and Wear

155 g CO2/km comb. - 204 HP (150 kW) - 6.9 Mpg

Carwow

BMW 320 3 Series i M Sport Saloon 2.0 4dr

£24,891

Fair price

Estimated price £24,194

NE360BQ, Tyne and Wear

146 g CO2/km comb. - 184 HP (135 kW) - 44.1 Mpg

Carwow

BMW 320 3 Series d M Sport Saloon 2.0 4dr

£28,186

Fair price

Estimated price £27,254

NE360BQ, Tyne and Wear

122 g CO2/km comb. - 190 HP (139 kW) - 57.6 Mpg

heycar

Audi A4 Avant S line 40 TFSI 190 PS S tronic

£20,900

Fair price

Estimated price £20,147

NN55DH Northampton, Northamptonshire

137 g CO2/km comb. - 190 HP (139 kW) - 47.1 Mpg

Carwow

Audi A4 -40 TFSI 204 Black Edition 4dr S Tronic

£21,897

Fair price

You save £1,003

NE297TE Newcastle, Tyne and Wear

156 g CO2/km comb. - 204 HP (150 kW) - 6.9 Mpg

Price checked by AutoUncle

Super price

Good price

Fair price

A bit pricey

Expensive

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

Used (2023) Audi A6 S-Line 201 HP | Good price

Avant 40 TDI Quattro S Line 5dr S

Good price

You save £2,500

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 (2018) Audi A6 S-Line 190 HP | Super price

-Avant 2.0 TDI Ultra S Line 5dr

NE51NB, Tyne and Wear

Super price

You save £2,550

NE51NB, Tyne and Wear

Visit Carwow

Dealer

Used (2022) Audi A6 S-Line 204 HP | Super price

40 TDI S Line 4dr S Tronic

WC1E 7DP London, London

Super price

You save £3,158

WC1E 7DP London, London

Visit Honestjohn

Dealer

New (2025) Audi A6 S-Line 299 HP | Super price

SALOON 50 TFSI e Quattro S Line

WC1E 7DP London, London

Super price

You save £6,914

WC1E 7DP London, London

Visit Motors.co.uk

Dealer

Used (2018) Audi A6 S-Line | Super price

Saloon 2.0 TDI Ultra S Line

NE10 0AZ Gateshead, Tyne and Wear

Super price

You save £3,000

NE10 0AZ Gateshead, Tyne and Wear

Visit Parkers.co.uk

Dealer

Used (2015) Audi A6 S-Line | Good price

Saloon 2.0 TDI Ultra S Line 5dr S

NE5 1NB Newcastle Upon Tyne, Tyne and Wear

Good price

You save £1,750

NE5 1NB Newcastle Upon Tyne, Tyne and Wear

Visit Parkers.co.uk

Dealer

Used (2022) Audi A6 S-Line 204 HP | Good price

Avant 40 TFSI S Line 5dr S Tronic

Good price

Used (2022) Audi A6 S-Line 204 HP | Super price

40 TDI S Line 4dr S Tronic

Super price

Used (2022) Audi A6 S-Line 204 HP | Good price

Avant 40 TDI S Line 5dr S

Good price

Used (2019) Audi A6 S-Line 204 HP | Good price

Avant 40 TDI S Line 5dr S

WC1E 7DP London, London

Good price

You save £1,705

WC1E 7DP London, London

Visit Group1auto.co.uk

Featured deals

heycar

Audi A6 45 TFSI 265 Quattro Sport 4dr S Tronic

£20,700

Good price

You save £1,900

PE296WP Huntingdon, Cambridgeshire

261 HP (191 kW) - 34.0 Mpg

Carwow

Audi A6 -2.0 TDI Quattro S Line 4dr Tronic

£13,000

Fair price

You save £1,000

NE51NB, Tyne and Wear

131 g CO2/km comb. - 190 HP (139 kW) - 5.0 Mpg

Carwow

Audi A6 -Avant 2.0 TDI Ultra S Line 5dr Tronic

£11,350

Super price

You save £2,550

NE51NB, Tyne and Wear

118 g CO2/km comb. - 190 HP (139 kW) - 4.5 Mpg

Carwow

Audi A6 -2.0 TDI Ultra Black Edition 4dr

£11,900

Fair price

Estimated price £11,720

NE51NB, Tyne and Wear

119 g CO2/km comb. - 190 HP (139 kW) - 4.5 Mpg

heycar

BMW 218 2 Series Gran Coupe i [136] M Sport 4dr DCT

£25,920

Fair price

Estimated price £25,730

NE360BQ West Boldon, Tyne and Wear

133 g CO2/km comb. - 136 HP (100 kW) - 5.8 Mpg

heycar

Mercedes CLA220 CLAAMG Line Executive 4dr Tip Auto

£30,298

Fair price

You save £302

EH153HR Fort Kinnaird

188 HP (138 kW)

heycar

BMW 320 3 Series i M Sport 5dr Step Auto Petrol Estate

£33,011

Fair price

Estimated price £31,630

NE360BQ West Boldon, Tyne and Wear

153 g CO2/km comb. - 184 HP (135 kW) - 42.0 Mpg

heycar

Mercedes CLA180 CLA Shooting BrakeAMG Line Premium Plus 5dr Tip Auto

£25,999

Good price

You save £1,401

EH288QW Newbridge

134 HP (98 kW)

heycar

BMW 218 2 Series i M Sport Gran Coupe 1.5 4dr

£26,964

Fair price

Estimated price £25,951

NE360BQ West Boldon, Tyne and Wear

133 g CO2/km comb. - 136 HP (100 kW) - 48.7 Mpg

heycar

Audi A4 Avant S line 35 TDI 163 PS S tronic 2.0 5dr

£24,995

Fair price

Estimated price £24,397

PH15AS Perth

142 g CO2/km comb. - 161 HP (118 kW) - 52.3 Mpg

heycar

Audi A4 35 TDI Black Edition 4dr S Tronic

£29,630

Fair price

Estimated price £28,766

NE47LA Newcastle, Tyne and Wear

161 HP (118 kW)

Carwow

Mercedes C200 - C-Class EstateAMG Line Premium 5dr 9G-Tronic

£24,468

Super price

You save £5,432

SR53NX, Tyne and Wear

155 g CO2/km comb. - 204 HP (150 kW) - 6.9 Mpg

Carwow

BMW 320 3 Series i M Sport Saloon 2.0 4dr

£24,891

Fair price

Estimated price £24,194

NE360BQ, Tyne and Wear

146 g CO2/km comb. - 184 HP (135 kW) - 44.1 Mpg

Carwow

BMW 320 3 Series d M Sport Saloon 2.0 4dr

£28,186

Fair price

Estimated price £27,254

NE360BQ, Tyne and Wear

122 g CO2/km comb. - 190 HP (139 kW) - 57.6 Mpg

heycar

Audi A4 Avant S line 40 TFSI 190 PS S tronic

£20,900

Fair price

Estimated price £20,147

NN55DH Northampton, Northamptonshire

137 g CO2/km comb. - 190 HP (139 kW) - 47.1 Mpg

Carwow

Audi A4 -40 TFSI 204 Black Edition 4dr S Tronic

£21,897

Fair price

You save £1,003

NE297TE Newcastle, Tyne and Wear

156 g CO2/km comb. - 204 HP (150 kW) - 6.9 Mpg

heycar

Audi A6 Avant 40 TFSI Sport 5dr S Tronic

£26,995

Good price

You save £2,105

PH15AS Perth

201 HP (147 kW)

heycar

Audi A6 Avant 40 TFSI S Line 5dr S Tronic

£28,900

Fair price

You save £700

NN55DH Northampton, Northamptonshire

201 HP (147 kW)

heycar

Audi A6 Avant 40 TDI Quattro S Line 5dr S Tronic

£29,400

Good price

You save £2,500

PE296WP Huntingdon, Cambridgeshire

201 HP (147 kW)

heycar

Audi A6 40 TDI Quattro Black Edition 4dr S Tronic

£30,400

Fair price

Estimated price £29,293

PE45BH Peterborough, Cambridgeshire

204 HP (150 kW) - 47.9 Mpg

Dealer

Used (2016) Audi A6 S-Line 188 HP | Super price

Avant 2.0 TDI Ultra S Line 5dr S

WC1E 7DP London, London

Super price

You save £2,501

WC1E 7DP London, London

Visit Honestjohn

Dealer

Used (2023) Audi A6 S-Line 200 HP | Good price

Saloon 40 TFSI S Line 4dr S Tronic

S41 9AJ Chesterfield, Derbyshire

Good price

You save £2,775

S41 9AJ Chesterfield, Derbyshire

Visit Motors.co.uk

Dealer

New (2025) Audi A6 S-Line 295 HP | Super price

50 TFSI e Quattro S Line 4dr S

WC1E 7DP London, London

Super price

You save £6,810

WC1E 7DP London, London

Visit Honestjohn

Dealer

Used (2022) Audi A6 S-Line 201 HP | Good price

Avant 40 TFSI S Line 5dr S

Good price

Used (2021) Audi A6 S-Line 201 HP | Good price

40 TDI S Line 4dr S Tronic

WC1E 7DP London, London

Good price

You save £1,911

WC1E 7DP London, London

Visit Carsite.co.uk

Dealer

Used (2023) Audi A6 S-Line 201 HP | Good price

40 TFSI S Line 4dr S Tronic [Tech

Good price

Used (2022) Audi A6 S-Line 201 HP | Good price

Avant 40 TFSI S Line 5dr S Tronic

IP327YB Bury St Edmunds, Suffolk

Good price

You save £1,765

IP327YB Bury St Edmunds, Suffolk

Visit Honestjohn

Dealer

Used (2019) Audi A6 S-Line 201 HP | Good price

Avant 40 TDI S Line 5dr S

WF27UA Wakefield, West Yorkshire

Good price

You save £1,300

WF27UA Wakefield, West Yorkshire

Visit Carsite.co.uk

Dealer

Used (2022) Audi A6 S-Line 201 HP | Good price

40 TFSI S Line 4dr S Tronic

WC1E 7DP London, London

Good price

You save £2,100

WC1E 7DP London, London

Visit Carsite.co.uk

Dealer

Used (2023) Audi A6 S-Line 204 HP | Good price

40 TFSI S Line 4dr S Tronic

Good price

You save £2,350

Delivered to you

Visit Buyacar

Featured deals

heycar

BMW 218 2 Series Gran Coupe i [136] M Sport 4dr DCT

£25,920

Fair price

Estimated price £25,730

NE360BQ West Boldon, Tyne and Wear

133 g CO2/km comb. - 136 HP (100 kW) - 5.8 Mpg

heycar

Mercedes CLA220 CLAAMG Line Executive 4dr Tip Auto

£30,298

Fair price

You save £302

EH153HR Fort Kinnaird

188 HP (138 kW)

heycar

BMW 320 3 Series i M Sport 5dr Step Auto Petrol Estate

£33,011

Fair price

Estimated price £31,630

NE360BQ West Boldon, Tyne and Wear

153 g CO2/km comb. - 184 HP (135 kW) - 42.0 Mpg

heycar

Mercedes CLA180 CLA Shooting BrakeAMG Line Premium Plus 5dr Tip Auto

£25,999

Good price

You save £1,401

EH288QW Newbridge

134 HP (98 kW)

heycar

BMW 218 2 Series i M Sport Gran Coupe 1.5 4dr

£26,964

Fair price

Estimated price £25,951

NE360BQ West Boldon, Tyne and Wear

133 g CO2/km comb. - 136 HP (100 kW) - 48.7 Mpg

heycar

Audi A4 Avant S line 35 TDI 163 PS S tronic 2.0 5dr

£24,995

Fair price

Estimated price £24,397

PH15AS Perth

142 g CO2/km comb. - 161 HP (118 kW) - 52.3 Mpg

heycar

Audi A4 35 TDI Black Edition 4dr S Tronic

£29,630

Fair price

Estimated price £28,766

NE47LA Newcastle, Tyne and Wear

161 HP (118 kW)

Carwow

Mercedes C200 - C-Class EstateAMG Line Premium 5dr 9G-Tronic

£24,468

Super price

You save £5,432

SR53NX, Tyne and Wear

155 g CO2/km comb. - 204 HP (150 kW) - 6.9 Mpg

Carwow

BMW 320 3 Series i M Sport Saloon 2.0 4dr

£24,891

Fair price

Estimated price £24,194

NE360BQ, Tyne and Wear

146 g CO2/km comb. - 184 HP (135 kW) - 44.1 Mpg

Carwow

BMW 320 3 Series d M Sport Saloon 2.0 4dr

£28,186

Fair price

Estimated price £27,254

NE360BQ, Tyne and Wear

122 g CO2/km comb. - 190 HP (139 kW) - 57.6 Mpg

heycar

Audi A4 Avant S line 40 TFSI 190 PS S tronic

£20,900

Fair price

Estimated price £20,147

NN55DH Northampton, Northamptonshire

137 g CO2/km comb. - 190 HP (139 kW) - 47.1 Mpg

Carwow

Audi A4 -40 TFSI 204 Black Edition 4dr S Tronic

£21,897

Fair price

You save £1,003

NE297TE Newcastle, Tyne and Wear

156 g CO2/km comb. - 204 HP (150 kW) - 6.9 Mpg

heycar

Audi A6 Avant 40 TFSI Sport 5dr S Tronic

£26,995

Good price

You save £2,105

PH15AS Perth

201 HP (147 kW)

heycar

Audi A6 Avant 40 TFSI S Line 5dr S Tronic

£28,900

Fair price

You save £700

NN55DH Northampton, Northamptonshire

201 HP (147 kW)

heycar

Audi A6 Avant 40 TDI Quattro S Line 5dr S Tronic

£29,400

Good price

You save £2,500

PE296WP Huntingdon, Cambridgeshire

201 HP (147 kW)

heycar

Audi A6 40 TDI Quattro Black Edition 4dr S Tronic

£30,400

Fair price

Estimated price £29,293

PE45BH Peterborough, Cambridgeshire

204 HP (150 kW) - 47.9 Mpg

heycar

Audi A6 45 TFSI 265 Quattro Sport 4dr S Tronic

£20,700

Good price

You save £1,900

PE296WP Huntingdon, Cambridgeshire

261 HP (191 kW) - 34.0 Mpg

Carwow

Audi A6 -2.0 TDI Quattro S Line 4dr Tronic

£13,000

Fair price

You save £1,000

NE51NB, Tyne and Wear

131 g CO2/km comb. - 190 HP (139 kW) - 5.0 Mpg

Carwow

Audi A6 -Avant 2.0 TDI Ultra S Line 5dr Tronic

£11,350

Super price

You save £2,550

NE51NB, Tyne and Wear

118 g CO2/km comb. - 190 HP (139 kW) - 4.5 Mpg

Carwow

Audi A6 -2.0 TDI Ultra Black Edition 4dr

£11,900

Fair price

Estimated price £11,720

NE51NB, Tyne and Wear

119 g CO2/km comb. - 190 HP (139 kW) - 4.5 Mpg

Dealer

Used (2022) Audi A6 S-Line 204 HP | Good price

Avant 40 TDI S Line 5dr S

CO40HQ Colchester, Essex

Good price

You save £2,205

CO40HQ Colchester, Essex

Visit Carsite.co.uk

Dealer

Used (2021) Audi A6 S-Line 204 HP | Good price

AVANT 40 TDI S Line 5dr S

Good price

New (2024) Audi A6 S-Line 200 HP | Good price

40 TFSI S Line 4dr S Tronic

Good price

Used (2022) Audi A6 S-Line 201 HP | Good price

40 TFSI S Line 4dr S Tronic

Good price

Used (2022) Audi A6 S-Line 204 HP | Good price

Avant 40 TFSI S Line 5dr S

WC1E 7DP London, London

Good price

You save £1,450

WC1E 7DP London, London

Visit Honestjohn

Featured deals

heycar

BMW 218 2 Series i M Sport Gran Coupe 1.5 4dr

£26,964

Fair price

Estimated price £25,951

NE360BQ West Boldon, Tyne and Wear

133 g CO2/km comb. - 136 HP (100 kW) - 48.7 Mpg

heycar

Audi A4 Avant S line 35 TDI 163 PS S tronic 2.0 5dr

£24,995

Fair price

Estimated price £24,397

PH15AS Perth

142 g CO2/km comb. - 161 HP (118 kW) - 52.3 Mpg

heycar

Audi A4 35 TDI Black Edition 4dr S Tronic

£29,630

Fair price

Estimated price £28,766

NE47LA Newcastle, Tyne and Wear

161 HP (118 kW)

Carwow

Mercedes C200 - C-Class EstateAMG Line Premium 5dr 9G-Tronic

£24,468

Super price

You save £5,432

SR53NX, Tyne and Wear

155 g CO2/km comb. - 204 HP (150 kW) - 6.9 Mpg

Carwow

BMW 320 3 Series i M Sport Saloon 2.0 4dr

£24,891

Fair price

Estimated price £24,194

NE360BQ, Tyne and Wear

146 g CO2/km comb. - 184 HP (135 kW) - 44.1 Mpg

Carwow

BMW 320 3 Series d M Sport Saloon 2.0 4dr

£28,186

Fair price

Estimated price £27,254

NE360BQ, Tyne and Wear

122 g CO2/km comb. - 190 HP (139 kW) - 57.6 Mpg

heycar

Audi A4 Avant S line 40 TFSI 190 PS S tronic

£20,900

Fair price

Estimated price £20,147

NN55DH Northampton, Northamptonshire

137 g CO2/km comb. - 190 HP (139 kW) - 47.1 Mpg

Carwow

Audi A4 -40 TFSI 204 Black Edition 4dr S Tronic

£21,897

Fair price

You save £1,003

NE297TE Newcastle, Tyne and Wear

156 g CO2/km comb. - 204 HP (150 kW) - 6.9 Mpg

heycar

Audi A6 Avant 40 TFSI Sport 5dr S Tronic

£26,995

Good price

You save £2,105

PH15AS Perth

201 HP (147 kW)

heycar

Audi A6 Avant 40 TFSI S Line 5dr S Tronic

£28,900

Fair price

You save £700

NN55DH Northampton, Northamptonshire

201 HP (147 kW)

heycar

Audi A6 Avant 40 TDI Quattro S Line 5dr S Tronic

£29,400

Good price

You save £2,500

PE296WP Huntingdon, Cambridgeshire

201 HP (147 kW)

heycar

Audi A6 40 TDI Quattro Black Edition 4dr S Tronic

£30,400

Fair price

Estimated price £29,293

PE45BH Peterborough, Cambridgeshire

204 HP (150 kW) - 47.9 Mpg

heycar

Audi A6 45 TFSI 265 Quattro Sport 4dr S Tronic

£20,700

Good price

You save £1,900

PE296WP Huntingdon, Cambridgeshire

261 HP (191 kW) - 34.0 Mpg

Carwow

Audi A6 -2.0 TDI Quattro S Line 4dr Tronic

£13,000

Fair price

You save £1,000

NE51NB, Tyne and Wear

131 g CO2/km comb. - 190 HP (139 kW) - 5.0 Mpg

Carwow

Audi A6 -Avant 2.0 TDI Ultra S Line 5dr Tronic

£11,350

Super price

You save £2,550

NE51NB, Tyne and Wear

118 g CO2/km comb. - 190 HP (139 kW) - 4.5 Mpg

Carwow

Audi A6 -2.0 TDI Ultra Black Edition 4dr

£11,900

Fair price

Estimated price £11,720

NE51NB, Tyne and Wear

119 g CO2/km comb. - 190 HP (139 kW) - 4.5 Mpg

heycar

BMW 218 2 Series Gran Coupe i [136] M Sport 4dr DCT

£25,920

Fair price

Estimated price £25,730

NE360BQ West Boldon, Tyne and Wear

133 g CO2/km comb. - 136 HP (100 kW) - 5.8 Mpg

heycar

Mercedes CLA220 CLAAMG Line Executive 4dr Tip Auto

£30,298

Fair price

You save £302

EH153HR Fort Kinnaird

188 HP (138 kW)

heycar

BMW 320 3 Series i M Sport 5dr Step Auto Petrol Estate

£33,011

Fair price

Estimated price £31,630

NE360BQ West Boldon, Tyne and Wear

153 g CO2/km comb. - 184 HP (135 kW) - 42.0 Mpg

heycar

Mercedes CLA180 CLA Shooting BrakeAMG Line Premium Plus 5dr Tip Auto

£25,999

Good price

You save £1,401

EH288QW Newbridge

134 HP (98 kW)

Price checked by AutoUncle

Super price

Good price

Fair price

A bit pricey

Expensive