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(S-Line) Audi A6 used • 28 cars for sale – Compares prices!

Featured deals

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 Avant 40 TFSI Sport 5dr S Tronic

£26,995

Good price

You save £2,105

PH15AS Perth

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 Avant 45 TFSI Quattro Sport 5dr S Tronic

£23,634

Good price

You save £1,966

NE47DF Scotswood Road, Tyne and Wear

187 g CO2/km comb. - 245 HP (180 kW) - 43.0 Mpg

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 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 -40 TFSI Sport 4dr S Tronic [Tech Pack]

£22,697

Super price

You save £4,703

NE297TE Newcastle, Tyne and Wear

162 g CO2/km comb. - 204 HP (150 kW) - 7.1 Mpg

Carwow

Audi A6 45 TFSI 265 Quattro Sport 4dr S Tronic

£20,176

Super price

You save £3,224

NE297TE Newcastle, Tyne and Wear

173 g CO2/km comb. - 265 HP (194 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

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)

heycar

BMW 320 3 Series i xDrive M Sport 4dr Step Auto

£25,995

Fair price

You save £205

NE47YW Newcastle Upon Tyne, Tyne and Wear

181 HP (133 kW)

heycar

BMW 320 3 Series d M Sport Saloon 2.0 4dr

£28,186

Fair price

Estimated price £27,254

NE360BQ West Boldon, Tyne and Wear

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

Audi A4 40 TFSI 204 Black Edition 4dr S Tronic

£31,011

Fair price

Estimated price £30,433

SR51JQ Sunderland, Tyne and Wear

201 HP (147 kW)

heycar

BMW 320 3 Series i M Sport Saloon 2.0 4dr

£24,891

Fair price

Estimated price £24,194

NE360BQ West Boldon, Tyne and Wear

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

heycar

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

£24,602

Super price

You save £2,898

SR53NX Sunderland, Tyne and Wear

201 HP (147 kW)

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

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

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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 (2024) Audi A6 S-Line 201 HP | Good price

40 TFSI S Line 4dr S Tronic

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 £1,539

WC1E 7DP London, London

Visit Carsite.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 Motors.co.uk

Dealer

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

40 TFSI S Line 4dr S Tronic

Good price

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

40 TFSI S Line 4dr S Tronic

Good price

You save £2,401

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

Avant 40 TDI Quattro S Line 5dr S

SR51JQ Sunderland, Tyne and Wear

Fair price

You save £1,083

SR51JQ Sunderland, Tyne and Wear

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 A6 S-Line 201 HP | Fair price

40 TFSI S Line 4dr S Tronic

Fair price

You save £900

Delivered to you

Visit heycar

Featured deals

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 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 -40 TFSI Sport 4dr S Tronic [Tech Pack]

£22,697

Super price

You save £4,703

NE297TE Newcastle, Tyne and Wear

162 g CO2/km comb. - 204 HP (150 kW) - 7.1 Mpg

Carwow

Audi A6 45 TFSI 265 Quattro Sport 4dr S Tronic

£20,176

Super price

You save £3,224

NE297TE Newcastle, Tyne and Wear

173 g CO2/km comb. - 265 HP (194 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

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)

heycar

BMW 320 3 Series i xDrive M Sport 4dr Step Auto

£25,995

Fair price

You save £205

NE47YW Newcastle Upon Tyne, Tyne and Wear

181 HP (133 kW)

heycar

BMW 320 3 Series d M Sport Saloon 2.0 4dr

£28,186

Fair price

Estimated price £27,254

NE360BQ West Boldon, Tyne and Wear

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

Audi A4 40 TFSI 204 Black Edition 4dr S Tronic

£31,011

Fair price

Estimated price £30,433

SR51JQ Sunderland, Tyne and Wear

201 HP (147 kW)

heycar

BMW 320 3 Series i M Sport Saloon 2.0 4dr

£24,891

Fair price

Estimated price £24,194

NE360BQ West Boldon, Tyne and Wear

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

heycar

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

£24,602

Super price

You save £2,898

SR53NX Sunderland, Tyne and Wear

201 HP (147 kW)

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

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

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 Avant 40 TFSI Sport 5dr S Tronic

£26,995

Good price

You save £2,105

PH15AS Perth

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 Avant 45 TFSI Quattro Sport 5dr S Tronic

£23,634

Good price

You save £1,966

NE47DF Scotswood Road, Tyne and Wear

187 g CO2/km comb. - 245 HP (180 kW) - 43.0 Mpg

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

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

Avant 40 TFSI S Line 5dr S

Fair price

You save £700

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 A6 S-Line 201 HP | Fair price

Avant 40 TFSI S Line 5dr S

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

-2.0 TDI Quattro S Line 4dr

NE51NB, Tyne and Wear

Fair price

You save £1,000

NE51NB, Tyne and Wear

Visit Carwow

Dealer

Used (2024) Audi A6 S-Line 204 HP | Fair price

AVANT 40 TDI Quattro S Line 5dr S

Fair price

Estimated price £37,463

Delivered to you

Visit Buyacar

Dealer

Used (2024) Audi A6 S-Line 204 HP | Fair price

Diesel Avant 40 TDI Quattro S Line

Fair price

Used (2017) Audi A6 S-Line 190 HP | Fair price

Saloon 2.0 TDI Quattro S Line 4dr

NE5 1NB Newcastle Upon Tyne, Tyne and Wear

Fair price

You save £500

NE5 1NB Newcastle Upon Tyne, Tyne and Wear

Visit Motors.co.uk

Dealer

Used (2016) Audi A6 S-Line | Fair price

Saloon (2016/66)2.0 TDI Quattro S

NE37 3ES Washington, Tyne and Wear

Fair price

You save £810

NE37 3ES Washington, Tyne and Wear

Visit Motors.co.uk

Dealer

Used (2019) Audi A6 S-Line 200 HP | Fair price

40 TDI S Line 4dr S Tronic

Fair price

Used (2024) Audi A6 S-Line 200 HP | Fair price

40 TFSI S Line 4dr S Tronic

Fair price

Used (2025) Audi A6 S-Line 201 HP | A bit pricey

Avant 40 TDI Quattro S Line 5dr S

WC1E 7DP London, London

A bit pricey

Estimated price £39,764

WC1E 7DP London, London

Visit Carsite.co.uk

Featured deals

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

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)

heycar

BMW 320 3 Series i xDrive M Sport 4dr Step Auto

£25,995

Fair price

You save £205

NE47YW Newcastle Upon Tyne, Tyne and Wear

181 HP (133 kW)

heycar

BMW 320 3 Series d M Sport Saloon 2.0 4dr

£28,186

Fair price

Estimated price £27,254

NE360BQ West Boldon, Tyne and Wear

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

Audi A4 40 TFSI 204 Black Edition 4dr S Tronic

£31,011

Fair price

Estimated price £30,433

SR51JQ Sunderland, Tyne and Wear

201 HP (147 kW)

heycar

BMW 320 3 Series i M Sport Saloon 2.0 4dr

£24,891

Fair price

Estimated price £24,194

NE360BQ West Boldon, Tyne and Wear

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

heycar

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

£24,602

Super price

You save £2,898

SR53NX Sunderland, Tyne and Wear

201 HP (147 kW)

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

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

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 Avant 40 TFSI Sport 5dr S Tronic

£26,995

Good price

You save £2,105

PH15AS Perth

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 Avant 45 TFSI Quattro Sport 5dr S Tronic

£23,634

Good price

You save £1,966

NE47DF Scotswood Road, Tyne and Wear

187 g CO2/km comb. - 245 HP (180 kW) - 43.0 Mpg

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 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 -40 TFSI Sport 4dr S Tronic [Tech Pack]

£22,697

Super price

You save £4,703

NE297TE Newcastle, Tyne and Wear

162 g CO2/km comb. - 204 HP (150 kW) - 7.1 Mpg

Carwow

Audi A6 45 TFSI 265 Quattro Sport 4dr S Tronic

£20,176

Super price

You save £3,224

NE297TE Newcastle, Tyne and Wear

173 g CO2/km comb. - 265 HP (194 kW) - 34.0 Mpg

Dealer

Used (2019) Audi A6 S-Line 245 HP | A bit pricey

Saloon S line 45 TFSI quattro 245

WC1E 7DP London, London

A bit pricey

Estimated price £21,258

WC1E 7DP London, London

Visit Honestjohn

Dealer

Used (2024) Audi A6 S-Line 204 HP | A bit pricey

40 TFSI S Line 5dr S Tronic

A bit pricey

Estimated price £35,317

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 (2022) Audi A6 S-Line 261 HP | Expensive

Avant 45 TFSI 265 Quattro S Line

Expensive

Estimated price £31,154

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 A6 S-Line 295 HP | Expensive

50 TFSI e 17.9kWh Quattro S Line

Expensive

Estimated price £25,263

Delivered to you

Visit heycar

Dealer

Used (2024) Audi A6 S-Line 299 HP | Not evaluated

50 TFSI e Quattro S Line 4dr S

SN57XB Swindon, Wiltshire

Not evaluated

SN57XB Swindon, Wiltshire

Visit Honestjohn

Featured deals

heycar

BMW 320 3 Series i xDrive M Sport 4dr Step Auto

£25,995

Fair price

You save £205

NE47YW Newcastle Upon Tyne, Tyne and Wear

181 HP (133 kW)

heycar

BMW 320 3 Series d M Sport Saloon 2.0 4dr

£28,186

Fair price

Estimated price £27,254

NE360BQ West Boldon, Tyne and Wear

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

Audi A4 40 TFSI 204 Black Edition 4dr S Tronic

£31,011

Fair price

Estimated price £30,433

SR51JQ Sunderland, Tyne and Wear

201 HP (147 kW)

heycar

BMW 320 3 Series i M Sport Saloon 2.0 4dr

£24,891

Fair price

Estimated price £24,194

NE360BQ West Boldon, Tyne and Wear

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

heycar

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

£24,602

Super price

You save £2,898

SR53NX Sunderland, Tyne and Wear

201 HP (147 kW)

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

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

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 Avant 40 TFSI Sport 5dr S Tronic

£26,995

Good price

You save £2,105

PH15AS Perth

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 Avant 45 TFSI Quattro Sport 5dr S Tronic

£23,634

Good price

You save £1,966

NE47DF Scotswood Road, Tyne and Wear

187 g CO2/km comb. - 245 HP (180 kW) - 43.0 Mpg

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 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 -40 TFSI Sport 4dr S Tronic [Tech Pack]

£22,697

Super price

You save £4,703

NE297TE Newcastle, Tyne and Wear

162 g CO2/km comb. - 204 HP (150 kW) - 7.1 Mpg

Carwow

Audi A6 45 TFSI 265 Quattro Sport 4dr S Tronic

£20,176

Super price

You save £3,224

NE297TE Newcastle, Tyne and Wear

173 g CO2/km comb. - 265 HP (194 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

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)

Price checked by AutoUncle

Super price

Good price

Fair price

A bit pricey

Expensive