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2021 Audi S6 • Compare 4 used cars with valuation

Market overview: Price Analysis (October-2026): A used 2021 Audi S6 typically costs between £34,238 and £50,545 • On average, used 2021 Audi S6 cars have covered 53,347 miles – with a few high-mileage examples reaching up to 76,381 miles • Depreciation and price trends over the last 12 months for the 2021 Audi S6 stand at £0.

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Used Audi RS5 Basis 450 HP (330 kW) 2021 Grey Coupe

(2021) Audi RS5 Basis 450 HP

Fair price

Estimated price £38,010

TN12 5HD East Peckham, Kent

215 g CO2/km comb. - 450 HP (330 kW) - 9.2 Mpg

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Used (2021) Audi S6 Premium 344 HP | Rare vehicle

S6 Avant 2021 Vorsprung TDI 344

2021
67,348 miles
Trim level: Premium
3.0L Diesel
Estate
Automatic
344 HP (253 kW)
CO2 emissions: 193 g CO2/km comb.
7.3 mpg
Details

£33,700

£40,600

Rare vehicle

CM1 3BH Essex, Essex

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Used (2021) Audi S6 | Rare vehicle

Vorsprung Tdi Quattro Auto

2021
77,975 miles
3.0L Diesel
Estate
Automatic
Details

£37,289

Rare vehicle

Exchange and Mart

Bedfordshire, Bedfordshire

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Used (2021) Audi S6 Comfort | Rare vehicle

Vorsprung Tdi Mhev Quattro Auto

2021
40,064 miles
Trim level: Comfort
3.0L Diesel
Estate
Automatic
Details

£47,995

Rare vehicle

Exchange and Mart

Cambridgeshire, Cambridgeshire

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Used (2021) Audi S6 Comfort 345 HP | Rare vehicle

Tdi Quattro Vorsprung Estate

2021
28,000 miles
Trim level: Comfort
3.0L Diesel
Estate
Automatic
345 HP (253 kW)
Details

£50,995

Rare vehicle

Exchange and Mart

Bedfordshire, Bedfordshire

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Used Mercedes E53 AMG AMG 435 HP (319 kW) 2023 White Sedan

(2023) Mercedes E53 AMG AMG 435 HP

Fair price

RG12 9FR Berkshire, Berkshire

215 g CO2/km comb. - 435 HP (319 kW) - 9.2 Mpg

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Used Mercedes C43 AMG Premium Plus 408 HP (300 kW) 2023 Black Estate

(2023) Mercedes C43 AMG Premium Plus 408 HP

Fair price

BL9 9ST Blackford Bridge, Manchester

205 g CO2/km comb. - 408 HP (300 kW) - 9.1 Mpg

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Used BMW M340 M Sport 374 HP (275 kW) 2023 Blue Sedan

(2023) BMW M340 M Sport 374 HP

Fair price

You save £1,130

RH1 5EP Salfords, Surrey

177 g CO2/km comb. - 374 HP (275 kW) - 34.9 Mpg

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Used BMW M340 M Sport 374 HP (275 kW) 2023 Blue Estate

(2023) BMW M340 M Sport 374 HP

Fair price

Estimated price £45,033

GU1 1RU Surrey, Surrey

182 g CO2/km comb. - 374 HP (275 kW) - 33.6 Mpg

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