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Audi S4 (diesel) • 23 cars with Valuation

Market overview: Diesel Audi S4 (September-2026): There are currently 23 used diesel Audi S4 cars for sale. Prices range from £24,975 to £43,663, with a median price of £29,993. AutoUncle has identified 5 cars as being offered below market price. The typical selling time for a diesel Audi S4 is approximately 32 days, and 78.3% of the listings have recently been reduced in price (Source: AutoUncle market data, September-2026).

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Used Audi S4 Black Edition 347 HP (255 kW) 2020 Grey Sedan

(2020) Audi S4 Black Edition 347 HP

Fair price

G32 9QA Glasgow City, Glasgow

182 g CO2/km comb. - 347 HP (255 kW) - 6.9 Mpg

Carwow

Used Audi S4 Black Edition 341 HP (250 kW) 2023 Green Estate

(2023) Audi S4 Black Edition 341 HP

Fair price

Estimated price £33,824

CW1 6YG Cheshire East, Cheshire

191 g CO2/km comb. - 341 HP (250 kW) - 7.2 Mpg

Carwow

Used Audi A8 Black Edition 286 HP (210 kW) 2022 Black Sedan

(2022) Audi A8 Black Edition 286 HP

Fair price

Estimated price £33,576

BL9 9ST Blackford Bridge, Manchester

188 g CO2/km comb. - 286 HP (210 kW) - 7.0 Mpg

Carwow

Used Audi A8 Black Edition 286 HP (210 kW) 2021 Grey Sedan

(2021) Audi A8 Black Edition 286 HP

Fair price

Estimated price £29,749

BL9 6HH Greater Manchester, Manchester

188 g CO2/km comb. - 286 HP (210 kW) - 37.7 Mpg

Price checked by AutoUncle

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Expensive

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-5%

1 / 4

Used (2020) Audi S4 Black Edition 347 HP | Good price

Avant 3.0 TDI V6 Black Edition

2020
50,300 miles
Trim level: Black Edition
3.0L Diesel
Estate
Automatic
347 HP (255 kW)
6.9 mpg
Details

Good price

£27,902

£29,511

Motors.co.uk

BR6 7QR Greater London, London

-3%

1 / 4

Used (2019) Audi S4 Comfort | Good price

Avant 3.0 TDI V6 Tiptronic quattro

2019
54,700 miles
Trim level: Comfort
3.0L Diesel
Estate
Automatic
Details

Good price

£27,995

£28,995

Motors.co.uk

HX5 0RY West Yorkshire, West Yorkshire

1 / 4

Used (2021) Audi S4 Comfort | Good price

3.0 TDI V6

2021
36,000 miles
Trim level: Comfort
3.0L Diesel
Sedan
Automatic
6.9 mpg
Details

Good price

£27,995

Motors.co.uk

SO30 4BG Hampshire, Hampshire

-1%

1 / 4

Used (2021) Audi S4 Black Edition | Good price

Avant 3.0 TDI V6 Black Edition

2021
71,100 miles
Trim level: Black Edition
3.0L Diesel
Estate
Automatic
6.9 mpg
Details

Good price

£26,995

£27,495

Motors.co.uk

NP20 2NS Newport, Gwent

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Used Mercedes CLS350 AMG line 286 HP (210 kW) 2019 Black Coupe

(2019) Mercedes CLS350 AMG line 286 HP

Fair price

You save £1,101

SO18 1BH Southampton, Hampshire

190 g CO2/km comb. - 286 HP (210 kW) - 6.8 Mpg

Carwow

Used BMW 435 M Sport 313 HP (230 kW) 2019 Blue Coupe

(2019) BMW 435 M Sport 313 HP

Fair price

BB1 3NU Lancashire, Lancashire

183 g CO2/km comb. - 313 HP (230 kW) - 6.9 Mpg

Carwow

Used Mercedes CLS350 AMG line 286 HP (210 kW) 2019 Black Coupe

(2019) Mercedes CLS350 AMG line 286 HP

Fair price

TN38 9QQ Hastings, East Sussex

189 g CO2/km comb. - 286 HP (210 kW) - 6.8 Mpg

Carwow

Used Audi A8 Black Edition 286 HP (210 kW) 2023 Grey Sedan

(2023) Audi A8 Black Edition 286 HP

Fair price

Estimated price £42,651

L5 9XN Merseyside, Merseyside

188 g CO2/km comb. - 286 HP (210 kW) - 7.2 Mpg

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Used (2020) Audi S4 Black Edition 347 HP | Good price

3.0 TDI V6 Black Edition Tiptronic

2020
43,500 miles
Trim level: Black Edition
3.0L Diesel
Sedan
Automatic
347 HP (255 kW)
6.9 mpg
Details

Good price

£24,975

£25,975

Motors.co.uk

PE7 3GP Yaxley, Cambridgeshire

New

1 / 4

Used (2020) Audi S4 Black Edition 347 HP | Fair price

S4 2020 Black Edition TDI Quattro

2020
28,803 miles
Trim level: Black Edition
3.0L Diesel
Sedan
Automatic
347 HP (255 kW)
CO2 emissions: 182 g CO2/km comb.
6.9 mpg
Details

Fair price

£28,599

G32 9QA Glasgow City, Glasgow

Availability verified

-3%

1 / 4

Used (2023) Audi S4 Black Edition 341 HP | Fair price

Black Edition TDI 341 PS tiptronic

2023
42,097 miles
Trim level: Black Edition
3.0L Diesel
Estate
Automatic
341 HP (250 kW)
CO2 emissions: 191 g CO2/km comb.
7.2 mpg
Details

Fair price

£34,990

£36,390

CW1 6YG Cheshire East, Cheshire

Availability verified

-1%

1 / 4

Used (2023) Audi S4 Advanced 341 HP | Fair price

3.0 TDI V6 Saloon 4dr Diesel

2023
24,557 miles
Trim level: Advanced
3.0L Diesel
Sedan
Automatic
341 HP (250 kW)
7.2 mpg
Details

Fair price

£32,848

£33,223

Motors.co.uk

BR6 7QR Greater London, London

-2%

1 / 4

Used (2022) Audi S4 Black Edition | Fair price

Avant 3.0 TDI V6 Black Edition

2022
41,333 miles
Trim level: Black Edition
3.0L Diesel
Estate
Automatic
6.9 mpg
Details

Fair price

£32,990

£33,990

Motors.co.uk

S80 2QD Nottinghamshire, Nottinghamshire

-7%

1 / 4

Used (2020) Audi S4 Sport 347 HP | Fair price

3.0 TDI V6 Saloon 4dr Diesel

2020
59,612 miles
Trim level: Sport
3.0L Diesel
Sedan
Automatic
347 HP (255 kW)
6.9 mpg
Details

Fair price

£24,980

£26,990

Exchange and Mart

Lancashire, Lancashire

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Used BMW 630 M Sport 265 HP (194 kW) 2020 Coupe

(2020) BMW 630 M Sport 265 HP

Fair price

Estimated price £19,116

CA3 0ET Cumberland, Cumbria

179 g CO2/km comb. - 265 HP (194 kW) - 6.8 Mpg

Carwow

Used BMW 435 M Sport 313 HP (230 kW) 2018 Black Coupe

(2018) BMW 435 M Sport 313 HP

Fair price

You save £1,001

CW73AL Cheshire West And Chester, Cheshire

183 g CO2/km comb. - 313 HP (230 kW) - 45.6 Mpg

Carwow

Used Mercedes CLS350 AMG Line Premium Plus 286 HP (210 kW) 2019 Black Coupe

(2019) Mercedes CLS350 AMG Line Premium Plus 286 HP

Fair price

RM20 3JT Thurrock, Essex

190 g CO2/km comb. - 286 HP (210 kW) - 6.8 Mpg

Carwow

Used BMW 435 M Sport 313 HP (230 kW) 2018 Black Cabriolet

(2018) BMW 435 M Sport 313 HP

Fair price

RH1 5EP Salfords, Surrey

189 g CO2/km comb. - 313 HP (230 kW) - 47.9 Mpg

1 / 3

Used (2019) Audi S4 Design 347 HP | Fair price

Avant 3.0 TDI V6 Estate 5dr Diesel

2019
57,000 miles
Trim level: Design
3.0L Diesel
Estate
Automatic
347 HP (255 kW)
Details

Fair price

£27,990

Motors.co.uk

DH5 0LG Easington Lane, Tyne And Wear

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Used (2020) Audi S4 Black Edition 347 HP | Fair price

Avant 3.0 TDI V6 Black Edition

2020
37,300 miles
Trim level: Black Edition
3.0L Diesel
Estate
Automatic
347 HP (255 kW)
6.9 mpg
Details

Fair price

£31,990

£32,990

Motors.co.uk

S13 9BX Handsworth, South Yorkshire

-2%

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Used (2023) Audi S4 Black Edition 341 HP | Fair price

Avant 3.0 TDI V6 Black Edition

2023
88,107 miles
Trim level: Black Edition
3.0L Diesel
Estate
Automatic
341 HP (250 kW)
7.2 mpg
Details

Fair price

£27,990

£28,700

Motors.co.uk

PE1 5PE Peterborough, Cambridgeshire

-1%

1 / 4

Used (2020) Audi S4 Black Edition 347 HP | Fair price

Avant 3.0 TDI V6 Black Edition

2020
87,000 miles
Trim level: Black Edition
3.0L Diesel
Estate
Automatic
347 HP (255 kW)
6.9 mpg
Details

Fair price

£24,990

£25,490

Motors.co.uk

BD8 9AJ West Yorkshire, West Yorkshire

New

1 / 4

Used (2019) Audi S4 Comfort 342 HP | Fair price

3.0 TDI V6

2019
61,000 miles
Trim level: Comfort
3.0L Diesel
Sedan
Automatic
342 HP (251 kW)
Details

Fair price

£24,995

Motors.co.uk

WS10 7JJ West Midlands, West Midlands

-2%

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Used (2019) Audi S4 Black Edition 347 HP | A bit pricey

S4 Avant 2019 Black Edition TDI

2019
45,023 miles
Trim level: Black Edition
3.0L Diesel
Estate
Automatic
347 HP (255 kW)
CO2 emissions: 187 g CO2/km comb.
7.2 mpg
Details

A bit pricey

£32,241

£32,990

HP19 8AL Buckinghamshire, Buckinghamshire

Availability verified

-5%

1 / 4

Used (2022) Audi S4 Black Edition | A bit pricey

Avant 3.0 TDI V6 Black Edition

2022
33,937 miles
Trim level: Black Edition
3.0L Diesel
Estate
Automatic
6.9 mpg
Details

A bit pricey

£35,850

£38,000

Motors.co.uk

GL51 7PA Gloucestershire, Gloucestershire

-1%

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Used (2019) Audi S4 Basis 347 HP | A bit pricey

3.0 TDI V6 Saloon 4dr Diesel

2019
85,802 miles
Trim level: Basis
3.0L Diesel
Sedan
Automatic
347 HP (255 kW)
Details

A bit pricey

£22,495

£22,795

Motors.co.uk

WV14 6BD West Midlands, West Midlands

-10%

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Used (2024) Audi S4 Black Edition 341 HP | Expensive

S4 Avant 2024 Black Edition TDI

2024
19,756 miles
Trim level: Black Edition
3.0L Diesel
Estate
Automatic
341 HP (250 kW)
CO2 emissions: 191 g CO2/km comb.
7.3 mpg
Details

Expensive

£42,750

£47,790

WA5 7YD Warrington, Cheshire

Availability verified

-16%

1 / 4

Used (2021) Audi S4 Black Edition 341 HP | Expensive

Avant 3.0 TDI V6 Vorsprung

2021
33,748 miles
Trim level: Black Edition
3.0L Diesel
Estate
Automatic
341 HP (250 kW)
7.2 mpg
Details

Expensive

£37,831

£45,275

Motors.co.uk

KT17 3LA Surrey, Surrey

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Used Audi A8 S-Line 286 HP (210 kW) 2019 Grey Sedan

(2019) Audi A8 S-Line 286 HP

Fair price

Estimated price £18,826

PE4 6QZ Peterborough, Cambridgeshire

191 g CO2/km comb. - 286 HP (210 kW) - 7.3 Mpg

Carwow

Used BMW 435 M Sport 313 HP (230 kW) 2018 White Coupe

(2018) BMW 435 M Sport 313 HP

Fair price

Estimated price £18,086

HG3 1LG Pannal, North Yorkshire

183 g CO2/km comb. - 313 HP (230 kW) - 6.9 Mpg

Carwow

Used Audi A8 Advanced 286 HP (210 kW) 2018 Blue Sedan

(2018) Audi A8 Advanced 286 HP

Fair price

LU3 3AN Luton, Bedfordshire

156 g CO2/km comb. - 286 HP (210 kW) - 6.9 Mpg

Carwow

Used BMW 435 M Sport 313 HP (230 kW) 2017 Black Coupe

(2017) BMW 435 M Sport 313 HP

Fair price

Estimated price £18,300

CW73AL Cheshire West And Chester, Cheshire

183 g CO2/km comb. - 313 HP (230 kW) - 49.6 Mpg

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Used (2024) Audi S4 Black Edition 341 HP

S4 Avant 2024 Black Edition TDI

2024
9,632 miles
Trim level: Black Edition
3.0L Diesel
Estate
Automatic
341 HP (250 kW)
CO2 emissions: 191 g CO2/km comb.
7.3 mpg
Details

£44,990

£46,490

Not evaluated

B78 3JF Staffordshire, Staffordshire

Availability verified

-5%

1 / 4

Used (2023) Audi S4 341 HP

S4 Avant 2023 Vorsprung TDI 341

2023
19,464 miles
3.0L Diesel
Estate
Automatic
341 HP (250 kW)
CO2 emissions: 193 g CO2/km comb.
6.9 mpg
Details

£43,700

£46,000

Not evaluated

Motors.co.uk

CM1 3BH Essex, Essex

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Carwow

Used BMW 435 M Sport 313 HP (230 kW) 2019 White Coupe

(2019) BMW 435 M Sport 313 HP

Fair price

RM13 8RH Greater London, London

183 g CO2/km comb. - 313 HP (230 kW) - 6.9 Mpg

Carwow

Used Audi A8 Sport 258 HP (189 kW) 2015 Silver Sedan

(2015) Audi A8 Sport 258 HP

Fair price

SO18 1BH Southampton, Hampshire

155 g CO2/km comb. - 258 HP (189 kW) - 5.8 Mpg

Carwow

Used Mercedes CLS350 AMG line 258 HP (189 kW) 2015 Grey Sedan

(2015) Mercedes CLS350 AMG line 258 HP

Fair price

PE4 6QZ Peterborough, Cambridgeshire

142 g CO2/km comb. - 258 HP (189 kW) - 5.4 Mpg

Carwow

Used BMW 640 M Sport 313 HP (230 kW) 2017 Grey Coupe

(2017) BMW 640 M Sport 313 HP

Good price

You save £1,700

KT11 1JJ Surrey, Surrey

147 g CO2/km comb. - 313 HP (230 kW) - 5.5 Mpg

Showing 1 - 22 of 22 results

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