Audi S4 (diesel) • 31 cars with Valuation

Market overview: Diesel Audi S4 (June-2026): There are currently 31 used diesel Audi S4 cars for sale. Prices range from £25,096 to £48,980, with a median price of £31,990. AutoUncle has identified 5 cars as being offered below market price. The typical selling time for a diesel Audi S4 is approximately 37 days, and 67.7% of the listings have recently been reduced in price (Source: AutoUncle market data, June-2026).

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Used Audi S4 Comfort 341 HP (250 kW) 2021 Myth black metallic/myth black metallic Estate

(2021) Audi S4 Comfort 341 HP

Super price

You save £2,950

CM1 3BH Essex, Essex

190 g CO2/km comb. - 341 HP (250 kW) - 7.3 Mpg

Carwow

Used Audi S4 341 HP (250 kW) 2022 Sedan

(2022) Audi S4 341 HP

Fair price

185 g CO2/km comb. - 341 HP (250 kW) - 7.1 Mpg

Carwow

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

(2020) Audi S4 Black Edition 347 HP

Fair price

WC1E 7DP Greater London, London

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

Carwow

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

(2021) Audi A8 Black Edition 286 HP

Fair price

Estimated price £30,642

LU3 3AN Luton, Bedfordshire

191 g CO2/km comb. - 286 HP (210 kW) - 38.2 Mpg

Price checked by AutoUncle

Super price

Good price

Fair price

A bit pricey

Expensive

-9%

1 / 4

Used (2021) Audi S4 Comfort 341 HP | Super price

- Avant TDI 341 Quattro 5dr

2021
69,958 miles
Trim level: Comfort
3.0L Diesel
Estate
Automatic
341 HP (250 kW)
CO2 emissions: 190 g CO2/km comb.
7.3 mpg
Details

Super price

£27,850

£30,650

CM1 3BH Essex, Essex

Availability verified

New

1 / 4

Used (2023) Audi S4 Black Edition | Good price

Avant 3.0 TDI V6 Black Edition

2023
33,000 miles
Trim level: Black Edition
3.0L Diesel
Estate
Automatic
6.9 mpg
Details

Good price

£34,989

Motors.co.uk

B31 2JR Northfield, West Midlands

-3%

1 / 4

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

Avant 3.0 TDI V6 Estate 5dr Diesel

2020
50,600 miles
Trim level: Black Edition
3.0L Diesel
Estate
Automatic
347 HP (255 kW)
6.9 mpg
Details

Good price

£29,750

£30,896

Motors.co.uk

CV9 3NB Leicestershire, Leicestershire

-1%

1 / 4

Used (2020) Audi S4 Black Edition | Good price

3.0 TDI V6 Black Edition Tiptronic

2020
43,500 miles
Trim level: Black Edition
3.0L Diesel
Sedan
Automatic
6.9 mpg
Details

Good price

£26,975

£27,275

Motors.co.uk

PE7 3GP Yaxley, Cambridgeshire

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

(2019) Mercedes CLS350 AMG Line Premium Plus 286 HP

Fair price

Estimated price £24,358

WD3 3RT Croxley Green, Hertfordshire

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

Carwow

Used Audi A8 286 HP (210 kW) 2019 Black Sedan

(2019) Audi A8 286 HP

Fair price

You save £1,201

G32 9QA Glasgow City, Glasgow

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

Carwow

Used Mercedes CLS350 AMG line 286 HP (210 kW) 2018 Black Coupe

(2018) Mercedes CLS350 AMG line 286 HP

Fair price

BL9 6HH Greater Manchester, Manchester

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

Carwow

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

(2019) BMW 435 M Sport 313 HP

Fair price

Estimated price £21,440

BB1 3NU Lancashire, Lancashire

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

-3%

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Used (2019) Audi S4 Black Edition 341 HP | Super price

S4 TDI Quattro Black Edition 5dr

2019
72,718 miles
Trim level: Black Edition
3.0L Diesel
Estate
Automatic
341 HP (250 kW)
7.2 mpg
Details

Super price

£25,500

£26,500

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Delivered to you

-5%

1 / 4

Used (2022) Audi S4 341 HP | Fair price

- TDI 341 Quattro 4dr Tiptroni

2022
12,291 miles
3.0L Diesel
Sedan
Automatic
341 HP (250 kW)
CO2 emissions: 185 g CO2/km comb.
7.1 mpg
Details

Fair price

£34,990

£36,990

PO198TX

Availability verified

-3%

1 / 4

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

S4 TDI Quattro Black Edition 4dr

2020
38,064 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

£29,890

£30,990

WC1E 7DP Greater London, London

Availability verified

-1%

1 / 4

Used (2021) Audi S4 Black Edition | Fair price

3.0 TDI V6 Black Edition Saloon

2021
59,000 miles
Trim level: Black Edition
3.0L Diesel
Sedan
Automatic
6.9 mpg
Details

Fair price

£28,495

£28,995

Motors.co.uk

WN3 4BT Greater Manchester, Manchester

-8%

1 / 4

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

S4 TDI 341 Quattro 5dr Tiptron

2023
13,726 miles
Trim level: Design
3.0L Diesel
Estate
Automatic
341 HP (250 kW)
7.2 mpg
Details

Fair price

£40,990

£44,990

Buyacar

Delivered to you

-5%

1 / 4

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

Fair price

£30,619

£32,350

Motors.co.uk

BR6 7QR Greater London, London

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

(2018) Audi A8 Advanced 286 HP

Fair price

Estimated price £19,544

LU3 3AN Luton, Bedfordshire

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

Carwow

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

(2019) Mercedes CLS350 AMG line 286 HP

Fair price

Estimated price £21,733

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

Carwow

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

(2020) BMW 630 M Sport 265 HP

Fair price

Estimated price £19,494

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) 2020 Coupe

(2020) BMW 435 M Sport 313 HP

Fair price

Estimated price £19,845

CW7 Cheshire West And Chester, Cheshire

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

-5%

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

Avant 3.0 TDI V6 Black Edition

2020
42,738 miles
Trim level: Black Edition
3.0L Diesel
Estate
Automatic
347 HP (255 kW)
6.9 mpg
Details

Fair price

£31,938

£33,850

Motors.co.uk

BR6 7QR Greater London, London

-8%

1 / 4

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

S4 TDI Quattro Black Edition 5dr

2020
49,398 miles
Trim level: Black Edition
3.0L Diesel
Estate
Automatic
347 HP (255 kW)
7.2 mpg
Details

Fair price

£31,700

£34,499

Buyacar

Delivered to you

1 / 4

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

Avant TDI 347 PS tiptronic

2020
43,698 miles
Trim level: Comfort
3.0L Diesel
Estate
Automatic
347 HP (255 kW)
6.9 mpg
Details

Fair price

£31,990

Exchange and Mart

BB1 3HT Blackburn, Lancashire

1 / 3

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

Avant 3.0 TDI V6 Estate 5dr Diesel

2019
58,764 miles
Trim level: Comfort
3.0L Diesel
Estate
Automatic
347 HP (255 kW)
Details

Fair price

£29,696

Motors.co.uk

WA5 7YF Westbrook, Cheshire

1 / 4

Used (2020) Audi S4 Black Edition 341 HP | Fair price

S4 TDI Quattro Black Edition 5dr

2020
58,200 miles
Trim level: Black Edition
3.0L Diesel
Estate
Automatic
341 HP (250 kW)
7.2 mpg
Details

Fair price

£31,250

£31,500

Buyacar

Delivered to you

-1%

1 / 4

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

3.0 TDI V6 Saloon 4dr Diesel

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

Fair price

£22,495

£22,795

Motors.co.uk

WV14 6BD West Midlands, West Midlands

1 / 4

Used (2019) Audi S4 Comfort | Fair price

Avant 3.0 TDI V6 Tiptronic quattro

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

Fair price

£29,995

Motors.co.uk

HX5 0RY West Yorkshire, West Yorkshire

1 / 4

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

Avant 3.0 TDI V6 Black Edition

2020
67,000 miles
Trim level: Black Edition
3.0L Diesel
Estate
Automatic
347 HP (255 kW)
6.9 mpg
Details

Fair price

£28,489

Motors.co.uk

HG3 1DE Follifoot, North Yorkshire

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

£26,990

Exchange and Mart

Lancashire, Lancashire

1 / 4

Used (2020) Audi S4 347 HP | A bit pricey

- Avant TDI Quattro 5dr Tiptro

2020
44,778 miles
3.0L Diesel
Estate
Automatic
347 HP (255 kW)
CO2 emissions: 186 g CO2/km comb.
7.1 mpg
Details

A bit pricey

£32,995

£32,990

PO35FH

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Used BMW 435 M Sport 313 HP (230 kW) 2020 Coupe

(2020) BMW 435 M Sport 313 HP

Fair price

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

Carwow

New Audi A8 Black Edition 286 HP (210 kW) 2025 Black Sedan

(2025) Audi A8 Black Edition 286 HP

Fair price

Estimated price £56,403

UB7 0LW Harmondsworth, London

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

Carwow

Used BMW 630 265 HP (194 kW) 2020 Coupe

(2020) BMW 630 265 HP

Super price

You save £2,601

CW7 Cheshire West And Chester, Cheshire

181 g CO2/km comb. - 265 HP (194 kW) - 6.9 Mpg

Carwow

Used BMW 435 M Sport 313 HP (230 kW) 2020 Coupe

(2020) BMW 435 M Sport 313 HP

Fair price

Estimated price £18,382

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

-1%

1 / 4

Used (2020) Audi S4 | A bit pricey

Avant TDI V6

2020
43,643 miles
3.0L Diesel
Estate
Automatic
6.9 mpg
Details

A bit pricey

£31,995

£32,495

Motors.co.uk

DE5 8LG Derbyshire, Derbyshire

-2%

1 / 4

Used (2020) Audi S4 Black Edition | A bit pricey

Avant 3.0 TDI V6 Black Edition

2020
44,700 miles
Trim level: Black Edition
3.0L Diesel
Estate
Automatic
6.9 mpg
Details

A bit pricey

£33,999

£34,999

Motors.co.uk

CV9 3NB Leicestershire, Leicestershire

1 / 4

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

Avant 3.0 TDI V6 Black Edition

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

A bit pricey

£35,990

Motors.co.uk

S80 2QD Nottinghamshire, Nottinghamshire

-2%

1 / 4

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

S4 TDI 341 Quattro Black Edition

2024
10,178 miles
Trim level: Black Edition
3.0L Diesel
Estate
Automatic
341 HP (250 kW)
6.9 mpg
Details

Expensive

£48,490

£49,980

Motors.co.uk

ST16 1GZ Staffordshire, Staffordshire

-9%

1 / 4

Used (2024) Audi S4 Black Edition 336 HP | Expensive

S4 TDI 341 Quattro Black Edition

2024
10,148 miles
Trim level: Black Edition
3.0L Diesel
Estate
Automatic
336 HP (247 kW)
7.2 mpg
Details

Expensive

£47,500

£52,500

Buyacar

Delivered to you

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Used Mercedes CLS350 AMG Line Premium Plus 258 HP (189 kW) 2016 White Coupe

(2016) Mercedes CLS350 AMG Line Premium Plus 258 HP

Fair price

CW7 Cheshire West And Chester, Cheshire

142 g CO2/km comb. - 258 HP (189 kW) - 51.4 Mpg

Carwow

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

(2017) BMW 640 M Sport 313 HP

Fair price

152 g CO2/km comb. - 313 HP (230 kW) - 5.7 Mpg

Carwow

Used BMW 435 M Sport 313 HP (230 kW) 2020 Coupe

(2020) BMW 435 M Sport 313 HP

Good price

You save £1,705

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

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

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