0Favourites
  • Select country
    • UK
    • FR

    Filters

    • Search used cars
    • New cars coming in 2025
    • Value your car
    • Sell a car
    • Find a dealer
    • Electric cars
    • Car guides
    • Car reviews
    • Money back guarantee
    • About
    • Careers
    • Authors and experts
    • Join as a dealer
    • Terms & conditions
    • Privacy policy
    • Privacy settings
    • Cookie policy
    • Complaints
    • Buy online terms
    • Dealer terms
    • Monday-Friday, 9am-5pm
    • 020 3936 1257
    • hey@heycar.co.uk

    See what customers are saying

    “Excellent”
    Trustscore: 4.3/5
    Find us on
    Copyright 2025 heycar - All rights reserved
    heyAI search results

    Hey there!

    Our new heyAI search is still learning, and getting smarter everyday to bring you exactly what you're looking for.

    For best results, try using clear, specific phrases like this:

    • Make and model (VW Golf GTI)
    • Colour and body type (e.g. SUV, hatchback)
    • Fuel type (petrol, diesel, electric, hybrid)
    • Age of the vehicle (less than 3 years old)
    • Mileage (less than 10k miles)
    • Your budget (total/monthly)

    We're constantly improving to make your car search easier. Thanks for your patience!

    18 Audi A4 S Line 4-Door cars under £20000 for sale

    Sort by
    • Relevance
    • Distance
    • Age (oldest)
    • Age (newest)
    • Price (lowest)
    • Price (highest)
    • Miles (lowest)
    • Miles (highest)
    • Newly listed
    Reserve now
    Main listing image - Audi A4
    47

    Audi A435 TFSI S Line 4dr

    2019
    32,664 miles
    Petrol

    £17,890

    or £283 mo
    PO35FH

    *Representative example: Contract Length: 48 months, 47 Monthly Payments: £282.88, Customer Deposit: £2,683.00, Total Deposit: £2,683.50, Optional Final Payment: £7,552.50, Total Charge For Credit: £5,651.36, Total Amount Payable: £23,541.36, Representative APR: 12.80%, Interest Rate (Fixed): 12.81%, Excess Mileage Charge: 9.00ppm, Mileage Per Annum: 10,000

    Main listing image - Audi A4
    21

    Audi A435 TDI S Line 4dr S Tronic

    2021
    59,501 miles
    Diesel

    £20,000

    or £329 mo
    WF27UA

    *Representative example: Contract Length: 48 months, 47 Monthly Payments: £328.64, Customer Deposit: £3,000.00, Total Deposit: £3,000.00, Optional Final Payment: £8,315.35, Total Charge For Credit: £6,771.43, Total Amount Payable: £26,771.43, Representative APR: 13.90%, Interest Rate (Fixed): 13.83%, Excess Mileage Charge: 8.00ppm, Mileage Per Annum: 10,000

    1

    Audi A440 TFSI S Line 4dr S Tronic

    2020
    38,352 miles
    Petrol

    £19,750

    or £311 mo
    DE248AJ

    *Representative example: Contract Length: 48 months, 47 Monthly Payments: £310.16, Customer Deposit: £2,962.00, Total Deposit: £2,962.50, Optional Final Payment: £9,096.25, Total Charge For Credit: £6,896.27, Total Amount Payable: £26,646.27, Representative APR: 13.90%, Interest Rate (Fixed): 13.84%, Excess Mileage Charge: 9.00ppm, Mileage Per Annum: 10,000

    Sold
    1

    Audi A440 TFSI S Line 4dr S Tronic

    2019
    41,615 miles
    Petrol

    £18,237

    or £298 mo
    DA51BZ

    *Representative example: Contract Length: 48 months, 47 Monthly Payments: £297.67, Customer Deposit: £2,735.00, Total Deposit: £2,735.55, Optional Final Payment: £7,695.00, Total Charge For Credit: £6,194.04, Total Amount Payable: £24,431.04, Representative APR: 13.80%, Interest Rate (Fixed): 13.82%, Excess Mileage Charge: 9.00ppm, Mileage Per Annum: 10,000

    20

    Audi A42.0 TDI 190 Quattro S Line 4dr S Tronic

    2018
    33,928 miles
    Diesel

    £18,450

    or £401 mo
    SS67UQ

    *Representative example: Contract Length: 48 months, 48 Monthly Payments: £400.70, Customer Deposit: £2,767.00, Total Deposit: £2,767.50, Total Charge For Credit: £3,551.10, Total Amount Payable: £22,001.10, Representative APR: 10.90%, Interest Rate (Fixed): 10.90%

    20

    Audi A435 TFSI S Line 4dr

    2019
    33,043 miles
    Petrol

    £17,750

    or £386 mo
    SS67UQ

    *Representative example: Contract Length: 48 months, 48 Monthly Payments: £385.49, Customer Deposit: £2,662.00, Total Deposit: £2,662.50, Total Charge For Credit: £3,416.02, Total Amount Payable: £21,166.02, Representative APR: 10.90%, Interest Rate (Fixed): 10.90%

    21

    Audi A42.0T FSI S Line 4dr S Tronic

    2017
    32,081 miles
    Petrol

    £17,395

    or £378 mo
    WD258HL

    *Representative example: Contract Length: 48 months, 48 Monthly Payments: £377.78, Customer Deposit: £2,609.00, Total Deposit: £2,609.25, Total Charge For Credit: £3,347.69, Total Amount Payable: £20,742.69, Representative APR: 10.90%, Interest Rate (Fixed): 5.66%

    36

    Audi A41.4T FSI S Line 4dr [Leather/Alc]

    2017
    44,870 miles
    Petrol

    £12,883

    BB71ED
    40

    Audi A42.0T FSI S Line 4dr

    2016
    75,196 miles
    Petrol

    £10,760

    £780 off
    £9,980
    B120JU
    1

    Audi A435 TFSI S Line 4dr

    2019
    48,719 miles
    Petrol

    £15,053

    or £272 mo
    NE289NT

    *Representative example: Contract Length: 48 months, 47 Monthly Payments: £271.99, Customer Deposit: £2,257.00, Total Deposit: £2,257.95, Optional Final Payment: £3,925.00, Total Charge For Credit: £3,913.48, Total Amount Payable: £18,966.48, Representative APR: 11.90%, Interest Rate (Fixed): 7.63%, Excess Mileage Charge: 12.00ppm, Mileage Per Annum: 10,000

    Sold
    35

    Audi A435 TFSI S Line 4dr S Tronic

    2020
    42,002 miles
    Petrol

    £18,249

    or £309 mo
    NG56BN

    *Representative example: Contract Length: 49 months, 48 Monthly Payments: £308.41, Customer Deposit: £2,737.00, Total Deposit: £2,737.35, Optional Final Payment: £6,863.50, Total Charge For Credit: £6,155.53, Total Amount Payable: £24,404.53, Representative APR: 13.90%, Interest Rate (Fixed): 6.79%, Excess Mileage Charge: 8.20ppm, Mileage Per Annum: 10,000

    40

    Audi A42.0T FSI S Line 4dr

    2017
    69,168 miles
    Petrol

    £11,880

    SY13AB
    24

    Audi A43.0 TDI S Line 4dr S Tronic

    2017
    55,262 miles
    Diesel

    £15,000

    PH15AE
    11

    Audi A41.4T FSI S Line 4dr [Leather/Alc]

    2017
    65,378 miles
    Petrol

    £11,301

    NG184TR
    40

    Audi A435 TFSI S Line 4dr S Tronic

    2019
    23,167 miles
    Petrol

    £18,817

    MK150DQ
    5

    Audi A440 TFSI S Line 4dr S Tronic

    2019
    74,402 miles
    Petrol

    £15,390

    M160GU
    1

    Audi A42.0T FSI 252 Quattro S Line 4dr S Tronic

    2016
    65,000 miles
    Petrol

    £14,850

    HP79JD
    40

    Audi A41.4T FSI S Line 4dr [Leather/Alc]

    2018
    78,079 miles
    Petrol

    £10,680

    LS126BZ

    Audi models

    A1A1 CitycarverA3A3 SaloonA4A4 AllroadA4 AvantA5A5 CabrioletA5 SportbackA6A6 AllroadA6 AvantA7A8e-trone-tron GTe-tron Se-tron SportbackQ2Q3Q4Q4 e-tron SportbackQ5Q5 SportbackQ6Q6 E TronQ7Q8Q8 e-tronR8R8 SpyderRS3RS4RS5RS6Rs7RS7RS e-tron GTRS Q3RS Q8S1S3S4S5S6S7S8SQ2SQ5Sq6 E TronSQ7SQ8TTTT RoadsterTT RSTT S
    Filters (6)
    Enter postcode

    Can’t find what you’re looking for?

    Create a personalised stock alert and we’ll let you know when your perfect car’s available.
    Great price
    Great price
    Great price
    Good price
    Good price
    Great price
    Fair price
    Great price
    Good price
    Fair price
    Good price
    1. Home
    2. …
    3. Cars for Sale
    4. Audi
    5. A4

    Filters (5)

    Audi
    A4
    S Line
    Postcode
    Postcode
    Please enter a valid UK postcode
    Distance: {distance, select, all {All} 1 {{distance} mile} other {{distance} miles} }(16)
    Price
    Min
    Max
    (16)
    Make (1)

    Popular Makes

    All available makes

      A

    • B

    • C

    • F

    • I

    • J

    • L

    • M

    • P

    • R

    • T

    • V

    Model (1)

      Audi

    Model variants (1)

      A4 variants

    Fuel type
    Year
    All our cars are less than 10 years old
    Min
    Max
    (16)
    Mileage
    At heycar, all our cars have less than 100,000 miles on the clock
    Min
    Max
    ( 16)
    Gearbox
    Colour
    Doors (1)
    Seats
    Body type
    Engine Size
    • 1.0
    • 1.2
    • 1.4
    • 1.6
    • 1.8
    • 2.0
    • 2.4
    • 2.6
    • 3.0
    • 1.0
    • 1.2
    • 1.4
    • 1.6
    • 1.8
    • 2.0
    • 2.4
    • 2.6
    • 3.0
    (16)
    Quick links
    1.01.21.41.61.82.02.42.63.0
    Power
    Min
    Max
    (16)
    Sold vehicles

    About Audi A4 cars on heycar

    What is the most popular colour for Audi A4 ?

    Black

    What is the most popular gearbox for Audi A4 ?

    Semi-automatic

    What is the most popular fuel type for Audi A4 ?

    Petrol

    What is the most popular engine for Audi A4 ?

    2.0

    What is the average mileage for Audi A4 ?

    22629

    How many Audi A4 cars are available for sale?

    240