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BMW 420 approved used cars for sale

We have 75 BMW 420 cars in stock which have been inspected by the dealers to ensure they meet BMW's standards. Each car comes with 12 months free breakdown cover (or a discounted upgrade if you're an AA member) and £75 off your next service & MOT.

Image of a BMW 420 car

Approved used BMW 420 in stock

  • BMW 420 2.0 420i M Sport Hatchback 5dr Petrol Auto Euro 6 (s/s) (184 ps)
    £11,890
    BMW 4 Series Gran Coupe 2.0 420i M Sport Hatchback 5dr Petrol Auto Euro 6 (s/s) (184 ps)
    • 2017
    • •
    • 89,650 miles
    • •
    • Petrol
    • •
    • Automatic
    Automatic Motors Ltd

    Icon - location pin West Drayton

  • BMW 420 2.0 420d M Sport Hatchback 5dr Diesel Auto Euro 6 (s/s) (190 ps)
    £12,990
    BMW 4 Series Gran Coupe 2.0 420d M Sport Hatchback 5dr Diesel Auto Euro 6 (s/s) (190 ps)
    • 2017
    • •
    • 71,700 miles
    • •
    • Diesel
    • •
    • Automatic
    Automatic Motors Ltd

    Icon - location pin West Drayton

  • Star icon This vehicle has passed an AA inspection

    AA finance available

    BMW 420 2.0 420d M Sport Coupe 2dr Diesel Auto Euro 6 (s/s) (190 ps)
    £10,500
    BMW 4 Series 2.0 420d M Sport Coupe 2dr Diesel Auto Euro 6 (s/s) (190 ps)
    • 2017
    • •
    • 105,000 miles
    • •
    • Diesel
    • •
    • Automatic
    Imperial Autotrade

    Icon - location pin Ruislip

  • BMW 420 420i M Sport 5dr Step Auto
    £25,890
    BMW 4 Series Gran Coupe 420i M Sport 5dr Step Auto
    • 2022
    • •
    • 28,185 miles
    • •
    • Petrol
    • •
    • Semiauto
    Marshall Audi Maidstone

    Icon - location pin Maidstone

  • AA finance available

    BMW 420 2.0 420i M Sport Auto Euro 6 (s/s) 2dr
    £22,400
    BMW 4 Series 2.0 420i M Sport Auto Euro 6 (s/s) 2dr
    • 2022
    • •
    • 53,812 miles
    • •
    • Petrol
    • •
    • Automatic
    Quality Part X Ltd Dunstable

    Icon - location pin Dunstable

  • Star icon This vehicle has passed an AA inspection
    BMW 420 2.0 420d Sport Coupe 2dr Diesel Auto Euro 6 (s/s) (190 ps)
    £11,850
    BMW 4 SERIES 2.0 420d Sport Coupe 2dr Diesel Auto Euro 6 (s/s) (190 ps)
    • 2015
    • •
    • 53,300 miles
    • •
    • Diesel
    • •
    • Automatic
    Kallenhard Performance Cars

    Icon - location pin Leighton Buzzard

  • BMW 420 420i M Sport 5dr Auto [Professional Media]
    £15,995
    BMW 4 Series Gran Coupe 420i M Sport 5dr Auto [Professional Media]
    • 2018
    • •
    • 47,140 miles
    • •
    • Petrol
    • •
    • Semiauto
    Marshall BMW Hampshire

    Icon - location pin Hook

  • BMW 420 420i M Sport 5dr Step Auto
    £37,895
    BMW 4 Series Gran Coupe 420i M Sport 5dr Step Auto
    • 2025
    • •
    • 3,991 miles
    • •
    • Petrol
    • •
    • Semiauto
    Marshall BMW Hampshire

    Icon - location pin Hook

  • Star icon This vehicle has passed an AA inspection
    BMW 420 420d M Sport
    £17,390
    BMW 4 Series 420d M Sport
    • 2018
    • •
    • 24,960 miles
    • •
    • Diesel
    • •
    • Automatic
    Manamanx

    Icon - location pin Reading

  • BMW 420 420i M Sport
    £27,290
    BMW 4 Series Gran Coupe 420i M Sport
    • 2023
    • •
    • 18,669 miles
    • •
    • Petrol
    • •
    • Automatic
    Manamanx

    Icon - location pin Reading

  • BMW 420 420i M Sport 2dr Step Auto
    £29,999
    BMW 4 Series 420i M Sport 2dr Step Auto
    • 2023
    • •
    • 7,125 miles
    • •
    • Petrol
    • •
    • Semiauto
    Marshall Ford of Cambridge

    Icon - location pin Cambridge

  • BMW 420 420i M Sport 5dr Step Auto
    £28,990
    BMW 4 Series Gran Coupe 420i M Sport 5dr Step Auto
    • 2023
    • •
    • 19,126 miles
    • •
    • Petrol
    • •
    • Semiauto
    Marshall Audi of Newbury

    Icon - location pin Newbury

  • BMW 420 420i M Sport 5dr Auto [Professional Media]
    £16,590
    BMW 4 Series Gran Coupe 420i M Sport 5dr Auto [Professional Media]
    • 2019
    • •
    • 49,976 miles
    • •
    • Petrol
    • •
    • Semiauto
    Marshall SKODA Oxford

    Icon - location pin Kidlington

  • BMW 420 420i M Sport 2dr Step Auto
    £30,895
    BMW 4 Series Convertible 420i M Sport 2dr Step Auto
    • 2023
    • •
    • 30,358 miles
    • •
    • Petrol
    • •
    • Semiauto
    Marshall BMW Salisbury

    Icon - location pin Salisbury

  • BMW 420 420i M Sport 2dr Step Auto
    £36,295
    BMW 4 Series 420i M Sport 2dr Step Auto
    • 2025
    • •
    • 5,037 miles
    • •
    • Petrol
    • •
    • Semiauto
    Marshall BMW Salisbury

    Icon - location pin Salisbury

Icon - car with tick symbol

Want extra reassurance before buying?

Consider a pre-purchase vehicle inspection. An independent AA mechanic will check for any issues, helping you avoid costly surprises.

Book a vehicle inspection
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Selling made easy with a free instant valuation

Enter your reg number below to get a valuation estimate from our trusted partner Motorway.

Please note: If you tap 'Get a valuation' you will be taken directly to the Motorway website.

Why buy through The AA

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Trusted dealers only

All dealers have committed to AA Cars Standards to give you peace of mind.

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All vehicles checked

Vehicle history, MOT, mileage, accident and police reports are all checked - on every vehicle.

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Exclusive AA offers

12 months free breakdown cover (or discounted upgrade if you're an AA member) and £75 off a Service & MOT. T&Cs apply.

  • Other approved used BMW cars by model
    • BMW 1 Series
    • BMW 116
    • BMW 118
    • BMW 120
    • BMW 123
    • BMW 125
    • BMW 135
    • BMW 2 Series
    • BMW 216
    • BMW 218
    • BMW 220
    • BMW 225
    • BMW 3 Series
    • BMW 318
    • BMW 320
    • BMW 325
    • BMW 328
    • BMW 330
    • BMW 335
    • BMW 4 Series
    • BMW 428
    • BMW 430
    • BMW 435
    • BMW 440
    • BMW 5 Series
    • BMW 520
    • BMW 523
    • BMW 530
    • BMW 535
    • BMW 540
    • BMW 545
    • BMW 550
    • BMW 6 Series
    • BMW 630
    • BMW 640
    • BMW 7 Series
    • BMW 730
    • BMW 740
    • BMW 750
    • BMW 8 Series
    • BMW 840
    • BMW 850
    • BMW i Series
    • BMW i3
    • BMW i4
    • BMW i5
    • BMW iX
    • BMW M Series
    • BMW M2
    • BMW M235
    • BMW M3
    • BMW M4
    • BMW M5
    • BMW M6
    • BMW M8
    • BMW X Series
    • BMW X1
    • BMW X2
    • BMW X3
    • BMW X4
    • BMW X5
    • BMW X6
    • BMW X7
    • BMW Z Series
    • BMW Z4

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