What headlight bulb does an Audi A4 take in the UK?

For the A4 saloon version (2015), Auto Bulbs Direct lists dipped beam H7, main beam H7. Headlight bulbs changed between versions, so check the table for your registration year and headlight type.

Do all A4 versions use the same bulbs?

No. Auto Bulbs Direct lists 8 different sets for the A4 across registration years and headlight types (halogen, with or without daytime running lights, cornering lights). Match yours by registration year, and check the old bulb's base.

Audi A4 bulb numbers (UK)

For the A4 saloon version (2015, 15 plate), Auto Bulbs Direct lists dipped beam H7, main beam H7; front fog H11, front indicators 581 (PY21W), brake/tail 382 (P21W), reversing 955 (W16W), number plate 239 (C5W). Other versions are below - 8 in all.

Key takeaways

A4 saloon: dipped H7, main H7.
UK number and ECE code name the same bulb: 501 = W5W, 581 = PY21W, 380 = P21/5W, 382 = P21W.
Versions differ by registration year and headlight type - check the old bulb's base.

A4 saloon 2015 (15 plate)
Dipped beam	H7
Main beam	H7
Front fog	H11
Front indicator	581 (PY21W)
Brake / tail light	382 (P21W)
Rear indicator	581 (PY21W)
Rear fog	435 (H21W)
Reversing light	955 (W16W)
Number plate	239 (C5W)

A4 saloon 2014-2015 (64 plate)
Dipped beam	H7
Main beam	H7
Front fog	H11
Front indicator	581 (PY21W)
Brake / tail light	382 (P21W)
Rear indicator	581 (PY21W)
Rear fog	382 (P21W)
Reversing light	955 (W16W)
Number plate	239 (C5W)

A4 avant 2013-2015 (63 to 15 plates)
Dipped beam	H7
Main beam	H7
Front fog	H8
Sidelight	501 (W5W)
Front indicator	581 (PY21W)
Rear indicator	382 (P21W)
Rear fog	H21W
Reversing light	955 (W16W)
Number plate	239 (C5W)

A4 saloon 2013-2014 (63 to 14 plates)
Dipped beam	H7
Main beam	H7
Front fog	H11
Front indicator	581 (PY21W)
Brake / tail light	382 (P21W)
Rear indicator	382 (P21W)
Rear fog	382 (P21W)
Reversing light	955 (W16W)
Number plate	239 (C5W)

A4 avant 2012-2013 (62 to 13 plates)
Dipped beam	H7
Main beam	H7
Front fog	H8
Sidelight	501 (W5W)
Rear indicator	382 (P21W)
Rear fog	H21W
Reversing light	955 (W16W)
Number plate	239 (C5W)

A4 saloon 2007-2013 (57 to 13 plates)
Dipped beam	H7
Main beam	H7
Front fog	H11
Brake / tail light	382 (P21W)
Rear indicator	382 (P21W)
Rear fog	382 (P21W)
Reversing light	955 (W16W)
Number plate	239 (C5W)

A4 avant 2008-2012 (08 to 12 plates)
Dipped beam	H7
Main beam	H7
Front fog	H11
Sidelight	501 (W5W)
Rear indicator	382 (P21W)
Rear fog	H21W
Reversing light	955 (W16W)
Number plate	239 (C5W)

A4 avant 2007-2008 (57 plate)
Dipped beam	H7
Main beam	H7
Front fog	H11
Sidelight	501 (W5W)
Brake / tail light	382 (P21W)
Rear indicator	382 (P21W)
Rear fog	382 (P21W)
Reversing light	382 (P21W)
Number plate	239 (C5W)

Versions as Auto Bulbs Direct names them, with UK registration years and plates. These are halogen-headlight cars unless stated; xenon and LED headlights use different bulbs or sealed units.

Bulbs for the Audi A4

For the A4 saloon (2015). Amazon opens in your own country's store.

H7 headlight bulbDipped beam - A4 saloonShop bulbs 581 (PY21W) bulbFront indicators and rear indicatorsShop bulbs

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Same car: UK Audi A4 battery size and UK Audi A4 wiper sizes.

Have a US-market A4? US Audi A4 bulb sizes by year.

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Source: Auto Bulbs Direct's vehicle bulb finder, checked registration plate by registration plate. Bulbs can change with trim level and headlight type, so check the markings on the old bulb (printed on its base) before buying. UK numbers (501, 581, 380...) and ECE codes (W5W, PY21W, P21/5W...) name the same bulb.