Audi A4 2014 Bulb Size
Bulb size chart
This 2014 Audi A4 bulb size guide is designed to help you quickly verify the correct bulb type by lighting position, so you can replace the right lamp without guesswork. Whether you are changing exterior lights, interior bulbs, or cargo-area lighting, this page organizes the fitment information by location for easier shopping and installation.
The 2014 Audi A4 can use different bulb setups depending on trim, lighting package, body style, and headlight type. That means the bulb for one position may differ between halogen and HID-equipped cars, so it is important to match the bulb to the exact light location on your vehicle before ordering.
For the best fitment results, compare the bulb chart with your actual vehicle and confirm whether your A4 has halogen headlights or HID headlights, since several rear-light and brake-light applications differ between those setups. If you are converting to aftermarket LED bulbs, make sure the replacement is compatible with the vehicle’s electrical system and consider whether resistors or error-canceling features may be needed to avoid warning messages or hyperflash. Trim and lighting package differences can also change the bulb used in certain positions, so checking the installed bulb before purchase is the safest way to avoid returns and get the correct replacement the first time.
FAQ
Does the 2014 Audi A4 use the same bulb sizes on every trim?
Not always. Trim level, lighting package, body style, and market can change the bulb used in some positions, especially exterior rear lighting and headlight-related bulbs.
What headlight bulb does a 2014 Audi A4 use?
For the listed setup, the high beam and low beam headlight bulb is D3S. Always confirm your headlight type before buying, since halogen and HID-equipped cars use different bulbs.
What bulb is used for the backup reverse light on a 2014 Audi A4?
The backup reverse light bulb is 921 on the listed fitment chart.
Which bulb fits the front turn signal on a 2014 Audi A4?
The front turn signal light bulb is 64132 for the listed configuration.
What are the rear turn signal and brake light bulb sizes on halogen headlight models?
For 2014 Audi A4 models with halogen headlights, the rear turn signal bulb is 7506, and the brake light bulb is 7506R.
What are the rear brake and tail bulb sizes on HID headlight models?
For 2014 Audi A4 models with HID headlights, the brake light and tail light bulb entries are listed separately by position on the chart. Check the exact lighting position on your car before ordering, since the fitment differs from halogen-equipped models.
Are the license plate lights LED on the 2014 Audi A4?
Yes, the license plate light bulb is listed as LED for this model year.
What bulb is used for the dome light in a 2014 Audi A4?
The dome light bulb is listed as 6411 or 6428, depending on the exact interior lamp setup.
What bulbs fit the map lights and glove box light?
The map light bulb, glove box light bulb, trunk or cargo area light, and interior door light are listed as 2825 or 98 on the chart.
What bulb does the vanity mirror light use?
The vanity mirror light bulb is 6418 for the listed 2014 Audi A4 fitment.
Can I swap the 2014 Audi A4 bulbs to LED aftermarket bulbs?
Yes, many positions can be converted to LED aftermarket bulbs, but fitment and compatibility matter. Make sure the replacement matches the socket and works properly with the car’s electrical system.
Should I check the installed bulb before buying a replacement?
Yes. Checking the installed bulb is the best way to confirm fitment, especially on a 2014 Audi A4 with different trim or lighting package combinations. It helps prevent ordering the wrong bulb size.