Audi A5 2021 Bulb Size
Bulb size chart
This page covers bulb fitment for the 2021 Audi A5 and is organized by lighting position so you can quickly verify the correct bulb size before you buy. Because the A5 can use different lighting setups depending on trim, market, and body style, checking the bulb location is the safest way to match the right replacement.
Use the chart on this page to compare common interior, exterior, and engine bay bulbs for the 2021 Audi A5. It is especially helpful when you are replacing a single bulb and want to confirm whether the part belongs in the glove box, door area, headlight, fog light, or another specific location.
Fitment can vary on the 2021 Audi A5 depending on the trim level, lighting package, and whether the car uses halogen or LED equipment in a given position. That matters most for headlight and fog light applications, where factory LED systems and aftermarket conversions may change the bulb style or make the housing non-serviceable in the usual way. Before ordering, check the bulb currently installed in the vehicle and compare it with the chart, since the same model year can use different bulbs by market and body style. If a previous owner converted the lighting setup, the installed bulb may not match the original factory specification.
FAQ
What bulb size does the 2021 Audi A5 use for the glove box light?
The glove box light bulb listed for the 2021 Audi A5 is 194.
What bulb size does the 2021 Audi A5 use for the interior door light?
The interior door light bulb listed for the 2021 Audi A5 is 194.
What bulb size is used for the front fog light on the 2021 Audi A5?
The front fog light bulb listed for the 2021 Audi A5 is H8 LED.
What bulb sizes are listed for the high beam on the 2021 Audi A5?
The high beam bulb options listed for the 2021 Audi A5 are H16 LED and H8 LED.
What bulb sizes are listed for the low beam on the 2021 Audi A5?
The low beam bulb options listed for the 2021 Audi A5 are H16 LED and H8 LED.
What bulb size is listed for the cornering light on the 2021 Audi A5?
The cornering light bulb listed for the 2021 Audi A5 is H11.
What bulb size is used for the engine compartment light on the 2021 Audi A5?
The engine compartment light bulb listed for the 2021 Audi A5 is 578.
Why does the 2021 Audi A5 page show more than one bulb option for some headlights?
Audi used different lighting configurations on the 2021 A5 depending on trim, package, and market. That is why the chart may list more than one bulb option for the same position.
How do I know which bulb size to buy for my 2021 Audi A5?
Start by matching the bulb to the exact lighting position on the chart, then compare it with the bulb currently installed in the car. This is the best way to avoid ordering the wrong part when the vehicle has different equipment by trim or market.
Can I use a different bulb type if my 2021 Audi A5 has LED lighting?
Not always. Some LED-equipped lighting systems use a different bulb style, while others may be integrated and not meant for simple bulb replacement. Always verify the installed bulb and the housing design before buying.
Do trim levels affect bulb fitment on the 2021 Audi A5?
Yes. Trim level, lighting package, and body style can all affect bulb fitment on the 2021 Audi A5, especially for exterior lighting positions.
Should I check the old bulb before ordering a replacement for my 2021 Audi A5?
Yes. Checking the installed bulb before purchase is strongly recommended, especially if the car has been modified or if you are unsure whether the lighting setup is factory original.