Audi TT 2017 Bulb Size
Bulb size chart
The 2017 Audi TT uses a mix of LED exterior lighting and a few small incandescent interior bulbs, so the correct replacement can depend on the exact light position. This page is designed to help you verify bulb sizes by lighting location, making it easier to match the right bulb for the headlight, tail light, brake light, turn signal, and interior lamps on your TT.
Because trim and lighting equipment can vary by market and body style, it is important to confirm the bulb type for each position before ordering. On this 2017 Audi TT page, you can check the listed bulb size by function and compare it with the light you need to replace, whether you are working on exterior visibility lights or cabin convenience lighting.
For the best fitment results, always compare the bulb listing with your vehicle’s trim and lighting package, since some 2017 Audi TT models may differ by region or equipment level. Many exterior positions on this car are LED, while some interior and cargo-area locations use 2825 bulbs, so do not assume every light shares the same design. If your TT has been modified with aftermarket LED conversions, the installed bulb may not match the original factory specification, and a previous owner may have changed sockets, resistors, or housings. Before buying replacements, remove the existing bulb and check the markings on the base whenever possible, especially if you are unsure whether the car has factory LED lighting or a retrofit setup.
FAQ
What bulb size does the 2017 Audi TT use for the low beam headlight?
On this page, the 2017 Audi TT low beam headlight is listed as LED. Because the exact factory setup can vary by market and trim, confirm the installed lighting before ordering a replacement.
What bulb size does the 2017 Audi TT use for the high beam headlight?
The 2017 Audi TT high beam headlight is listed as LED. This page groups the bulb by lighting position so you can verify the correct fitment for the front headlamp assembly.
Are the fog lights on the 2017 Audi TT LED?
Yes, the front fog light bulb is listed as LED for the 2017 Audi TT. If your car has a different lighting package or an aftermarket conversion, check the actual installed unit before purchase.
What bulb is used for the license plate lights on a 2017 Audi TT?
The license plate light bulb is listed as LED on the 2017 Audi TT. This is a good example of why checking by position matters, since the exterior lighting layout is not all the same.
What is the brake light bulb type for the 2017 Audi TT?
The brake light bulb is listed as LED. If you are replacing a rear lighting assembly, verify whether you need a bulb replacement or a complete LED module depending on the exact lamp design.
What bulb size is used for the turn signals on the 2017 Audi TT?
Both front and rear turn signal light bulbs are listed as LED on this page. Always match the bulb location, because front and rear signal units may not use the same housing or service method.
What bulb type is used for the daytime running lights on the 2017 Audi TT?
The daytime running light bulb is listed as LED. Since DRL equipment can differ by market, it is smart to compare the bulb position with your vehicle’s original lighting setup.
What bulb is used for the reverse lights on the 2017 Audi TT?
The back up reverse light bulb is listed as LED. If the reverse light is not working, check the bulb, socket, and any related wiring or module before replacing parts.
Which interior bulbs on the 2017 Audi TT use 2825 bulbs?
The glove box light, trunk or cargo area light, and interior door light bulb are listed as 2825. These are the main non-LED bulb positions shown on this page for the 2017 Audi TT.
Does the 2017 Audi TT use LED bulbs for the dome and map lights?
Yes, the dome light bulb and map light bulb are listed as LED. That means the cabin lighting may be different from the small 2825 bulbs used in other interior locations.
Can trim level or body style change the bulb size on a 2017 Audi TT?
Yes. Trim and lighting package can vary by market and body style, so the exact bulb fitment may differ. Always use the bulb position on this page as a guide and verify the installed bulb when possible.
Should I check the old bulb before ordering a replacement for my 2017 Audi TT?
Yes. Checking the installed bulb is one of the safest ways to confirm fitment, especially if your TT has been modified or if you are dealing with a lighting package that differs from the factory listing.