What is the low beam headlight bulb size for a 1999 Audi A6?

The 1999 Audi A6 uses a HID-D2S LED bulb for the low beam headlights. We recommend upgrading to LED for better visibility.

What is the high beam headlight bulb size for a 1999 Audi A6?

The high beam bulb size for the 1999 Audi A6 is H7 LED.

Why are my 1999 Audi A6 headlights dim?

Dim headlights on a 1999 Audi A6 can be caused by aging halogen bulbs, which lose brightness over time, or oxidation (cloudiness) on the plastic headlight lenses. Upgrading to a HID-D2S LED LED conversion kit can provide a significantly brighter and whiter light output.

Which bulb fits the 1999 Audi A6 fog light?

The 1999 Audi A6 uses a H3 LED bulb for the fog light position.

Is the 1999 Audi A6 single or dual beam?

The 1999 Audi A6 uses a dual bulb headlight system. This means you have separate bulbs for high and low beams.

Can I install LED bulbs on my 1999 Audi A6?

Yes, the 1999 Audi A6 comes with standard halogen bulbs from the factory, but they can be upgraded to LED. You will need a HID-D2S LED LED conversion kit for the low beams.

Does the 1999 Audi A6 have fog lights?

Yes, the 1999 Audi A6 takes a H3 LED bulb for the fog light position.

Did the 1999 Audi A6 change headlight bulb sizes from the previous year?

Yes — the 1999 Audi A6 uses different bulb sizes than the 1998 model. The 1999 generation introduced this bulb configuration.

Is the 1999 Audi A6 the first or last year to use HID-D2S LED bulbs?

The 1999 Audi A6 is the only year in the 1999 generation to use the HID-D2S LED bulb for the low beam headlight.

How do I change the headlight on a 1999 Audi A6?

Turn off the vehicle and open the hood. Locate the headlight assembly from behind, remove the dust cover or retaining clip, disconnect the wiring harness, twist the old HID-D2S LED bulb counter-clockwise to remove it, then insert the new bulb and reassemble. Note: Audi vehicles use a CANbus system, so LED replacements may need an anti-flicker decoder. The whole process typically takes 10 to 30 minutes per side depending on accessibility.

Are LED headlights legal for a 1999 Audi A6?

LED bulbs used off-road or in auxiliary lights are legal everywhere. For on-road headlight use, legality varies by state. Many states allow LED retrofits as long as the beam pattern meets DOT standards. For the best legal compliance, choose a DOT-approved HID-D2S LED LED kit that is designed as a direct replacement and produces a proper cutoff pattern without excessive glare.

How much does it cost to replace 1999 Audi A6 headlights?

A pair of HID HID-D2S LED bulbs costs $50 to $150. If you have a shop do the work, expect an additional $20 to $50 in labor per bulb. Replacing them yourself at home saves the labor cost and usually takes under 30 minutes.

What is the difference between halogen and LED for a 1999 Audi A6?

Halogen bulbs produce a warm yellow light (around 3200K), last 500 to 1000 hours, and draw more power. LED bulbs emit a brighter white light (5000-6000K), last 25,000+ hours, and use less energy. LED upgrades for the HID-D2S LED position are available as direct plug-and-play replacements. Since the Audi uses CANbus monitoring, choose a CANbus-compatible LED kit to avoid dashboard errors.

The 1999 Audi A6 has a unique bulb configuration not shared with adjacent model years.

Fitment Guaranteed for 1999 Audi A6

What Size Bulbs Does a 1999 Audi A6 Use?

Correct headlight, fog light, and tail light bulb sizes. Sourced from OEM catalog data.

Installation Difficulty

Hard (Tight clearances)

Est. Replacement Cost

$50 - $150 (HID System)

What Lighting System Does the 1999 Audi A6 Have?

The 1999 Audi A6 utilizes a refined lighting configuration featuring 15 distinct bulb positions. It features an extensive lighting system powered by premium factory HID/Xenon technology utilizing D2S projector housings for high-intensity output. This model belongs to the early years of the A6's 1995-2018 production span. Note that Audi vehicles typically feature a CANbus electrical monitor that checks for specific bulb resistance.

LED Flicker Warning

This vehicle is known to use a CANbus system. Installing standard LEDs may cause flickering.

Use a CANbus decoder.

Can You Put LED Bulbs in a 1999 Audi A6?

The 1999 Audi A6 is already equipped with factory D2S HID/Xenon headlights. Since HID technology already provides exceptional brightness, we recommend staying with high-quality OEM replacement bulbs rather than attempting an LED retrofit for the primary headlights. However, the H3 LED fog lights are typically halogen and are excellent candidates for an LED upgrade to match the color temperature of your HID headlights.

1999 Audi A6 Bulb Size Chart

Position	Bulb Size	Shop
Low Beam	HID-D2S LED	Buy HID-D2S LED →
High Beam	H7 LED	Buy H7 LED →
Fog Light	H3 LED	Buy H3 LED →
Brake Light	2723	Buy 2723 →
Dome Light	6411	Buy 6411 →
Turn Signal Front	2827	Buy 2827 →
Side Marker	7528	Buy 7528 →
License Plate	6418	Buy 6418 →
Map Light	47830	Buy 47830 →
Parking Light	2357NA	Buy 2357NA →
Turn Signal Rear	7506	Buy 7506 →
Reverse Light	7506	Buy 7506 →
Trunk Light	6418	Buy 6418 →
Tail Light	7528	Buy 7528 →
Door Light	W5W	Buy W5W →

How do the 1999 Audi A6's bulbs compare to other years?

The 1999 Audi A6 changed bulb sizes from 1998. The previous model year used a different configuration.

The 2000 model switched to a different bulb configuration.

This bulb configuration covers the 1999 model years. ← 1998 2000 →

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Other A6 Years

2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 2004 2003 2002 2001 2000 1998 1997 1996 1995

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