Body Style: cabriolet; Model: Quattro; Lighting: halogen

2006 Audi A4 Headlight Bulbs & Lighting Guide

Choose the factory headlight system below to see the correct bulb and recommendation path for this 2006 Audi A4.

Low beam
H7
High beam
Factory halogen system
Factory setup
Body Style: cabriolet; Model: Quattro; Lighting: halogen

Choose the factory system installed in this vehicle. Bulb sizes and recommendations change with that selection.

2006 Audi A4 representative vehicle image

Best headlight upgrades

These products were physically tested by BulbFacts, but the tests were not performed in this exact vehicle unless a card explicitly says otherwise.

Body Style: cabriolet; Model: Quattro; Lighting: halogen

Low Beam: H7

OSRAM Night Breaker 200 manufacturer product image
Best direct replacement

OSRAM Night Breaker 200

Low Beam H7

Estimated price$20-34
BulbFacts testedCorrect bulb size
Best Standard Reflector Upgrade

The Night Breaker 200 is the top standard-wattage reflector recommendation at the time of review. Anything scoring higher in the reflector chart uses much higher wattage, while the NB200 keeps the simple drop-in halogen format.

Measured vs stock halogenReflector test
Low beam+44% light
Stock 373 lux · Upgrade 536 lux
Color3,550K 125K cooler
Stock 3,425K · Upgrade 3,550K · 5000K pure white
General BulbFacts housing test
Read BulbFacts reviewCompare test resultsBuy at eBay
Morimoto 2Stroke 4.0 manufacturer product image
Best reflector LED upgrade

Morimoto 2Stroke 4.0

Low Beam H7

Estimated price$178
BulbFacts testedCorrect bulb sizereflector housing only
Safest Glare + DRL Pick

The glare-control recommendation for reflector housings, and also the easiest pick when your vehicle needs an LED that can properly dim for DRL use.

Measured vs stock halogenReflector test
Low beam+138% light
Stock 373 lux · Upgrade 889 lux
Color5,250K 1,825K cooler
Stock 3,425K · Upgrade 5,250K · 5000K pure white
General BulbFacts reflector test
Read BulbFacts reviewCompare test resultsBuy at BRI Source
Morimoto XB Elite 2.0 manufacturer product image
Best projector HID upgrade

Morimoto XB Elite 2.0

Low Beam H7

Estimated price$311
BulbFacts testedCorrect bulb sizeprojector housing only
Best Premium Distance

The Morimoto XB Elite remains the premium performance benchmark from the current HID recommendations. It tested as one of the strongest 35W projector-focused HID kits and is the better fit when you want a complete, higher-quality conversion kit instead of a generic marketplace option.

Measured vs stock halogenProjector test
Low beam+95% light
Stock 284 lux · Upgrade 554 lux
Color5,000K 1,575K cooler
Stock 3,425K · Upgrade 5,000K · 5000K pure white
General BulbFacts projector test
Read BulbFacts reviewCompare test resultsBuy at BRI Source

A matching bulb size identifies fitment; it does not by itself prove optical compatibility or make a conversion a vehicle-specific recommendation. Use the LED upgrade path only with a reflector housing and confirm beam pattern and glare after installation. Use the HID upgrade path only with a projector housing; it is not a reflector-housing recommendation.

Other bulbs

Available exterior and interior lighting data for this model year.

Cargo / Trunk Light
T10Possible fitment — verify installed bulb
Dome Light
6418Possible fitment — verify installed bulb
Daytime Running Light
1156Possible fitment — verify installed bulb
Fog Light
H11Possible fitment — verify installed bulb
Front Side Marker
3157Possible fitment — verify installed bulb
Front Turn Signal
3157Possible fitment — verify installed bulb
Glove Box Light
T10Possible fitment — verify installed bulb
License Plate Light
6418Possible fitment — verify installed bulb
Parking Light
3157Possible fitment — verify installed bulb
Reverse Light
1156Possible fitment — verify installed bulb
Stepwell Light
T10Possible fitment — verify installed bulb
Tail Light
1157Possible fitment — verify installed bulb
Technical details and sources

Fitment, factory-system research, and BulbFacts product tests remain separate evidence. A matching bulb size does not by itself make a conversion a vehicle-specific recommendation.

PositionBulb or systemEvidence status
Low BeamBody Style: cabriolet; Model: Quattro; Lighting: halogenH7Likely fitment
Low BeamBody Style: cabriolet; Model: Quattro; Lighting: HIDD2SLikely fitment
Low BeamTrim: Base; Model: Quattro; Lighting: halogenH7Likely fitment
Low BeamTrim: Base; Model: Quattro; Lighting: HIDD1SLikely fitment
High BeamTrim: Base; Model: QuattroH7Likely fitment
High BeamTrim: BaseH7Likely fitment

Each model year opens its own BulbFacts record. Bulb sizes and factory systems are not carried over from adjacent years.

Fitment note: Verify the installed bulb, connector, housing, and factory system before ordering. A bulb-size match is not automatically a conversion recommendation or proof of vehicle-specific testing.