4 Years Available
Audi Q3 Light Bulb Sizes
Complete bulb size reference for the Audi Q3 from 2015 to 2018. Find headlight, fog light, turn signal, and brake light bulb sizes for every model year.
The Audi q3 changed low beam specifications across model years — 2016–2018: D5S; 2015: D3S. Make sure to select your exact year below to get the right bulb size.
Year Range
2015 – 2018
4 model yearsBulb Sizes Across Years
| Position | Bulb Type(s) | Years | Status / Shop |
|---|---|---|---|
| Low Beam | D5S(2016–2018) D3S(2015–2015) | 4 years | Changed |
| High Beam | D5S(2016–2018) D3S(2015–2015) | 4 years | Changed |
| Fog Light | 921(2015–2018) | 4 years | Consistent |
| Turn Signal Front | 12181NA(2015–2018) | 4 years | Consistent |
| Map Light | 2825(2015–2018) | 4 years | Consistent |
| Reverse Light | 921(2015–2018) | 4 years | Consistent |
| Trunk Light | 2825(2015–2018) | 4 years | Consistent |
| Door Light | W5W(2015–2018) | 4 years | Consistent |
| Dome Light | W5W(2015–2015) | 1 years | Consistent |
Common Q3 Replacement Parts
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Frequently Asked Questions
We have bulb size data for the Audi Q3 from 2015 to 2018, covering 4 model years. Select your year below for a complete position-by-position bulb chart.
Yes, the Audi Q3 changed low beam bulb specifications across generations: 2016–2018: D5S; 2015–2015: D3S. Make sure to check your exact year using the list below.
The Audi Q3 uses a D5S bulb for the low beam (same bulb serves both high and low beam via dual filament), and a 921 for the fog lights. Select your year below for the exact fitment chart.
Yes. The Audi Q3 uses a D5S low beam, and direct-fit LED conversion kits for that size are widely available. LED upgrades typically produce 2–3× more light output than stock halogen and last 25,000+ hours. Look for a DOT-compliant kit with a proper beam cutoff pattern.
Select your model year from the list below. Each year page shows every bulb position — low beam, high beam, fog light, turn signal, and brake light — with the correct size and a link to buy it on Amazon.