6 Electrical bulb & socket parts are listed for the 2021 Audi Q3, in 4 part types, covering both the 1.4L L4 Turbocharged and the 2.0L L4 Turbocharged. Each one has a brand, a manufacturer part number and notes that say where it fits.
The bulb and socket system on the 2021 Audi Q3 covers every bulb and socket on the vehicle, from headlamps to instrument-cluster illumination. The largest groups are Turn Signal Lamp Bulb (3 parts), Brake Light Bulb (1 part) and Fog / Driving Lamp Bulb (1 part). The other 1 part type covers the remaining 1 part.
The 2021 Audi Q3 was sold with both the 1.4L L4 Turbocharged and the 2.0L L4 Turbocharged. All 6 parts on this page fit every engine.
2 brands supply electrical bulb & socket parts for the 2021 Audi Q3, led by PHILIPS (5 parts) and SYLVANIA (1 part). Quality grades include Extended Life and Standard Replacement.
Each part number listed for the 2021 Audi Q3 opens a page with every vehicle that part fits.
Brake Light Bulb
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PHILIPS Fits: all 2021 Q3 engines | 1156RLED | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | VisionLED | View on Amazon |
This table covers the bulbs in the stop lamps. Typical signs include a dark lamp, flicker, or a bulb that keeps failing in one socket. If the same position keeps failing, replace the socket or repair the ground rather than chasing bulbs.
This group shows a single part: PHILIPS 1156RLED.
Fog / Driving Lamp Bulb
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PHILIPS Fits: all 2021 Q3 engines | H21W | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Rear | View on Amazon |
This table covers the bulbs in the fog and driving lamps. Typical signs include a dark lamp, flicker, or a bulb that keeps failing in one socket. If the same position keeps failing, replace the socket or repair the ground rather than chasing bulbs.
One part is listed for the 2021 Audi Q3 — PHILIPS H21W.
Tail Lamp Bulb
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PHILIPS Fits: all 2021 Q3 engines | 1156RLED | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | VisionLED | View on Amazon |
This table covers the bulbs in the tail lamps. Typical signs include a dark lamp, flicker, or a bulb that keeps failing in one socket. If the same position keeps failing, replace the socket or repair the ground rather than chasing bulbs.
One part is listed for the 2021 Audi Q3 — PHILIPS 1156RLED.
Turn Signal Lamp Bulb
Extended Life
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PHILIPS Fits: all 2021 Q3 engines | PY21WLL | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Longer LifeNatural Amber | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PHILIPS Fits: all 2021 Q3 engines | 12174NA | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Natural Amber | View on Amazon |
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Fits: all 2021 Q3 engines | PWY24W | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Frontwithout LED Turn Signal | View on Amazon |
This table covers the bulbs in the turn-signal lamps. Typical signs include a dark lamp, flicker, or a bulb that keeps failing in one socket. If the same position keeps failing, replace the socket or repair the ground rather than chasing bulbs.
3 Turn Signal Lamp Bulb parts for the 2021 Audi Q3 come from 2 brands — PHILIPS and SYLVANIA. Every part fits both the 1.4L L4 Turbocharged and the 2.0L L4 Turbocharged.
In the Extended Life grade, PHILIPS supplies 1 part: grouped under the catalog's "Extended Life" designation — the notes column spells out what sets them apart. A representative part number is PHILIPS PY21WLL.
In the Standard Replacement grade, PHILIPS supplies 1 part: built to original-equipment specification. A representative part number is PHILIPS 12174NA.
1 further part sits outside the graded sections, with the same engine-level match.
Part numbers include PHILIPS PY21WLL, PHILIPS 12174NA and SYLVANIA PWY24W.
Buying Electrical Bulb & Socket Parts for a 2021 Audi Q3
On this vehicle, the bulb and socket system covers every bulb and socket on the vehicle, from headlamps to instrument-cluster illumination.
- You do not need to pick an engine: every electrical bulb & socket part on this page fits both the 1.4L L4 Turbocharged and the 2.0L L4 Turbocharged.
- Read the notes on each row for position, trim and spec qualifiers before you order.
- Where labor overlaps, replace bulbs in pairs so both sides age together, and put a smear of dielectric grease on the new socket contacts.
- Cross-reference the manufacturer part number against your old part or a service-manual listing.
Start with the largest groups on this page: Turn Signal Lamp Bulb and Brake Light Bulb .
Frequently Asked Questions
How many electrical bulb & socket parts fit the 2021 Audi Q3?
Our catalog currently lists 6 electrical bulb & socket parts for the 2021 Audi Q3 across 4 subcategories and 2 brands, covering both the 1.4L L4 Turbocharged and the 2.0L L4 Turbocharged. Each part is matched to the engine(s) it fits.
Do electrical bulb & socket parts differ between 2021 Audi Q3 engines?
No. On this page every electrical bulb & socket part fits both the 1.4L L4 Turbocharged and the 2.0L L4 Turbocharged. You do not need to pick an engine to choose the right row — use the notes for position and trim.
What are the signs of electrical bulb & socket problems on a 2021 Audi Q3?
Common symptoms include a lamp that flickers over bumps, melted or discolored socket plastic, or bulbs that keep failing early on one side. If you notice any of these, identify the affected subcategory above and cross-reference the part numbers listed.
What should I replace at the same time?
Where labor overlaps, replace bulbs in pairs so both sides age together, and put a smear of dielectric grease on the new socket contacts.
What do the market flags (US, CA, MX) on each part mean?
They show the market for which the manufacturer published application data for that part — where the vehicle was first sold, not where the part was made. If your 2021 Audi Q3 was originally sold in the US, the safest choice is a part marked for the US market.
How do I make sure a part fits my 2021 Audi Q3?
Every part on this page already fits both the 1.4L L4 Turbocharged and the 2.0L L4 Turbocharged. Then repeated bulb failure in one position usually means a socket or ground problem, not bad bulbs — replace the socket rather than chase it. The notes column carries position and trim qualifiers where they apply.
Other Parts for the 2021 Audi Q3
Electrical Bulb & Socket Parts for Other Audi Q3 Years
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Manufacturer names, model designations and part numbers are used for identification and fitment reference only. AutoFactsDB is an independent catalog and is not affiliated with, endorsed by, or sponsored by any vehicle manufacturer displayed on this page.