63 Electrical bulb & socket parts are listed for the 2020 Audi A3, in 15 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 2020 Audi A3 covers every bulb and socket on the vehicle, from headlamps to instrument-cluster illumination. The largest groups are Door Panel Light Bulb (7 parts), Fog / Driving Lamp Bulb (7 parts) and Tail Lamp Bulb (7 parts). The other 12 part types cover the remaining 42 parts.
The 2020 Audi A3 was sold with both the 1.4L L4 Turbocharged and the 2.0L L4 Turbocharged. 51 parts fit every engine; the other 12 are engine-specific. Each part shows which engine(s) it fits.
The most listed brands for 2020 Audi A3 electrical bulb & socket parts are SYLVANIA (31 parts), HELLA (17 parts) and PHILIPS (7 parts), plus 4 more brands. Quality grades include Standard Replacement, Extended Life and LED.
9 parts on this 2020 Audi A3 page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including SYLVANIA 2825LL (Door Panel Light Bulb) and HELLA H21W (Fog / Driving Lamp Bulb). Click any part number to see every vehicle that part fits.
Back Up / Reverse Lamp Bulb
Extended Life
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Fits: all 2020 A3 engines | 64132LL | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Long Life | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA Fits: all 2020 A3 engines | H6W | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | HalogenSocket Type Bulb: BAX9S | View on Amazon |
| PHILIPS Fits: all 2020 A3 engines | H6W | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Fits A3 Base Modelor A3 QuattroFor reversing light | View on Amazon |
| SYLVANIA Fits: all 2020 A3 engines | 64132 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | with HID Headlights | View on Amazon |
This table covers the bulbs in the reverse 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.
4 Back Up / Reverse Lamp Bulb parts are listed for the 2020 Audi A3, from SYLVANIA, HELLA and PHILIPS. All of them fit every engine offered in the 2020 A3.
The Extended Life section lists 1 option from SYLVANIA — grouped under the catalog's "Extended Life" designation — the notes column spells out what sets them apart. SYLVANIA 64132LL is listed in this group.
The Standard Replacement section lists 3 options from HELLA, PHILIPS and SYLVANIA — built to original-equipment specification. HELLA H6W is listed in this group.
This group includes SYLVANIA 64132LL and HELLA H6W and the remaining parts above.
Brake Light Bulb
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PHILIPS Fits: all 2020 A3 engines | 7440RLED | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Ultinon LEDRed | 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.
One part is listed for the 2020 Audi A3 — PHILIPS 7440RLED.
Cornering Lamp Bulb
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Fits: all 2020 A3 engines | H8 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Base Type: PGJ19-1Wattage: 35.00 W | View on Amazon |
| SYLVANIA Fits: all 2020 A3 engines | H8FV | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Fog Vision | View on Amazon |
| SYLVANIA Fits: all 2020 A3 engines | H8SZ | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Silver Star zXeBlue | View on Amazon |
This table covers the replacement bulbs for the Cornering Lamp. 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.
SYLVANIA supplies the 3 Cornering Lamp Bulb parts for the 2020 Audi A3. All of them fit every engine offered in the 2020 A3.
Part numbers include SYLVANIA H8, SYLVANIA H8FV and SYLVANIA H8SZ.
Dome Light Bulb
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA Fits: all 2020 A3 engines | 2825 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | IncandescentSocket Type Bulb: W2.1x9.5d | View on Amazon |
| PEAK Fits: 2.0L L4 Turbocharged | 2825 | 🇺🇸 US 🇨🇦 CA | Average Rated Life: 750.0 HR | View on Amazon |
This table covers the bulbs in the dome lamp. 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.
2 Dome Light Bulb parts are listed for the 2020 Audi A3, from HELLA and PEAK. 1 part fits every engine; the other 1 is engine-specific.
Part numbers include HELLA 2825, among others listed above.
Door Panel Light Bulb
Extended Life
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Popular Fits: all 2020 A3 engines | 2825LL | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Long LifeBase Type: W2.1x9.5d | View on Amazon |
Extra Bright (improved visibility, but shorter life)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Fits: all 2020 A3 engines | 2825ST | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | BlueSilver Star | View on Amazon |
LED (instant-on, long life, energy-saving)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Fits: all 2020 A3 engines | 2825SL | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | LEDCool White | View on Amazon |
| SYLVANIA Fits: all 2020 A3 engines | 2825BLED | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | ZEVO | View on Amazon |
| SYLVANIA Fits: all 2020 A3 engines | 2825BSL | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | LED | View on Amazon |
| SYLVANIA Fits: all 2020 A3 engines | 2825LED | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | ZEVOCool White | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Popular Fits: all 2020 A3 engines | 2825 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Base Type: W2.1x9.5dWattage: 5.00 W | View on Amazon |
This table covers the replacement bulbs for the Door Panel Light. 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.
7 Door Panel Light Bulb parts for the 2020 Audi A3 come from SYLVANIA. The "Popular" part is SYLVANIA 2825LL. Every part fits both the 1.4L L4 Turbocharged and the 2.0L L4 Turbocharged.
Extended Life: 1 part, from SYLVANIA. A representative part number is SYLVANIA 2825LL.
In the Extra Bright (improved visibility, but shorter life) grade, SYLVANIA supplies 1 part: grouped under the catalog's "Extra Bright (improved visibility, but shorter life)" designation — the notes column spells out what sets them apart. A representative part number is SYLVANIA 2825ST.
The LED (instant-on, long life, energy-saving) section lists 4 options from SYLVANIA — grouped under the catalog's "LED (instant-on, long life, energy-saving)" designation — the notes column spells out what sets them apart. SYLVANIA 2825SL is listed in this group.
Standard Replacement: 1 part, from SYLVANIA. A representative part number is SYLVANIA 2825.
Part numbers include SYLVANIA 2825LL, SYLVANIA 2825ST and SYLVANIA 2825SL, among others listed above.
Engine Compartment Light Bulb
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PEAK Fits: 2.0L L4 Turbocharged | 2825 | 🇺🇸 US 🇨🇦 CA | Average Rated Life: 750.0 HR | View on Amazon |
This table covers the replacement bulbs for the Engine Compartment Light. 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: PEAK 2825.
Fog / Driving Lamp Bulb
LED (instant-on, long life, energy-saving)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Fits: all 2020 A3 engines | H8LEDSP | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | LED | View on Amazon |
| SYLVANIA Fits: 2.0L L4 Turbocharged | H8LED | 🇺🇸 US 🇨🇦 CA | ZEVO Premium LED | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA Popular Fits: all 2020 A3 engines | H21W | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | HalogenSocket Type Bulb: BAY9S | View on Amazon |
| SYLVANIA Popular Fits: all 2020 A3 engines | H8 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Base Type: PGJ19-1Wattage: 35.00 W | View on Amazon |
| PHILIPS Fits: all 2020 A3 engines | H21W | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | RearHalogen | View on Amazon |
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Fits: all 2020 A3 engines | H8FV | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Fog Vision | View on Amazon |
| SYLVANIA Fits: all 2020 A3 engines | H8SZ | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Silver Star zXeBlue | 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.
7 Fog / Driving Lamp Bulb parts for the 2020 Audi A3 come from 3 brands — SYLVANIA, HELLA and PHILIPS. The "Popular" part is HELLA H21W. 6 parts fit every engine; the other 1 is engine-specific.
The LED (instant-on, long life, energy-saving) section: 2 options from SYLVANIA. SYLVANIA H8LEDSP is listed in this group.
Standard Replacement: 3 parts, from HELLA, SYLVANIA and PHILIPS. A representative part number is HELLA H21W.
2 further parts sit outside the graded sections, with the same engine-level match.
This group includes HELLA H21W, SYLVANIA H8LEDSP and SYLVANIA H8LED and the remaining parts above.
Glove Box Light Bulb
Extended Life
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Fits: all 2020 A3 engines | 2825LL | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Long LifeBase Type: W2.1x9.5d | View on Amazon |
Extra Bright (improved visibility, but shorter life)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Fits: all 2020 A3 engines | 2825ST | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | BlueSilver Star | View on Amazon |
LED (instant-on, long life, energy-saving)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Fits: all 2020 A3 engines | 2825SL | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | LEDCool White | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA Popular Fits: all 2020 A3 engines | 2825 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | IncandescentSocket Type Bulb: W2.1x9.5d | View on Amazon |
| SYLVANIA Fits: all 2020 A3 engines | 2825 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Base Type: W2.1x9.5dWattage: 5.00 W | View on Amazon |
This table covers the bulbs in the glove-box lamp. 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.
5 Glove Box Light Bulb parts for the 2020 Audi A3 come from 2 brands — SYLVANIA and HELLA. The "Popular" part is HELLA 2825. Every part fits both the 1.4L L4 Turbocharged and the 2.0L L4 Turbocharged.
Extended Life: 1 part, from SYLVANIA. A representative part number is SYLVANIA 2825LL.
Extra Bright (improved visibility, but shorter life): 1 part, from SYLVANIA. A representative part number is SYLVANIA 2825ST.
The LED (instant-on, long life, energy-saving) section: 1 option from SYLVANIA. SYLVANIA 2825SL is listed in this group.
Standard Replacement: 2 parts, from HELLA and SYLVANIA. A representative part number is HELLA 2825.
This group includes HELLA 2825, SYLVANIA 2825LL and SYLVANIA 2825ST and the remaining parts above.
Headlamp Bulb
HID (intense white light)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Fits: all 2020 A3 engines | D5S | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | High Beam and Low Beamwith HID Headlights | View on Amazon |
| ÜRO PARTS Fits: all 2020 A3 engines | D5S | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | High Beam and Low BeamXenon (12V - 25W) | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA Fits: all 2020 A3 engines | H8 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | HalogenSocket Type Bulb: PGJ19-1 | View on Amazon |
| PHILIPS Fits: all 2020 A3 engines | H8 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | High BeamHalogen | View on Amazon |
This table covers the bulbs that light the headlamps. Typical signs include a dark lamp, a flicker over bumps, or a bulb that keeps failing on one side. Avoid touching a halogen capsule. Repeated failure in one socket is usually the socket or ground, not the bulb.
4 Headlamp Bulb parts for the 2020 Audi A3 come from 4 brands — SYLVANIA, ÜRO PARTS, HELLA and 1 other brand. Every part fits both the 1.4L L4 Turbocharged and the 2.0L L4 Turbocharged.
In the HID (intense white light) grade, SYLVANIA and ÜRO PARTS supply 2 parts: grouped under the catalog's "HID (intense white light)" designation — the notes column spells out what sets them apart. A representative part number is SYLVANIA D5S.
Standard Replacement: 2 parts, from HELLA and PHILIPS. A representative part number is HELLA H8.
This group includes SYLVANIA D5S and HELLA H8 and the remaining parts above.
Headlamp Socket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO Fits: all 2020 A3 engines | PT2298 | 🇺🇸 US 🇨🇦 CA | GoldHeight (In): 1.5 in | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: all 2020 A3 engines | HP3835 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | HandypackConnector Shape: Oval | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: all 2020 A3 engines | S553 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Connector Shape: OvalContact Terminal Material: Metal | View on Amazon |
| ÜRO PARTS Fits: all 2020 A3 engines | 6R0973735 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | 10 pin black connector | View on Amazon |
This table covers the sockets that hold a headlamp bulb in the housing. Typical signs include a flicker over bumps, melted plastic, or a bulb that will not stay seated. Dielectric grease on the contacts slows corrosion. Do not force a bulb into a heat-damaged socket.
4 Headlamp Socket parts for the 2020 Audi A3 come from 3 brands — STANDARD MOTOR PRODUCTS, ACDELCO and ÜRO PARTS. Every part fits both the 1.4L L4 Turbocharged and the 2.0L L4 Turbocharged.
Listed part numbers: ACDELCO PT2298, STANDARD MOTOR PRODUCTS HP3835 and STANDARD MOTOR PRODUCTS S553, plus the other parts above.
Map / Reading Light Bulb
Extended Life
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Fits: all 2020 A3 engines | 2825LL | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Long LifeBase Type: W2.1x9.5d | View on Amazon |
Extra Bright (improved visibility, but shorter life)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Fits: all 2020 A3 engines | 2825ST | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | BlueSilver Star | View on Amazon |
LED (instant-on, long life, energy-saving)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Fits: all 2020 A3 engines | 2825SL | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | LEDCool White | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA Popular Fits: all 2020 A3 engines | 2825 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | IncandescentSocket Type Bulb: W2.1x9.5d | View on Amazon |
| SYLVANIA Fits: all 2020 A3 engines | 2825 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Base Type: W2.1x9.5dWattage: 5.00 W | View on Amazon |
This table covers the bulbs in the map / reading 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.
5 Map / Reading Light Bulb parts are listed for the 2020 Audi A3, from SYLVANIA and HELLA. HELLA 2825 carries the "Popular" badge. All of them fit every engine offered in the 2020 A3.
The Extended Life section: 1 option from SYLVANIA. SYLVANIA 2825LL is listed in this group.
The Extra Bright (improved visibility, but shorter life) section: 1 option from SYLVANIA. SYLVANIA 2825ST is listed in this group.
LED (instant-on, long life, energy-saving): 1 part, from SYLVANIA. A representative part number is SYLVANIA 2825SL.
The Standard Replacement section: 2 options from HELLA and SYLVANIA. HELLA 2825 is listed in this group.
Part numbers include HELLA 2825, SYLVANIA 2825LL and SYLVANIA 2825ST, among others listed above.
Step / Courtesy Light Bulb
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PEAK Fits: 2.0L L4 Turbocharged | 2825 | 🇺🇸 US 🇨🇦 CA | Average Rated Life: 750.0 HR | View on Amazon |
This table covers the bulbs in the step and courtesy 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 2020 Audi A3 — PEAK 2825.
Tail Lamp Bulb
Extended Life
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA Fits: all 2020 A3 engines | 921LL | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | IncandescentLong Life | View on Amazon |
| HELLA Fits: 1.4L L4 Turbocharged | DE3175LL | 🇲🇽 MX | IncandescentLong Life | View on Amazon |
LED (instant-on, long life, energy-saving)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PHILIPS Fits: 2.0L L4 Turbocharged | 7440RLED | 🇺🇸 US 🇨🇦 CA | Ultinon LEDRed | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA Popular Fits: all 2020 A3 engines | 2825 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | IncandescentSocket Type Bulb: W2.1x9.5d | View on Amazon |
| HELLA Fits: all 2020 A3 engines | 921 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | IncandescentSocket Type Bulb: W2.1x9.5d | View on Amazon |
| HELLA Fits: 1.4L L4 Turbocharged | 921NA | 🇲🇽 MX | IncandescentNatural Amber | View on Amazon |
| HELLA Fits: 2.0L L4 Turbocharged | 7440 | 🇺🇸 US 🇨🇦 CA | IncandescentSocket Type Bulb: W3X16D | 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.
7 Tail Lamp Bulb parts for the 2020 Audi A3 come from 2 brands — HELLA and PHILIPS. The "Popular" part is HELLA 2825. 3 parts fit every engine; the other 4 are engine-specific.
Extended Life: 2 parts, from HELLA. A representative part number is HELLA 921LL.
The LED (instant-on, long life, energy-saving) section: 1 option from PHILIPS. PHILIPS 7440RLED is listed in this group.
Standard Replacement: 4 parts, from HELLA. A representative part number is HELLA 2825.
This group includes HELLA 2825, HELLA 921LL and HELLA DE3175LL and the remaining parts above.
Trunk / Cargo Area Light Bulb
Extended Life
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Fits: all 2020 A3 engines | 2825LL | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Long LifeBase Type: W2.1x9.5d | View on Amazon |
Extra Bright (improved visibility, but shorter life)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Fits: all 2020 A3 engines | 2825ST | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | BlueSilver Star | View on Amazon |
LED (instant-on, long life, energy-saving)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Fits: all 2020 A3 engines | 2825SL | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | LEDCool White | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA Popular Fits: all 2020 A3 engines | 2825 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | IncandescentSocket Type Bulb: W2.1x9.5d | View on Amazon |
| SYLVANIA Fits: all 2020 A3 engines | 2825 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Base Type: W2.1x9.5dWattage: 5.00 W | View on Amazon |
This table covers the bulbs in the trunk or cargo-area lamp. 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.
5 Trunk / Cargo Area Light Bulb parts for the 2020 Audi A3 come from 2 brands — SYLVANIA and HELLA. The "Popular" part is HELLA 2825. Every part fits both the 1.4L L4 Turbocharged and the 2.0L L4 Turbocharged.
Extended Life: 1 part, from SYLVANIA. A representative part number is SYLVANIA 2825LL.
Extra Bright (improved visibility, but shorter life): 1 part, from SYLVANIA. A representative part number is SYLVANIA 2825ST.
The LED (instant-on, long life, energy-saving) section: 1 option from SYLVANIA. SYLVANIA 2825SL is listed in this group.
Standard Replacement: 2 parts, from HELLA and SYLVANIA. A representative part number is HELLA 2825.
Part numbers include HELLA 2825, SYLVANIA 2825LL and SYLVANIA 2825ST, among others listed above.
Turn Signal Lamp Bulb
Extended Life
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA Fits: all 2020 A3 engines | 921LL | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | IncandescentLong Life | View on Amazon |
| HELLA Fits: 1.4L L4 Turbocharged | DE3175LL | 🇲🇽 MX | IncandescentLong Life | View on Amazon |
| PHILIPS Fits: 2.0L L4 Turbocharged | PY21WLL | 🇺🇸 US 🇨🇦 CA | Longer LifeNatural Amber | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA Popular Fits: all 2020 A3 engines | 921 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | IncandescentSocket Type Bulb: W2.1x9.5d | View on Amazon |
| HELLA Fits: 1.4L L4 Turbocharged | 921NA | 🇲🇽 MX | IncandescentNatural Amber | View on Amazon |
| PHILIPS Fits: 2.0L L4 Turbocharged | 12174NA | 🇺🇸 US 🇨🇦 CA | Natural Amber | View on Amazon |
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Fits: all 2020 A3 engines | PWY24W | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Frontwith HID Headlights | 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.
7 Turn Signal Lamp Bulb parts are listed for the 2020 Audi A3, from HELLA, PHILIPS and SYLVANIA. HELLA 921 carries the "Popular" badge. 3 parts fit every engine; the other 4 are engine-specific.
The Extended Life section: 3 options from HELLA and PHILIPS. HELLA 921LL is listed in this group.
The Standard Replacement section: 3 options from HELLA and PHILIPS. HELLA 921 is listed in this group.
1 ungrouped part is not assigned to a grade, with the same engine-level match.
Listed part numbers: HELLA 921, HELLA 921LL and HELLA DE3175LL, plus the other parts above.
Buying Electrical Bulb & Socket Parts for a 2020 Audi A3
On this vehicle, the bulb and socket system covers every bulb and socket on the vehicle, from headlamps to instrument-cluster illumination.
- Match the engine first. Some electrical bulb & socket parts fit every engine; others are engine-specific. Each row shows which engine(s) it fits.
- 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: Door Panel Light Bulb and Fog / Driving Lamp Bulb .
Frequently Asked Questions
How many electrical bulb & socket parts fit the 2020 Audi A3?
Our catalog currently lists 63 electrical bulb & socket parts for the 2020 Audi A3 across 15 subcategories and 7 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 2020 Audi A3 engines?
Some do. 51 parts fit every engine; the other 12 are engine-specific. Each row (and the filter at the top) shows which. If you're unsure which engine you have, check the emissions label under the hood or the 8th character of your VIN.
What are the signs of electrical bulb & socket problems on a 2020 Audi A3?
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 2020 Audi A3 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 2020 Audi A3?
First match the engine — each row shows which engine(s) the part fits. 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 2020 Audi A3
Electrical Bulb & Socket Parts for Other Audi A3 Years
Switch vehicle or jump to a subcategory
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.