This page lists 21 electrical parts for the 2025 Audi A3, across 3 part types, covering both the 1.4L L4 Turbocharged and the 2.0L L4 Turbocharged. Every part shows its brand, manufacturer part number and fitment notes.
The electrical system on the 2025 Audi A3 covers charging, starting and the sensors and modules the vehicle relies on, from alternator and starter to oxygen sensors. All 21 listed parts are Battery (10 parts), Starter Motor (9 parts) and Parking Aid Sensor (2 parts).
The 2025 Audi A3 was sold with both the 1.4L L4 Turbocharged and the 2.0L L4 Turbocharged. 11 parts fit every engine; the other 10 are engine-specific. Each part shows which engine(s) it fits.
11 brands supply electrical parts for the 2025 Audi A3, led by FVP (4 parts), DEKA (3 parts) and BOSCH (3 parts), plus 8 more brands. Quality grades include Remanufactured and New.
A "Popular" badge means the source catalog flagged the part as frequently chosen for the 2025 Audi A3. 4 parts have it, including DEKA 9A48 (Battery) and BOSCH SR6601N (Starter Motor). Each part number opens a page with every vehicle that part fits.
Battery
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DEKA Popular Fits: all 2025 A3 engines | 9A48 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | IntimidatorAGM | View on Amazon |
| DEKA Popular Fits: all 2025 A3 engines | 9A94R | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | IntimidatorAGM | View on Amazon |
| BOSCH Fits: all 2025 A3 engines | S6587B | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | AGMAGM | View on Amazon |
| DEKA Fits: all 2025 A3 engines | 9A47 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | IntimidatorAGM | View on Amazon |
| EXIDE Fits: all 2025 A3 engines | MXH5L247 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Marathon MaxBCI Group 47 (H5) | View on Amazon |
| EXIDE Fits: all 2025 A3 engines | MXH6L348 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Marathon MaxBCI Group 48 (H6) | View on Amazon |
| EXIDE Fits: all 2025 A3 engines | MXH7L494R | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Marathon MaxBCI Group 94R (H7) | View on Amazon |
| FVP Fits: all 2025 A3 engines | P94RAGM | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Platinum AGMBCI Group: 94R | View on Amazon |
| FVP Fits: all 2025 A3 engines | P47AGM | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Platinum AGMBCI Group: 47 | View on Amazon |
| FVP Fits: all 2025 A3 engines | P48AGM | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Platinum AGMBCI Group: 48 | View on Amazon |
This table covers the batteries listed by group size and specification. Typical signs include slow cranking, a battery lamp, or a no-start after the vehicle sat overnight. Confirm group size and terminal layout in the notes. Clean the posts and the ground before condemning the battery.
10 Battery parts are listed for the 2025 Audi A3, from DEKA, EXIDE, FVP and 1 other brand. DEKA 9A48 carries the "Popular" badge. All of them fit every engine offered in the 2025 A3.
Parking Aid Sensor
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BOSCH Fits: 2.0L L4 Turbocharged | F00E270804 | 🇺🇸 US 🇨🇦 CA | Fits Rear Outer | View on Amazon |
| VARIOUS MFR Fits: all 2025 A3 engines | AU1075109 | 🇲🇽 MX | Customer Paints to Match | View on Amazon |
This table covers the ultrasonic park-aid sensors in the bumper. Typical signs include a warning lamp, a stored code, or a reading that drops out when the harness is wiggled. Inspect the connector and ground before replacing the sensor — wiring faults are often condemned as bad sensors.
2 Parking Aid Sensor parts for the 2025 Audi A3 come from 2 brands — BOSCH and VARIOUS MFR. 1 part fits every engine; the other 1 is engine-specific.
This group includes BOSCH F00E270804 and VARIOUS MFR AU1075109.
Starter Motor
New
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BOSCH Popular Fits: 2.0L L4 Turbocharged | SR6601N | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| WAI GLOBAL Popular Fits: 2.0L L4 Turbocharged | 30236N | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| VALEO Fits: 2.0L L4 Turbocharged | 438524 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Valeo Origins New Stop&StartFamily: Valeo OE | View on Amazon |
Remanufactured
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FVP Fits: 2.0L L4 Turbocharged | 12791 | 🇺🇸 US 🇨🇦 CA | Remanufactured | View on Amazon |
| PURE ENERGY Fits: 2.0L L4 Turbocharged | 12791 | 🇺🇸 US 🇨🇦 CA | Remanufactured | View on Amazon |
| REMY Fits: 2.0L L4 Turbocharged | 16655 | 🇺🇸 US 🇨🇦 CA | Remanufactured | View on Amazon |
| TERREPOWER Fits: 2.0L L4 Turbocharged | 52230 | 🇺🇸 US 🇨🇦 CA | Remanufactured | View on Amazon |
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA Fits: 2.0L L4 Turbocharged | 011613291 | 🇺🇸 US | View on Amazon | |
| HELLA Fits: 2.0L L4 Turbocharged | 012528581 | 🇺🇸 US | View on Amazon |
This table covers the starter motors that crank the engine. Typical signs include no motion, a squeal, or a motor that only runs on one speed. Confirm power, ground and the control module before replacing the motor.
9 Starter Motor parts for the 2025 Audi A3 come from 8 brands — HELLA, BOSCH, WAI GLOBAL and 5 other brands. The "Popular" part is BOSCH SR6601N.
The New section lists 3 options from BOSCH, WAI GLOBAL and VALEO — brand-new units rather than rebuilt ones. BOSCH SR6601N is listed in this group.
The Remanufactured section lists 4 options from FVP, PURE ENERGY, REMY and 1 other brand — factory-rebuilt units with new wear components. FVP 12791 is listed in this group.
2 further parts sit outside the graded sections, with the same engine-level match.
Part numbers include BOSCH SR6601N, WAI GLOBAL 30236N and VALEO 438524, among others listed above.
Buying Electrical Parts for a 2025 Audi A3
On this vehicle, the electrical system covers charging, starting and the sensors and modules the vehicle relies on, from alternator and starter to oxygen sensors.
- Match the engine first. Some electrical 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, clean or renew the battery terminals and grounds with any charging-system repair.
- Cross-reference the manufacturer part number against your old part or a service-manual listing.
Start with the largest groups on this page: Battery and Starter Motor .
Frequently Asked Questions
How many electrical parts fit the 2025 Audi A3?
Our catalog currently lists 21 electrical parts for the 2025 Audi A3 across 3 subcategories and 11 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 parts differ between 2025 Audi A3 engines?
Some do. 11 parts fit every engine; the other 10 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 problems on a 2025 Audi A3?
Common symptoms include slow cranking on cold mornings, a battery light that flickers, dim lights at idle, or a check-engine code pointing at a sensor circuit. 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, clean or renew the battery terminals and grounds with any charging-system repair.
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 2025 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 2025 Audi A3?
First match the engine — each row shows which engine(s) the part fits. Then test before replacing — a failed alternator and a bad ground can look identical, and sensors are frequently condemned for wiring faults. The notes column carries position and trim qualifiers where they apply.
Other Parts for the 2025 Audi A3
Electrical 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.