2013 Audi A4 Speaker Sizes and Audio System Guide
2013 Audi A4 Speaker Sizes and Audio System Guide
This page covers the factory speaker layout, common speaker locations, and upgrade notes for the 2013 Audi A4. Equipment can vary by trim, body style, and audio package, so some vehicles may include optional tweeters, a center channel, or a subwoofer. Factory amplifier details should be verified by trim and audio package before planning any speaker upgrade.
Data verified by Nick Marchenko, PhD
Speaker Size Chart – 2013 Audi A4
Use this table as the main reference. Fitment depends on trim, factory audio package, mounting depth, and adapter availability.
| Location | Type | Factory Size | Note |
|---|---|---|---|
| Rear Deck Corner | Mid-Range | 3.5 inch | |
| Rear Deck Corner | Subwoofer | 8 inch | if equipped |
| Front Door | Tweeter | 1 inch | if equipped |
| Front Door | Full-Range | 6.5 inch | |
| Dash Corner | Tweeter | 1 inch | if equipped |
| Rear Door | Tweeter | 1 inch | if equipped |
| Rear Door | Full-Range | 6.5 inch | |
| Center Dash | Center Channel | 2.5 inch | if equipped |
Generic speaker location diagram. The table above shows the specific factory sizes for this vehicle. Exact location details may vary by body style and trim.
Speaker Count by Trim – 2013 Audi A4
Speaker count and audio equipment vary by trim and factory audio package. This table lists known configurations from our database.
| Trim | Speakers | Amplifier | Radio | Navigation |
|---|---|---|---|---|
| 2.0T Premium 4dr All-wheel Drive quattro Sedan | 10 | 180W | – | – |
| 2.0T Premium 4dr Front-wheel Drive FrontTrak Sedan | 10 | 180W | – | – |
Data sourced from manufacturer specifications. Verify with the window sticker or dealer before ordering audio components.
Vehicle and Audio System Specifications
This block helps identify the vehicle and its audio system configuration for fitment decisions.
Body Style Audio Differences
This 2013 Audi A4 uses the same core speaker layout across the available body styles, but rear speaker placement and factory audio packages may still vary by configuration. Factory amplifier details should be verified by trim and audio package, and optional tweeters, center channel, or subwoofer may be included if equipped.
What Speakers Fit the 2013 Audi A4?
Aftermarket fitment should start with the factory speaker locations listed above, but diameter alone is not enough. Check mounting depth, bracket fit, connector type, and whether the vehicle has a premium or factory-amplified audio system. The 2013 Audi A4 uses multiple 6.5 inch full-range locations, plus smaller factory positions that may vary by audio package. An 8 inch subwoofer is listed if equipped, and factory amplifier details should be verified by trim and audio package.
Usually Safe Upgrades
- If your vehicle uses the 6.5 inch front door location, many aftermarket full-range speakers in that size can be considered, but mounting depth and connector style still need to be checked.
- If your vehicle uses the 6.5 inch rear door location, replacement speakers in the same size are the first place to start, especially when matching factory fit and output.
- If your vehicle uses the 3.5 inch rear deck corner location, compact mid-range replacements in that size may work, provided the mounting pattern and depth are confirmed.
- If your vehicle uses the 1 inch tweeter locations, replacement tweeters may be possible if equipped, but the factory mounting method should be matched carefully.
- If your vehicle uses the 8 inch subwoofer location, subwoofer upgrades should be matched to the enclosure and audio package if equipped.
Check Before Buying
- Confirm the exact speaker location before ordering, since this model can use different factory audio layouts.
- Measure mounting depth and opening diameter, because the listed factory size does not guarantee aftermarket clearance.
- Verify connector type and mounting style so the replacement can be adapted correctly.
- Check whether the vehicle has a factory-amplified or premium audio system, since speaker choice and wiring needs can change.
- Keep in mind that equipment can vary by trim and audio package, so the speaker count and optional locations should be matched to the specific vehicle.
Installation Notes
The 2013 Audi A4 uses a 10-speaker layout on the trims listed here, with 6.5-inch full-range speakers in the front and rear doors, 3.5-inch mid-range speakers in the rear deck corner, and optional tweeters, a center channel, and a factory subwoofer depending on equipment. Installation usually starts with careful panel removal, since door panels and dash trim can be tight and clips can be easy to damage. Check speaker depth before ordering replacements, especially in the front doors and rear deck area, because clearance can vary. Mounting adapters may be needed to adapt aftermarket speakers to the factory openings, and harness adapters help avoid cutting the original wiring. If your vehicle has the factory subwoofer, plan for additional fitment and wiring checks before replacing it. Factory amplifier details should be verified by trim and audio package, since the 180W setup is listed on some trims and radio/navigation equipment can vary. Always test each speaker after installation to confirm polarity, balance, and proper operation before reassembling the panels.
Moderate difficulty, with extra care needed for trim removal, wiring, and fitment checks.
Common Mistakes When Replacing Speakers
When shopping for speaker upgrades on the 2013 Audi A4, the biggest problems usually come from assuming every car is wired the same and skipping a few fitment checks.
- Buying based only on the body-style label instead of checking actual speaker locations on the vehicle.
- Ignoring trim and audio package differences, since speaker count, amplifier setup, radio, and navigation can vary by trim.
- Assuming the factory speaker layout is identical everywhere and overlooking optional tweeters, the center channel, or the subwoofer if equipped.
- Choosing new speakers without confirming mounting depth, diameter, and connector style for each location.
- Skipping a test fit and audio check before reassembly, which can leave you with rattles, polarity issues, or a speaker that does not play correctly.
Generation & Model Family
The 2013 Audi A4 belongs to the Fourth generation (B8) - Facelift (2013–2016) family. Nearby model years often share similar speaker locations and audio layouts, but exact fitment can vary by trim and audio package – verify before ordering.
Recommended Upgrade Path
The 2013 Audi A4 uses a 10-speaker layout on the trims listed here, and equipment can vary by audio package. Front-stage upgrades are usually the best starting point for cleaner sound, while bass and amplifier choices should be matched to the factory system setup. If equipped, tweeters and the factory subwoofer can also shape the upgrade plan.
| Goal | Best Upgrade Path | Why |
|---|---|---|
| Better clarity | Upgrade the front door full-range speakers first, then add matching front tweeters if equipped to improve detail and imaging. | The front stage does the most work for vocals and instruments, so improving those speakers usually gives the clearest audible gain. |
| More bass | If equipped, keep the factory subwoofer in mind as you plan the system, then add an aftermarket subwoofer and enclosure to strengthen low-end output. | A dedicated subwoofer adds deeper bass without asking the factory speakers to handle low frequencies they cannot reproduce well. |
| Louder sound | Properly matched speakers and amplifier integration can improve volume and reduce distortion. Verify factory amp and premium system integration before adding aftermarket amplifiers. | More power only helps when the speakers and signal path are matched correctly, especially in systems where factory amplification may be present. |
| Budget improvement | Replace the front door speakers first with same-size replacement speakers and the correct mounting brackets. | The front doors are the most-used speakers, so this is usually the most cost-effective way to improve everyday sound quality. |
| Factory look | Use same-size replacement speakers with the correct mounting brackets and harness adapters for a clean install that preserves the factory wiring and appearance. | This approach keeps the interior looking original while still allowing a meaningful audio upgrade. |
Mounting Adapters and Wiring
The same nominal diameter does not guarantee a direct mount. Before ordering, confirm:
- Speaker depth: Aftermarket speakers often have larger magnets – measure available depth at each location.
- Mounting brackets: Door locations typically need a bracket or spacer to clear the window regulator and achieve correct mounting depth.
- Wiring harness adapters: Use a plug-and-play harness adapter to preserve factory wiring.
- Tweeter mounting cups: Replacing OEM tweeters may require surface-mount cups or brackets depending on the location.
- Factory or premium amplified systems: If the vehicle has a premium or factory-amplified audio system, confirm how the factory radio, amplifier, and speakers are connected before adding aftermarket amplifiers. Depending on the setup, a line output converter, DSP, integration harness, or professional installation may be needed.
- Connector type: Factory connectors vary by trim and model year – confirm compatibility before splicing or using an adapter.
Frequently Asked Questions
What size are the front door speakers in a 2013 Audi A4?
The front door speakers are 6.5-inch full-range units. Front door tweeters are also listed as 1-inch speakers if equipped, so the exact setup can vary by audio package.
What size are the rear speakers in a 2013 Audi A4?
The rear door speakers are 6.5-inch full-range units. The rear deck corner also uses a 3.5-inch mid-range speaker, and an 8-inch subwoofer may be present if equipped.
Does the 2013 Audi A4 have a factory subwoofer?
A factory subwoofer is listed as an 8-inch unit in the rear deck corner if equipped. Availability can depend on the trim and audio system.
Can I replace the speakers without replacing the radio?
Yes, speaker upgrades can be done while keeping the factory radio. The car uses multiple speaker locations, so matching the new speakers to the existing system layout is important.
Do I need mounting adapters for speaker replacement?
Mounting adapters may be needed depending on the speaker location and the replacement speaker design. Checking the factory speaker size and depth before buying parts is the safest approach.
Does the 2013 Audi A4 have a factory amplifier?
Factory amplifier details should be verified by trim and audio package. The listed trim data shows a 180W amplifier on some versions, but it is not universal across the model.