2023 Audi A6
Vehicle Specs & Maintenance Data
The 2023 Audi A6 maintenance specs on this page cover the key fluids, torque values, and wear items you need for routine service. Use these numbers as a quick reference when performing oil changes, tire rotations, brake jobs, and other scheduled maintenance on your Audi A6.
For oil changes, the 2023 Audi A6 takes 5W-40 Full Synthetic motor oil with a capacity of 5.7 quarts. Brake fluid type is DOT 4, the recommended coolant is G13 (Purple, phosphate-free), and transmission fluid is VW G 055 025 A2. Always use the manufacturer-recommended fluids to maintain warranty coverage and engine longevity.
When mounting wheels on the Audi A6, torque the lug nuts to 89 ft-lbs using a calibrated torque wrench. Over- or under-torquing can lead to warped brake rotors or loose wheels. Re-torque after 50 to 100 miles on newly installed wheels.
Owners of the 2023 Audi A6 have reported 5 common issues including "EA888 Engine Coolant Leak from Water Pump Housing", "7-Speed S-Tronic Dual-Clutch Shudder" and "Dual Touchscreen MMI System Software Instability". Scroll down to the Diagnostics tab for detailed descriptions, solutions, and estimated repair costs.
There is 1 NHTSA safety recall on file for the 2023 Audi A6. Check the Recalls tab below for full details.
Specifications on this page are compiled from multiple publicly available sources including manufacturer documentation, NHTSA data, and automotive databases. Always cross-reference with your owner's manual or official factory documentation before purchasing parts or performing any service.
The 2023 Audi A6 uses 5W-40 Full Synthetic motor oil (5.7 qt capacity), requires lug nuts torqued to 89 ft-lbs, takes DOT 4 brake fluid.
Manufacturer-recommended maintenance schedule for the 2023 Audi A6. Always verify intervals against your owner's manual.
Enter a diagnostic trouble code to see causes, symptoms, and fixes for the 2023 Audi A6.
Common problems reported by 2023 Audi A6 owners, with recommended fixes and estimated repair costs.
EA888 Engine Coolant Leak from Water Pump Housing
The 2.0L EA888 turbocharged engine in the A6 45 TFSI suffers from coolant leaks at the water pump and thermostat housing, a persistent issue across the EA888 platform. The plastic housing develops hairline cracks from thermal cycling, and the internal water pump impeller can degrade. Owners notice sweet coolant odor, low coolant warnings, and visible coolant pooling under the front of the vehicle.
Dealer replaces the water pump and thermostat housing as a combined assembly. An updated housing with improved plastic composition is available. The cooling system must be properly bled of air after the repair. Use Audi G13 specification coolant only. Reference Audi TSB 2028746/5 for cooling system diagnosis.
Est. Cost: $800 - $1,8007-Speed S-Tronic Dual-Clutch Shudder
The A6's 7-speed S-Tronic (DL382) dual-clutch transmission produces shuddering vibrations during low-speed driving, particularly during gentle acceleration from stops and during parking maneuvers. The dual-clutch packs struggle to engage smoothly at walking speeds. The shudder is most noticeable when the transmission is cold and improves somewhat as it reaches operating temperature.
Dealer performs a transmission adaptation reset via VAS diagnostic system and updates the TCU to the latest software calibration. The dual-clutch fluid should be changed using the specified G 052 529 A2 fluid. If software and fluid changes do not resolve the shudder, the clutch pack assembly is replaced. Reference Audi TSB 2046783/2.
Est. Cost: $300 (fluid change) - $4,000 (clutch replacement)Dual Touchscreen MMI System Software Instability
The A6 features Audi's dual-screen MMI touch response system (upper 10.1-inch and lower 8.6-inch displays) which suffers from software instability. The screens freeze, go black, or reboot while driving. The lower screen's haptic feedback can stop working, and settings revert to defaults after a reboot. Wireless Apple CarPlay is particularly unstable, with frequent disconnections and audio dropouts.
Dealer updates the MMI system software to the latest version. A full system reset may be required, which erases all saved settings and preferences. The MIB3 main unit may need replacement if software updates do not resolve hardware-level display issues. Reference Audi TSB 2055892/1 for MMI system diagnosis.
Est. Cost: $0 (software update) - $3,000 (MIB3 unit replacement)48V Mild Hybrid System Battery Degradation
The A6's 48V mild hybrid lithium-ion battery can degrade prematurely, reducing the effectiveness of the start-stop system and coasting function. Symptoms include the engine not shutting off at stops (start-stop disabled), a warning message indicating '48V battery service required,' and reduced fuel economy. Vehicles that sit for extended periods or are used primarily for short trips are more susceptible to battery degradation.
Dealer tests the 48V battery using the VAS diagnostic system and replaces it if capacity has fallen below threshold. The battery management controller software should be updated. The 48V battery is located in the trunk area and replacement requires approximately 2 hours of labor. Reference Audi TSB 2049387/1 for 48V system diagnosis.
Est. Cost: $800 - $2,000Exterior Door Handle Touch Sensor Malfunction
The A6 uses touch-sensitive capacitive sensors in the exterior door handles for keyless entry. These sensors can malfunction due to moisture intrusion, cold weather, or electronic interference, causing the doors to not unlock when touched or to lock/unlock randomly. Wearing gloves renders the sensors inoperative, which is frustrating in cold climates. Some owners report the vehicle randomly locking itself while they are loading cargo.
Dealer replaces the affected door handle sensor module. The comfort access control module may need a software update to improve sensor sensitivity calibration. Updated sensor modules with improved moisture resistance are available. The key fob battery should also be checked as weak battery signals can cause erratic behavior.
Est. Cost: $300 - $800 per door handle1 NHTSA safety recall for the 2023 Audi A6. Check your VIN at NHTSA.gov
BACK OVER PREVENTION: SENSING SYSTEM: CAMERA
Volkswagen Group of America, Inc. (Audi) is recalling certain 2019-2026 vehicles. Please see the recall report for a complete list of models. A software error may prevent the rearview camera image from displaying as intended. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 111, "Rear Visibility."
A rearview image that does not display reduces the driver's view behind the vehicle, increasing the risk of a crash.
Dealers will update the software, free of charge. Owner notification letters were mailed January 14, 2026. Owners may contact Audi customer service at 1-800-253-2834. Audi's number for this recall is 90TV. Vehicle Identification Numbers (VINs) involved in this recall became searchable on NHTSA.gov on December 23, 2025.