2020 Audi S4

Problems, Recalls & Reliability Report

Above Average

Quick Summary

The 2020 Audi S4 has 34 owner complaints filed with NHTSA — that's 0.4x the segment average of 80. The most common issue is electrical problems (41% of all complaints), specifically: sos module. audi had a service for the known problem internally (service action 90t2) then stopped it apparently but many of us still experiencing issues that were not able to get the part corrected. sos, gps, bluetooth, all hands free does not work. 6 months plus of waiting for a $2k part on backor.

Total Complaints

Recalls Issued

—/5

Safety Stars

0.4x

vs Segment Avg

Known Problems

ELECTRICAL

14 complaints

41%

• SOS module. Audi had a service for the known problem internally (Service Action 90T2) then stopped it apparently but many of us still experiencing issues that were not able to get the part corrected. SOS, GPS, Bluetooth, all hands free does not work. 6 months plus of waiting for a $2k part on backor
• The MMI system is frequently rebooting at random moments while driving.
• The primary infotainment/mmi screen randomly turns off and a system reboot occurs, which can take a period of time. This causes a loss of all parking sensors, rear view cameras, navigation etc. Dangerous when the system dies in the middle of a bustle parking lot or having to restart the system at hi

Typical onset: 50K miles Est. repair: $500

“SOS module. Audi had a service for the known problem internally (Service Action 90T2) then stopped it apparently but many of us still experiencing issues that were not able to get the part corrected. SOS, GPS, Bluetooth, all hands free does not work. 6 months plus of waiting for a $2k part on backor”

— NHTSA complaint filing

DRIVER ASSIST/CAMERAS

14 complaints

41%

• The primary infotainment/mmi screen randomly turns off and a system reboot occurs, which can take a period of time. This causes a loss of all parking sensors, rear view cameras, navigation etc. Dangerous when the system dies in the middle of a bustle parking lot or having to restart the system at hi
• The primary infotainment/mmi screen randomly turns off and a system reboot occurs, which can take a period of time. This causes a loss of all parking sensors, rear view cameras, navigation etc. Dangerous when the system dies in the middle of a bustle parking lot or having to restart the system at hi
• Audi MMI (infotainment) frequently resets during use of car. Spoke to tech at audi and they confirmed this is an issue on many 2020 audi A4 and S4 vehicles. The blind spot monitors, parking sensors, and backup cameras all disabled when this happens. It can happen at any time.

Typical onset: 50K miles Est. repair: $500

“The primary infotainment/mmi screen randomly turns off and a system reboot occurs, which can take a period of time. This causes a loss of all parking sensors, rear view cameras, navigation etc. Dangerous when the system dies in the middle of a bustle parking lot or having to restart the system at hi”

— NHTSA complaint filing

OTHER

5 complaints

15%

• The MMI spontaneously reboots numerous times while driving. When the reboots happen, the screen goes black, and key systems such as the backup camera, rear obstacle detection, and navigation become unavailable until the reboot completes and the systems reload. Restoring functionality requires user i
• The Audi MMI (Multi Media Interface) system plays a crucial role in enhancing safety features by providing a user-friendly interface for managing various driver assistance systems and safety-related functions. These include features like emergency calls, roadside assistance, and the integration of d
• The MMI (multimedia interface) screen goes dead and reboots frequently (every 2-5 minutes) while driving. It is extremely frustrating and distracting. In addition, when the screen blacks out while driving in reverse, the backup camera, back up sensors and cross traffic warning systems do not ope

Typical onset: 50K miles Est. repair: $500

“The MMI spontaneously reboots numerous times while driving. When the reboots happen, the screen goes black, and key systems such as the backup camera, rear obstacle detection, and navigation become unavailable until the reboot completes and the systems reload. Restoring functionality requires user i”

— NHTSA complaint filing

VISIBILITY

1 complaints

• Audi MMI (infotainment) frequently resets during use of car. Spoke to tech at audi and they confirmed this is an issue on many 2020 audi A4 and S4 vehicles. The blind spot monitors, parking sensors, and backup cameras all disabled when this happens. It can happen at any time.

Typical onset: 50K miles Est. repair: $500

“Audi MMI (infotainment) frequently resets during use of car. Spoke to tech at audi and they confirmed this is an issue on many 2020 audi A4 and S4 vehicles. The blind spot monitors, parking sensors, and backup cameras all disabled when this happens. It can happen at any time.”

— NHTSA complaint filing

Estimated Repair Costs

ELECTRICAL(~50K mi)

$500

DRIVER ASSIST/CAMERAS(~50K mi)

$500

OTHER(~50K mi)

$500

VISIBILITY(~50K mi)

$500

Estimates based on average reported repair costs. Actual costs vary by location, shop, and severity.

🔍 Pre-Purchase Inspection Checklist

Based on 34 owner complaints for this specific year, here's what to check or ask about:

☐
ELECTRICAL: SOS module. Audi had a service for the known problem internally (Service Action 90T2) then stopped it apparently but many of us still experiencing issues that were not able to get the part corrected. SOS, GPS, Bluetooth, all hands free does not work. 6 months plus of waiting for a $2k part on backor
Typically appears around 50K miles. Repair cost ~$500
☐
DRIVER ASSIST/CAMERAS: The primary infotainment/mmi screen randomly turns off and a system reboot occurs, which can take a period of time. This causes a loss of all parking sensors, rear view cameras, navigation etc. Dangerous when the system dies in the middle of a bustle parking lot or having to restart the system at hi
Typically appears around 50K miles. Repair cost ~$500
☐
OTHER: The MMI spontaneously reboots numerous times while driving. When the reboots happen, the screen goes black, and key systems such as the backup camera, rear obstacle detection, and navigation become unavailable until the reboot completes and the systems reload. Restoring functionality requires user i
Typically appears around 50K miles. Repair cost ~$500
☐
VISIBILITY: Audi MMI (infotainment) frequently resets during use of car. Spoke to tech at audi and they confirmed this is an issue on many 2020 audi A4 and S4 vehicles. The blind spot monitors, parking sensors, and backup cameras all disabled when this happens. It can happen at any time.
Typically appears around 50K miles. Repair cost ~$500
☐
General: Get a pre-purchase inspection from an independent mechanic ($100-$200)