Audi · Known Issues
2021 Audi e-tron Problems: 15 Known Issues
2021 model year · 484+ owner reports · Updated September 2026
2021 · All trims · All engines
Choose the year and equipment for your written issues and visual request.
2021 model year · 484+ owner reports · Updated September 2026
2021 · All trims · All engines
Choose the year and equipment for your written issues and visual request.
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According to Au7o's analysis of 484+ owner reports, the 2021 Audi e-tron has 15 documented known issues, with 8 rated critical. The most serious are 2019-2022 e-tron Coolant Valve N632 Leak in Cold Conditions - Diagnosis Required, CCS Charging Port Actuator Failure ($600-$2,000 repair), e-tron Brake Pedal Pushrod Fastener May Loosen and Separate From Brake Booster - Recall 24V621 ($0-$0 repair), e-tron Portable 240V Charging Cable Overheats at Full Current - Recall 23V842 (Audi 93U6) ($0-$0 repair), 2020-2021 e-tron Brake Pressure Unit Rotor-to-Shaft Weld May Separate, Losing ABS and ESC - Recall 21V569 (Audi 47R1) ($0-$0 repair), 2019-2022 e-tron High-Voltage Battery Self-Discharge / Fire Risk - Recall 23V867, e-tron Front (APA250) and Rear (AKA320) Drive Unit Internal Coolant Seal Failure - Isolation Faults and Motor Destruction ($2,800-$9,000 repair) and 2021 e-tron Charging Interruptions with Onboard-Charger Software 0070 - Diagnosis Required. The most commonly reported issue is OTA Software Update and Infotainment Issues with 180 owner reports. Across all issues with published estimates, repair costs range from $250 to $9,000. DIY maintenance guides at au7o.io.
ELECTRICAL SYSTEM:PROPULSION SYSTEM:CHARGING:CABLE/CORD:ONBOARD
Volkswagen Group of America, Inc. (Audi) is recalling certain 2022-2024 RS e-tron GT, e-tron GT, Q4 e-tron Sportback, Q4 e-tron, 2020-2021 Audi A8, 2019-2024 e-tron Quattro, 2020-2024 e-tron Sportback Quattro, Q5, and 2021-2022 A7 vehicles. When using the industrial 220V/240V plug at the 100% charge setting, some home power outlets may be incapable of handling the electrical current required to utilize the compact charging system, causing the outlet or charging cable to overheat.
AIR BAGS:SENSOR:OCCUPANT CLASSIFICATION:FRONT PASSENGER
Volkswagen Group of America, Inc. (Volkswagen) is recalling certain 2023 Audi S5 Cabriolet, A4 Allroad, Q5 Sportback, A3 Sedan, S5 Sportback, SQ7, TT Coupe, TT Roadster, RS5 Sportback, 2024 A8, E-Tron Quattro, E-Tron Sportback Quattro, Q8, RSQ8, 2023-2024 Q3, Q5, and Q7 vehicles. An electrical connection in the front passenger seat for the occupant detection system (ODS) control module may loosen and deactivate the front passenger air bag.
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."
SEAT BELTS:REAR/OTHER:RETRACTOR
Volkswagen Group of America, Inc. (Volkswagen) is recalling certain 2021 Volkswagen ID4, Audi A4 Allroad, A4 Sedan, A5 Cabriolet, A5 Coupe, A5 Sportback, A6 Allroad, A6 Sedan, A7, A8, E-Tron Quattro, E-Tron Sportback Quattro, Q3, Q5, Q5 Sportback, Q7, Q8, RS5 Sportback, RS5 Coupe, RS6 Avant, RS7, RSQ8, S4 Sedan, S5 Cabriolet, S5 Coupe, S5 Sportback, S6 Sedan, S7, S8, SQ5, SQ5 Sportback, SQ7, SQ8, and 2021-2022 S3 Sedan vehicles. The rear seat belt automatic locking retractors may deactivate early, which can prevent the child restraint system from securing properly. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 208, "Occupant Crash Protection."
SERVICE BRAKES, HYDRAULIC
Volkswagen Group of America, Inc. (Audi) is recalling certain 2021 Audi E-Tron Quattro and E-Tron Sportback Quattro vehicles. Corrosion in the brake booster may cause the Anti-Lock Brake System (ABS), Electronic Stability Control (ESC), speedometer display, and brake assist to stop functioning.
+ 6 more recalls. Check all on NHTSA.gov
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According to Au7o's analysis of 484+ owner reports, the 2021 Audi e-tron has 15 documented issues. The most frequently reported are: 2019-2022 e-tron Coolant Valve N632 Leak in Cold Conditions - Diagnosis Required, CCS Charging Port Actuator Failure, e-tron Brake Pedal Pushrod Fastener May Loosen and Separate From Brake Booster - Recall 24V621. Of these, 8 are rated critical and should be addressed promptly.
The 2021 Audi e-tron has 15 known issues documented across 484+ owner reports. 8 issues are rated critical: 2019-2022 e-tron Coolant Valve N632 Leak in Cold Conditions - Diagnosis Required and CCS Charging Port Actuator Failure and e-tron Brake Pedal Pushrod Fastener May Loosen and Separate From Brake Booster - Recall 24V621 and e-tron Portable 240V Charging Cable Overheats at Full Current - Recall 23V842 (Audi 93U6) and 2020-2021 e-tron Brake Pressure Unit Rotor-to-Shaft Weld May Separate, Losing ABS and ESC - Recall 21V569 (Audi 47R1) and 2019-2022 e-tron High-Voltage Battery Self-Discharge / Fire Risk - Recall 23V867 and e-tron Front (APA250) and Rear (AKA320) Drive Unit Internal Coolant Seal Failure - Isolation Faults and Motor Destruction and 2021 e-tron Charging Interruptions with Onboard-Charger Software 0070 - Diagnosis Required. Prospective buyers should inspect for these issues and factor potential repair costs into their purchase decision. Regular maintenance following the manufacturer's schedule helps prevent many common problems.
Repair costs for known Audi e-tron issues range from $0 to $9,000, depending on the specific problem and whether you choose DIY or professional repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.
Audi TSB 2067941/3 covers a rare cooling-system leak on specified legacy e-tron variants. At very low temperatures, the elastomer in coolant valve N632 can allow a minor leak when valve part 4KE963375K is installed. Audi lists visible coolant under the vehicle, a coolant warning,… Severity: high.
The e-tron CCS charging port experiences actuator and communication failures preventing DC fast charging. The charging port door mechanism and locking pin can also malfunction in cold weather. Repairs typically run $600-$2,000. Severity: high.
A fastener that joins the brake pedal input rod to the actuator rod (pushrod) of the electromechanical brake booster may have been assembled without the correct torque at the supplier. Over time the screw joint can loosen and the pedal can fully separate from the booster, at whic… Repairs typically run $0-$0. Severity: high.
The portable 'e-tron compact' charging cable supplied with the vehicle can draw the maximum current its plug adapter allows without verifying that the household circuit and receptacle can sustain it. When used on a 220V/240V outlet at the 100% charge-current setting, the outlet,… Repairs typically run $0-$0. Severity: high.
Continental notified Audi that a production deviation left the rotor and shaft inside the electromechanical brake pressure unit (brake booster) welded below specification. Under a hard braking event the weld can fail and the rotor and shaft separate, which cuts the electric boost… Repairs typically run $0-$0. Severity: high.
NHTSA recall 23V867 / Audi 93U9 and 93V2 covers certain 2019-2022 e-tron quattro and 2020-2022 e-tron Sportback quattro vehicles with potentially affected LG E61V high-voltage battery modules. A critical self-discharge condition can lead to thermal overload, smoke or fire. Audi’s… Severity: high.
The e-tron's asynchronous drive units use a silicon-carbide mechanical face seal to separate the water/glycol cooling circuit from the stator cavity and reduction gearbox. That seal does not tolerate the thermal cycling, rapid speed transients and reverse rotation of EV duty, and… Repairs typically run $2,800-$9,000. Severity: high.
Audi TSB 2061788/2 covers model-year 2021 e-tron quattro and e-tron Sportback vehicles with specified AC/DC charging interruptions, charging-flap operation problems, or an app request for auxiliary heating that does not pre-heat the vehicle when matching DTCs are stored in high-v… Severity: high.
The e-tron infotainment and vehicle management software experiences OTA update failures, screen freezes, and connectivity issues. Some updates have caused temporary range estimation errors and charging behavior changes. Repairs typically run $0-$300. Severity: medium.
The e-tron's 12V AGM auxiliary battery powers everything the driver touches before the high-voltage system wakes: door locks, the MMI, the gateway and the HV contactor circuit. The DC-DC converter only tops the 12V up while the vehicle is awake, and the high-voltage pack stops su… Repairs typically run $250-$800. Severity: medium.
Audi TSB 2059363/5 covers a legacy e-tron air-suspension malfunction when suspension controller J775 stores C1260F0 for no communication with compressor-control unit J1135 or U112100 with symptom code 262400 for a missing message. This is an electrical communication path; the bul… Severity: medium.
The MMI infotainment main unit can suffer internal damage during the vehicle shutdown sequence. Once damaged, the unit no longer renders the rearview camera image, so selecting reverse produces a blank or missing backup-camera view - a Federal Motor Vehicle Safety Standard 111 no… Repairs typically run $0-$0. Severity: medium.
On e-tron and e-tron Sportback vehicles ordered with the optional virtual exterior mirrors, the camera pod replaces the glass mirror and feeds an OLED display in the door card. Two distinct failures recur. First, wiring in the power-folding mechanism can be pinched or broken by r… Repairs typically run $900-$2,200. Severity: medium.
The automatic locking retractor (ALR) mode in the affected rear seat belts can switch itself off prematurely. ALR is the mode a parent engages by pulling the belt all the way out to cinch a forward-facing child restraint tight; if it deactivates early, the belt reverts to free-sp… Repairs typically run $0-$0. Severity: medium.
Two separate causes produce the same owner complaint - the e-tron will not hold its rated 150 kW DC charge rate. First, the pack must be near 25-30 degrees C to accept full current, and the e-tron only preconditions the battery when a DC charger is set as the active navigation de… Repairs typically run $0-$0. Severity: low.
Content on this page was compiled with AI assistance using NHTSA complaints, TSBs, owner reports, and public automotive data. While we strive for accuracy, this information may contain errors. Always verify repair procedures and specifications with your vehicle's service manual or a qualified mechanic.