2021 Audi e-tron Common Problems & Defect Telemetry
Authoritative defect intelligence synthesized from 36 verified NHTSA owner complaints, 9 federal safety recalls, and interquartile failure mileage telemetry.
The 2021 Audi e-tron receives a 3.8/10 MazicBay Reliability Index based on 36 verified NHTSA federal complaints and 9 safety recalls. The primary reported failure mode is Electrical Parasitic Drain, Infotainment & Harness Reports with a median failure point at 19,000 miles (IQR: 11,445 – 20,021 mi). Out-of-warranty repairs benchmark at $280 – $850 .
36 complaints / 10k sold
Verified US federal records
Crash, fire & stall audit
9 Active / Free Remedies
2021 e-tron Failure Distribution by Vehicle Subsystem
Top Reported Problem Clusters (6)
Electrical Parasitic Drain, Infotainment & Harness Reports
- Unexplained battery drain after sitting overnight
- Infotainment display / instrument cluster blackouts
- Accessory malfunction / alternator fault warnings
“I own a 2021 Audi e-tron with approximately 58000 miles. Beginning in March 2026, the vehicle developed intermittent Virtual Cockpit/instrument-cluster problems with blank display. I reported the condition to Audi dealer of Princeton NJ. The vehicle subsequently experienced tw...”
“Moisture build-up in the high-voltage electrical system through a faulty seal on the charging socket, which can cause a short circuit and significantly increase the risk of a vehicle fire. If you get a warning light saying "electrical system: fault," you should stop driving im...”
“What component or system failed or malfunctioned, and is it available for inspection upon request? - While on highway the vehicle loosed all Power indicating Electrical Malfunction How was your safety or the safety of others put at risk? It happened on I-35 Freeway twice putti...”
Transmission Hesitation, Hard Shifting & Slipping Reports
- Hard gear shifts / delayed engagement into Drive/Reverse
- Transmission shudder / jerking under acceleration
- Transmission slipping between gears
“Moisture build-up in the high-voltage electrical system through a faulty seal on the charging socket, which can cause a short circuit and significantly increase the risk of a vehicle fire. If you get a warning light saying "electrical system: fault," you should stop driving im...”
“Twice in the span of 3 months my 2021 Audi eTron with less than 25K miles shutdown while driving with an error message "Electrical system: malfunction! Safely stop vehicle." At this point the drive train is completely disengaged and all that can be done is coast to a stop with...”
“Repeated sudden loss of forward propulsion power associated with multiple warning messages about drive system and electrical system malfunction. Because the problem is sudden and the car has no forward propulsion power the car is left blocking traffic with occupants still insi...”
Engine Stalling, Oil Consumption & Cooling Defect Reports
- Engine sudden stall / hesitation while driving
- Abnormal oil burning / consumption
- Check Engine Light (MIL) flashing
- Engine overheating / coolant loss
“What component or system failed or malfunctioned, and is it available for inspection upon request? - While on highway the vehicle loosed all Power indicating Electrical Malfunction How was your safety or the safety of others put at risk? It happened on I-35 Freeway twice putti...”
“This issue occurred with my Audi a year after purchasing it and the vehicle had 19,282 miles on it at the time. I received an "Electrical System Malfunction - Please contact service" error message (in yellow) on my 2021 Audi etron vehicle display. The message was displayed for...”
“Twice in the span of 3 months my 2021 Audi eTron with less than 25K miles shutdown while driving with an error message "Electrical system: malfunction! Safely stop vehicle." At this point the drive train is completely disengaged and all that can be done is coast to a stop with...”
Service Brakes, ABS Actuator & Master Cylinder Reports
- Spongy or hard brake pedal travel
- ABS / Brake warning light illuminated
- Extended stopping distance / pedal vibration
“Moisture build-up in the high-voltage electrical system through a faulty seal on the charging socket, which can cause a short circuit and significantly increase the risk of a vehicle fire. If you get a warning light saying "electrical system: fault," you should stop driving im...”
“On five separate occasions across two separate drivers, we have experienced a partial brake failure in this vehicle. We strongly believe this to be a software defect and not a mechanical fault. On the e-Tron, the first portion of the brake pedal swing typically activates the r...”
“My Audi E-tron has a consistant problem with the MMI (Multi Media Interface, the main computer for the car). When I am driving, all the screens will go blank, I cannot see my speed, I have no HVAC controls, I am basically driving blind. To fix the issue, I have to pull over, t...”
Electric Power Steering Assist & Suspension Noise Reports
- Sudden loss of electric power steering assist
- Steering wheel pull or highway wander
- Clunking / knocking noise over bumps
“Car roof leak. Water tracking inside the car cabin and potentially into the electrical system of the vehicle. This is an electronic car and water inside the car due to a car roof leak is unsafe and can potentially cause a fire.”
“Had multiple instances as I approached intersection stops of the vehicle suddenly jerking and the drive train becoming disengaged. The car maintained electrical power and had working steering and braking as I coasted to a stop. This occurred 5 times over the course of 3 miles ...”
Airbag Occupant Detection & Inflator Defect Reports
- SRS Airbag warning lamp illuminated
- Passenger occupant classification sensor failure
- Seat belt retractor lockup
“Twice in the span of 3 months my 2021 Audi eTron with less than 25K miles shutdown while driving with an error message "Electrical system: malfunction! Safely stop vehicle." At this point the drive train is completely disengaged and all that can be done is coast to a stop with...”
“Repeated sudden loss of forward propulsion power associated with multiple warning messages about drive system and electrical system malfunction. Because the problem is sudden and the car has no forward propulsion power the car is left blocking traffic with occupants still insi...”
Official NHTSA Safety Recalls (9)
SEAT BELTS:REAR/OTHER:RETRACTOR
Summary: 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
Summary: 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.
STRUCTURE:INTERIOR PANELS:DASHBOARD
Summary: Volkswagen Group of America, Inc. (Volkswagen) is recalling certain 2021 Audi E-Tron Quattro and E-Tron Sportback Quattro vehicles. The right hinge pin for the glove box cover may not be properly secured, allowing the glove box lid trim to interfere with the knee air bag during deployment.
SERVICE BRAKES, HYDRAULIC
Summary: Volkswagen Group of America, Inc. (Volkswagen) is recalling certain 2021 E-Tron Quattro and 2020-2021 Audi E-Tron Sportback Quattro vehicles. An improperly welded rotor and shaft may separate within the integrated brake system.
BACK OVER PREVENTION:DISPLAY FUNCTION
Summary: Volkswagen Group of America, Inc. (Volkswagen) is recalling certain 2021 Audi A8, RS7, RS6 Avant, RS5 Sportback, RS5 Coupe, Q8, Q7, Q5 Sportback, S4 Sedan, Q5, A7, A6, A6 Allroad, A5 Sportback, A5 Coupe, A5 Cabrioleet, A4 Sedan, A4 Allroad, E-Tron Sportback Quattro, SQ7, S5 Cabriolet, E-Tron Quattro, SQ8, SQ5 Sportback, SQ5, S8, S7, S6 Sedan, S5 Sportback, S5 Coupe, 2022 E-Tron GT, and 2021-2022 RSQ8 vehicles. Due to a software issue, a blank or black screen may be displayed instead of the rearview camera image when the vehicle is placed in reverse gear. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 111, "Rear Visibility."
EQUIPMENT:ELECTRICAL:INFOTAINMENT:VIDEO (TOUCH)SCREEN/MONITOR/UNIT
Summary: Volkswagen Group of America, Inc. (Audi) is recalling certain 2021-2022 AUDI A8, A6 Allroad, E-TRON Quattro, 2022 S3, RSQ8, RS7, RS6 Avant, Q8, Q7, Q3, E-TRON Sportback Quattro, S5 Cabriolet, E-TRON GT, S5 Sportback, A7, A6, A5 Sportback, A5 Cabriolet, A4, A4 Allroad, A3, S8, SQ7, SQ8, S6, and S4 vehicles. The infotainment main unit may become damaged internally when the vehicle is shut off, resulting in an inoperative rearview camera display the next time the vehicle is started. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 111, "Rear Visibility."
ELECTRICAL SYSTEM:PROPULSION SYSTEM:CHARGING:CABLE/CORD:ONBOARD
Summary: 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.
ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY THERMAL:MANAGEMENT:SOFTWARE
Summary: Volkswagen Group of America, Inc. (Audi) is recalling certain 2020-2022 E-Tron Sportback Quattro and 2019-2022 E-Tron Quattro vehicles. Certain high-voltage battery modules may overheat.
BACK OVER PREVENTION: SENSING SYSTEM: CAMERA
Summary: 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."
Pre-Purchase Inspection Checklist for 2021 Audi e-tron
Before purchasing a used 2021 Audi e-tron, perform the following targeted inspections based on reported federal defect patterns:
Scan the OBD-II port under the dash for pending freeze-frame codes (e.g. P0300 misfires, P0087 fuel rail pressure, P0420 catalytic efficiency).
Test vehicle at low-speed stop-and-go and highway merges. Check for delayed reverse engagement or gear shift shudder between 2nd and 3rd gears.
Verify that all 9 NHTSA safety recall campaigns have been performed by an authorized dealership using the VIN.
Ensure the instrument cluster, center screen, and auxiliary charging ports operate with stable 12.0V–14.4V alternator voltage.
Defect & Reliability Q&A: 2021 Audi e-tron
Is the 2021 Audi e-tron a reliable used car?
The 2021 Audi e-tron earns a 3.8/10 MazicBay Reliability Index based on 36 federal owner reports. Vehicles maintained under factory service schedules exhibit strong longevity past 150,000 miles.
What is the most frequent defect reported on the 2021 Audi e-tron?
The leading complaint category is Electrical Parasitic Drain, Infotainment & Harness Reports, with a median failure point around 19,000 miles (IQR: 11,445 – 20,021 mi).
Are there free recall repairs available for the 2021 Audi e-tron?
Yes, the NHTSA records 9 safety recall campaign(s) for this model year. All safety recalls are performed 100% free of charge by authorized franchise dealerships regardless of vehicle warranty status.