2021 Audi Q5 Common Problems & Defect Telemetry
Authoritative defect intelligence synthesized from 70 verified NHTSA owner complaints, 8 federal safety recalls, and interquartile failure mileage telemetry.
The 2021 Audi Q5 receives a 5.6/10 MazicBay Reliability Index based on 70 verified NHTSA federal complaints and 8 safety recalls. The primary reported failure mode is Electrical Parasitic Drain, Infotainment & Harness Reports with a median failure point at 6,000 miles (IQR: 5,750 – 12,372 mi). Out-of-warranty repairs benchmark at $280 – $850 .
12.1 complaints / 10k sold
Verified US federal records
Crash, fire & stall audit
8 Active / Free Remedies
Top Reported Problem Clusters (7)
Electrical Parasitic Drain, Infotainment & Harness Reports
- Unexplained battery drain after sitting overnight
- Infotainment display / instrument cluster blackouts
- Accessory malfunction / alternator fault warnings
“On 8/3/26, my 2021 Audi Q5 began throwing numerous different malfunction/error alerts and the engine turned off while driving after a bottle of water had partially spilled onto our backseat behind the drivers side. The vehicle was towed to a nearby mechanic who determined that...”
“If I have a sensor that will malfunction due to water then there should be a water indicator alert. My sunroof vent was blocked and water went into my trunk where the core module is. I had just come to a red light to turn on to a major highway and my car began to smell like fu...”
“The contact owns a 2021 Audi Q5. The contact stated that while driving at an undisclosed speed, several unknown warning lights illuminated, and the vehicle stalled. Additionally, the windows independently rolled up and down, and the engine seized. While attempting to start the...”
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
“On 8/3/26, my 2021 Audi Q5 began throwing numerous different malfunction/error alerts and the engine turned off while driving after a bottle of water had partially spilled onto our backseat behind the drivers side. The vehicle was towed to a nearby mechanic who determined that...”
“I was driving at highway speeds when a "Transmission Malfunction" warning appeared, and the vehicle lost the ability to accelerate. Once I was able to pull over and put the vehicle in Park, it completely lost the ability to engage Drive or Reverse, leaving me stranded. Importa...”
“If I have a sensor that will malfunction due to water then there should be a water indicator alert. My sunroof vent was blocked and water went into my trunk where the core module is. I had just come to a red light to turn on to a major highway and my car began to smell like fu...”
Transmission Hesitation, Hard Shifting & Slipping Reports
- Hard gear shifts / delayed engagement into Drive/Reverse
- Transmission shudder / jerking under acceleration
- Transmission slipping between gears
“On 8/3/26, my 2021 Audi Q5 began throwing numerous different malfunction/error alerts and the engine turned off while driving after a bottle of water had partially spilled onto our backseat behind the drivers side. The vehicle was towed to a nearby mechanic who determined that...”
“I was driving at highway speeds when a "Transmission Malfunction" warning appeared, and the vehicle lost the ability to accelerate. Once I was able to pull over and put the vehicle in Park, it completely lost the ability to engage Drive or Reverse, leaving me stranded. Importa...”
“The safety situation happened when my wife's car got stuck while driving at about 25-30 MPH in the middle of the road.Next day At the nearest Audi service center they found that water has gotten into the rear of the trunk and damaged the electronic module which caused the car ...”
Service Brakes, ABS Actuator & Master Cylinder Reports
- Spongy or hard brake pedal travel
- ABS / Brake warning light illuminated
- Extended stopping distance / pedal vibration
“I was driving down a regular road by my house, full sunshine, perfect road, nothing unusual. In fact, it was such a nice day, the sunroof was open and windows were down. My dog was in the back seat after just being picked up from grooming happily enjoying the day with his head...”
“I am submitting this complaint regarding a serious brake-related safety issue involving my Audi vehicle after recent brake service performed by an authorized Audi Meadowland dealership in ... . In December 2025, I brought my vehicle to an authorized Audi dealership for replace...”
“The Gateway control module failed in September 2025 on my 2021 Audi Q5. Vehicle error messages included the following failures: Cruise control, Parking brake, transmission, brakes, and steering, windows rolled down, seats moved, dash and MMI black followed by a sudden loss of ...”
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
“If I have a sensor that will malfunction due to water then there should be a water indicator alert. My sunroof vent was blocked and water went into my trunk where the core module is. I had just come to a red light to turn on to a major highway and my car began to smell like fu...”
“Following a rear collision repair at an authorized dealer collision center, multiple ADAS safety systems were not properly calibrated despite insurance payment and shop representations that repairs were complete. WHAT FAILED: Lane Change Assist, Peripheral Camera System, Side ...”
“The Gateway control module failed in September 2025 on my 2021 Audi Q5. Vehicle error messages included the following failures: Cruise control, Parking brake, transmission, brakes, and steering, windows rolled down, seats moved, dash and MMI black followed by a sudden loss of ...”
Airbag Occupant Detection & Inflator Defect Reports
- SRS Airbag warning lamp illuminated
- Passenger occupant classification sensor failure
- Seat belt retractor lockup
“I was driving down a regular road by my house, full sunshine, perfect road, nothing unusual. In fact, it was such a nice day, the sunroof was open and windows were down. My dog was in the back seat after just being picked up from grooming happily enjoying the day with his head...”
“I am submitting this complaint regarding a serious brake-related safety issue involving my Audi vehicle after recent brake service performed by an authorized Audi Meadowland dealership in ... . In December 2025, I brought my vehicle to an authorized Audi dealership for replace...”
“Gateway control module shutdown. After a rain storm vehicle had electrical issues such as rear light turning off, and engine start malfunction alarm on dashboard. To vehicle automatically stoping with no vehicle nearby, seat belt tightening and to engine seized while driving t...”
Fuel Pump Pressure Loss & Fuel Delivery Defect Reports
- Sudden loss of propulsion power at highway speeds
- Extended engine cranking / failure to restart
- Fuel odor near fuel tank / engine bay
“The contact owns a 2021 Audi Q5. The contact stated that after refueling the vehicle, she noticed that after driving several miles, the fuel gauge displayed that the vehicle was full. The contact then stated that the fuel gauge remained on full although her fuel tank was close...”
“2021 Audi Q5 parked (not running) in parking lot , outside temperature 95F, gasoline dripping from under right rear passenger area (approx 1/4-1/2 liter). Audi Service Center inspected and said the fuel pump needs replacing. Fuel system warning light had been yellow and gas ca...”
“TL* THE CONTACT WHO IS A CERTIFIED MECHANIC CALLED ON BEHALF OF A CUSTOMER WHO OWNS A 2021 AUDI Q5. THE CONTACT STATED THAT WHILE THE OWNER WAS DRIVING, THE VEHICLE RAN OVER A STRIP OF ALUMINUM THAT WAS LYING IN THE ROADWAY CAUSING THE FUEL TANK TO BE RIPPED OPEN. THE CONTACT ...”
Official NHTSA Safety Recalls (8)
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."
TIRES
Summary: Volkswagen Group of America, Inc. (Audi) is recalling certain 2019-2021 Audi A5 Sportback, RS5 Coupe, RS5 Sportback, S5 Sportback, 2020-2021 A4 Allroad, A4 Sedan, A5 Cabriolet, A5 Coupe, A6 Allroad, A6 Sedan, A7, A8, Q5, S4 Sedan, S5 Coupe, S5 Cabriolet, S6 Sedan, S7, S8, SQ5, 2021 Q5 Sportback, Q7, Q8, RS6 Avant, RS7, RSQ8, SQ5 Sportback, SQ7, and SQ8 vehicles. The rear axle alignment may not have been inspected after the repairs for Recall 21V-295 (42L1) were performed.
ELECTRICAL SYSTEM:BODY CONTROL MODULE/BCM
Summary: Volkswagen Group of America, Inc. (Audi) is recalling certain 2021-2022 Q5 Sportback, SQ5 Sportback, 2018-2022 Q5, and SQ5 vehicles. A liquid spill in the rear seat, or water ingress from an insufficient body seam underneath the vehicle may allow liquid to penetrate the gateway control module, causing it to shutdown.
SUSPENSION:REAR:AXLE:NON-POWERED AXLE ASSEMBLY
Summary: Volkswagen Group of America, Inc. (Audi) is recalling certain 2021 Q7, Q8, Q5 Sportback, SQ5 Sportback, RS6 Avant, RS7, RS Q8, 2020-2021 Audi S6 sedan, Q5, A8, S8, A7, A6 Allroad, A5 Cabriolet, A4 sedan, A4 Allroad, SQ5, S7, A6 sedan, S5 coupe, S4 sedan, S5 Cabriolet, A5 coupe, 2019-2021 RS5 coupe, A5 Sportback, S5 Sportback, RS5 Sportback vehicles. The lock nut on the trailing arm of the rear axle may break due to stress corrosion.
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."
ENGINE AND ENGINE COOLING:ENGINE:HARD PARTS INTERNAL/MECHANICAL
Summary: Volkswagen Group of America, Inc. (Volkswagen) is recalling certain 2021-2023 Audi Q5 Sportback, Q5, 2022-2023 Volkswagen Atlas FL, and Atlas Cross Sport vehicles. The engine connecting rod bearings may become damaged, which can result in engine failure.
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
Summary: Volkswagen Group of America, Inc. (Volkswagen) is recalling certain 2021-2024 Audi Q5, and 2022 A7 E Hybrid Electric PHEV vehicles. The high-voltage battery may overheat.
Pre-Purchase Inspection Checklist for 2021 Audi Q5
Before purchasing a used 2021 Audi Q5, 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 8 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 Q5
Is the 2021 Audi Q5 a reliable used car?
The 2021 Audi Q5 earns a 5.6/10 MazicBay Reliability Index based on 70 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 Q5?
The leading complaint category is Electrical Parasitic Drain, Infotainment & Harness Reports, with a median failure point around 6,000 miles (IQR: 5,750 – 12,372 mi).
Are there free recall repairs available for the 2021 Audi Q5?
Yes, the NHTSA records 8 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.