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    Audi A4

    EPA MPG: 27 mpg

    RECALL ALERT:
    There are 4 recalls on this vehicle. Learn More.

    Reliability

    Overall Reliability

    We expect the 2025 A4 will be more reliable than the average new car. This prediction is based on data from 2023 model and the Audi brand score.

    The 2021 Audi A4 has been recalled 4 times by NHTSA. View Recalls
    Most Common Trouble Spots
    Common Trouble Spot
    Common Trouble Spot

    Owner Reported Trouble Spots

    The Reliability score is based on our latest subscriber survey of 2021 Audi A4 owners. The owner comments describe problems respondents experienced with this vehicle.

    In-car Electronics

    Infotainment system (audio, GPS, phone), rear entertainment system, backup or other camera/sensors, head-up display.

    What Owners Say

    Display screen freezes up

    "When I first got the car the different systems would freeze. Id have to turn the car off and then back on to get it to reboot. To this day the lane assist still will shut off and fail every time I drive the car"

    Anonymous, (2021 Audi A4 2.0T 2.0-L 4 Cyl turbo)
    Display screen goes blank

    "Occasionally the system goes into some loading problem, will not load. Occurs very rarely but frustrating. On a regular basis, the Sirius XM radio will simply quite, occurs only once early in a drive"

    Anonymous, NC (2021 Audi A4 Ultra 2.0-L 4 Cyl turbo)
    Other in-car electronics problem

    "The garage door opener system is very unreliable. There is a very limited window where the car needs to be located in order for it to work. In addition, you need to be careful and press the garage door opener down for several seconds in order for the signal to go through and work, you can't just tap it."

    Anonymous, GA (2021 Audi A4 2.0T 2.0-L 4 Cyl turbo)
    Phone pairing (e.g., Bluetooth)

    "Phone does not reliably connect to the car's display system. Sometimes you'll get a black screen and have to switch off the wifi connection to reset the connection. Sometimes it just takes forever. Switching back and forth from Carplay to the radio will cause the audio to turn off, stop or start playing something you didn't intend to play."

    Anonymous, GA (2021 Audi A4 2.0T 2.0-L 4 Cyl turbo)
    Speakers

    "Speaker blew out within a few months of purchasing the car, I have the top of the line Bang and Olufsen system with 19 speakers"

    Anonymous, (2021 Audi A4 2.0T 2.0-L 4 Cyl turbo)

    Body Hardware

    Windows, locks and latches, doors or sliding doors, tailgate, trunk or hatch, mirrors, seat controls (power or manual), seat belts, sunroof, convertible top, glass defect.

    What Owners Say

    Seat controls - power

    "Lumbar support broke three times, and the dealership informed me after the second repair was completed that they would be unable to repair it under warranty another time."

    Anonymous, NY (2021 Audi A4 2.0T 2.0-L 4 Cyl turbo)

    Drive System

    Driveshaft or axle, CV joint, differential, transfer case, four-wheel-drive/all-wheel-drive components, driveline vibration, electrical failure, traction control, electronic stability control.

    What Owners Say

    Differential

    "Center differential required replacement do to vibration"

    Anonymous, NC (2021 Audi A4 Ultra 2.0-L 4 Cyl turbo)

    Engine Electrical

    Alternator, starter, hybrid battery replacement, hybrid battery related systems, regular battery, battery cables, engine harness, coil, ignition switch, electronic ignition, spark plugs and wires failure, auto stop/start.

    Electrical Accessories

    Cruise control, clock, warning lights, body control module, keyless entry, wiper motor or washer, tire pressure monitor, interior or exterior lights, horn, gauges, 12V power plug, USB ports, alarm or security system, remote engine start, heated or cooled seats, heated steering wheel, headlights, automatic headlights, automatic wipers, wireless charging pad.

    Brakes

    Premature pad/rotor wear, pulsation or vibration, antilock system, parking brake, master cylinder, calipers, squeaking, brake failure, regenerative braking.

    Suspension/Steering

    Shocks or struts, ball joints, tie rods, wheel bearings, alignment, steering linkage (includes rack and pinion), power steering (pumps and hoses, leaks), wheel balance, springs or torsion bars, bushings, electronic or air suspension.

    Climate System

    AC compressor, blower (fan) motor, condenser, evaporator, heater system, automatic climate system, electrical failure, refrigerant leakage.

    Engine Major

    Engine rebuild or replacement, cylinder head, head gasket, turbocharger or supercharger, timing chain or belt.

    Exhaust

    Muffler, pipes, catalytic converter, exhaust manifold, heat shields, leaks.

    Transmission Major

    Transmission rebuild or replacement, torque converter, premature clutch replacement.

    Transmission Minor

    Gear selector and linkage, transmission computer, transmission sensor or solenoid, clutch adjustment, rough shifting, slipping transmission, leaks.

    Noises/Leaks

    Squeaks, rattles, wind noises, seals and/or weather stripping, air and water leaks.

    Engine Minor

    Accessory belts and pulleys, engine computer, engine mounts, engine knock or ping, fuel leaks, oil leaks.

    Paint/Trim

    Paint (fading, chalking, peeling, or cracking), loose interior or exterior trim or moldings, rust.

    Engine Cooling

    Radiator, cooling fan, water pump, thermostat, antifreeze leaks, overheating.

    Fuel System/Emissions

    Sensors (O₂, or oxygen, sensor), emission-control devices (includes EGR), fuel-injection system, fuel gauge/sender, fuel pump, problems filling up the tank.

    2021 Sedans & Hatchbacks Reliability

    This Car
    vs. Similar Cars

    Audi vs. Other New Car Brands Reliability

    Reliability History
    * Redesign year
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    Overall Reliability Verdict
    NA
    NA
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    NA
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    POTENTIAL TROUBLE SPOTS
    Powertrain
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    Engine Major
    NA
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    Engine Minor
    NA
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    Engine Cooling
    NA
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    Engine Electrical
    NA
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    Transmission Major
    NA
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    Transmission Minor
    NA
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    Drive System
    NA
    NA
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    NA
    NA
    NA
    NA
    NA
    NA
    NA
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    NA
    NA
    NA
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    Fuel System/Emissions
    NA
    NA
    NA
    NA
    NA
    NA
    NA
    NA
    NA
    NA
    NA
    NA
    NA
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    Exhaust
    NA
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    Suspension/Steering
    NA
    NA
    NA
    NA
    NA
    NA
    NA
    NA
    NA
    NA
    NA
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    Brakes
    NA
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    NA
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    NA
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    Climate System
    NA
    NA
    NA
    NA
    NA
    NA
    NA
    NA
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    Build Quality
    NA
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    Electrical Accessories
    NA
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    Body Hardware
    NA
    NA
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    NA
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    NA
    NA
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    NA
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    NA
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    Paint/Trim
    NA
    NA
    NA
    NA
    NA
    NA
    NA
    NA
    NA
    NA
    NA
    NA
    NA
    NA
    NA
    NA
    NA
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    Noises/Leaks
    NA
    NA
    NA
    NA
    NA
    NA
    NA
    NA
    NA
    NA
    NA
    NA
    NA
    NA
    NA
    NA
    NA
    NA
    In-car Electronics
    NA
    NA
    NA
    NA
    NA
    NA
    NA
    NA
    NA
    NA
    NA
    NA
    NA
    NA
    NA
    NA
    NA
    NA
    Reliability indicates how models have performed in the past, providing the basis for predicting how the vehicles will hold up in the year ahead. These charts provide the most comprehensive reliability information available to consumers. Based on information received from our latest subscriber survey for over 300,000 vehicles, our reliability history charts give you a rundown on how 2000 through 2024 vehicles are holding up in 20 potential trouble spots, ranging from the engine, transmission, electric motor, EV charging, and brakes to power equipment and the electrical accessories. NA indicates that we did not receive a large enough sample size to provide data for a specific year. An X indicates that the vehicle was not manufactured for a specific year.
    Recalls
    PROVIDED BY
    BACK OVER PREVENTION
    Oct 05, 2022
    A blank rearview camera display can reduce the driver's rear visibility, increasing the risk of a crash.
    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."
    What should you do:
    Dealers will update the infotainment unit software, free of charge. Owner notification letters were mailed October 25, 2022. Owners may contact Audi's customer service at 1-800-253-2834. Volkswagen's number for this recall is 91DZ.
    For more information:
    Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.nhtsa.gov.
    NHTSA CAMPAIGN ID Number: 22V742000
    Potential Number of Units Affected: 170296
    SUSPENSION, TIRES
    Jan 26, 2022
    Rear axle misalignment may cause premature or uneven tire wear, increasing the risk of a crash.
    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.
    What should you do:
    Dealers will inspect the rear axle, adjust the alignment as necessary, and replace any prematurely or unevenly worn tires, free of charge. Owner notification letters were mailed March 3, 2022. Owners may contact Audi customer service at 1-800-253-2834. Audi's number for this recall is 42L5.
    For more information:
    Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.nhtsa.gov.
    NHTSA CAMPAIGN ID Number: 22V034000
    Potential Number of Units Affected: 31058
    SEAT BELTS
    Aug 05, 2021
    An unsecured child restraint system can increase the risk of injury during a crash.
    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."
    What should you do:
    Dealers will inspect, and replace as necessary, the middle-rear seat belt assemblies, free of charge. Owner notification letters were mailed August 27, 2021. Owners may contact Volkswagen customer service at 1-800-893-5298 and Audi customer service at 1-800-253-2834. Volkswagen's numbers for this recall are 69CR (VW) and 69CS (Audi).
    For more information:
    Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.nhtsa.gov.
    NHTSA CAMPAIGN ID Number: 21V606000
    Potential Number of Units Affected: 45496
    SUSPENSION
    Apr 26, 2021
    A broken lock nut may misalign the rear axle, causing a loss of control and increasing the risk of a crash.
    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.
    What should you do:
    Dealers will replace the lock nuts and, if necessary, the associated bolts, free of charge. Owner notification letters were mailed June 4, 2021. Owners may contact Audi customer service at 1-800-253-2834. Audi's number for this recall is 42L1.
    For more information:
    Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov.
    NHTSA CAMPAIGN ID Number: 21V295000
    Potential Number of Units Affected: 40993
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