In the sports sedan tug-of-war among Audi, BMW and Mercedes-Benz, the A4 now prevails over its peers. Sports sedans often fall short of expectations, being neither sporty nor luxurious, or prove unreliable. The A4 gets all of these things right, which is why it jumps to the top of this class in our rankings.
Alerts
There are 2 recalls on this vehicle. Learn More.

Reliability

We expect the 2021 A4 will be much more reliable than the average new car. This prediction is based on data from 2018 and 2019 models. Select the used car model year to see reported issues with those similar past models.

Predicted Reliability
The 2021 Audi A4 has been recalled 2 times by NHTSA. View Recalls
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Worse Better
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Overall Reliability Verdict
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
POTENTIAL TROUBLE SPOTS
Engine Major
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
Engine Minor
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
Engine Cooling
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
Transmission Major
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
Transmission Minor
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
Drive System
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
Fuel System
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
Electric System
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
Climate System
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
Suspension
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
Brakes
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
Exhaust
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
Paint/Trim
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
Body Integrity
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
Body Hardware
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
Power Equipment
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
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 about 329,000 vehicles, our reliability history charts give you a rundown on how 2000 through 2020 vehicles are holding up in 17 potential trouble spots, ranging from the engine, transmission, and brakes to power equipment and the electrical system. 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.

Learn more about car Reliability.

Owner Reported Trouble Spots

No Data Available

Compare New Models

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For this Rating, we averaged a model’s Overall Reliability for the newest three years, provided the vehicle did not change significantly in that time and hasn’t been redesigned for 2020. We include a prediction for a model that is new or has been redesigned, based on its reliability history or the manufacturer’s track record.
Recalls
PROVIDED BY
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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