{"id":"2021_audi_a4","make":"Audi","make_slug":"audi","model":"A4","model_slug":"a4","year":2021,"url":"/audi/a4/2021/","pts":["hev"],"configs":[{"id":43342,"model":"A4 quattro","pt":"hev","drive":"All-Wheel Drive","trany":"Automatic (AM-S7)","cyl":4,"displ":2.0,"eng":"SIDI; Mild Hybrid","turbo":true,"super":false,"start_stop":true,"city":25,"hwy":34,"comb":28,"cityA":0,"hwyA":0,"combA":0,"kwh100":null,"range":null,"range_city":null,"range_hwy":null,"erange":null,"phev_comb":null,"charge240":null,"charge240b":null,"charger":"","charger_b":"","motor":"40V Li-Ion","fuel":"Premium","vclass":"Compact Cars","co2":311,"fe_score":6,"ghg_score":6,"fuel_cost":2750,"save_spend":-2500,"guzzler":false,"mfr_code":"VGA","modified":"Mon Apr 26 00:00:00 EDT 2021"},{"id":43239,"model":"A4 S line quattro","pt":"hev","drive":"All-Wheel Drive","trany":"Automatic (AM-S7)","cyl":4,"displ":2.0,"eng":"SIDI; Mild Hybrid","turbo":true,"super":false,"start_stop":true,"city":24,"hwy":31,"comb":27,"cityA":0,"hwyA":0,"combA":0,"kwh100":null,"range":null,"range_city":null,"range_hwy":null,"erange":null,"phev_comb":null,"charge240":null,"charge240b":null,"charger":"","charger_b":"","motor":"40V Li-Ion","fuel":"Premium","vclass":"Compact Cars","co2":331,"fe_score":6,"ghg_score":6,"fuel_cost":2850,"save_spend":-3000,"guzzler":false,"mfr_code":"VGA","modified":"Mon Jul 26 00:00:00 EDT 2021"},{"id":43261,"model":"A4 allroad quattro","pt":"hev","drive":"All-Wheel Drive","trany":"Automatic (AM-S7)","cyl":4,"displ":2.0,"eng":"SIDI; Mild Hybrid","turbo":true,"super":false,"start_stop":true,"city":24,"hwy":30,"comb":26,"cityA":0,"hwyA":0,"combA":0,"kwh100":null,"range":null,"range_city":null,"range_hwy":null,"erange":null,"phev_comb":null,"charge240":null,"charge240b":null,"charger":"","charger_b":"","motor":"40V Li-Ion","fuel":"Premium","vclass":"Small Station Wagons","co2":335,"fe_score":5,"ghg_score":5,"fuel_cost":3000,"save_spend":-3750,"guzzler":false,"mfr_code":"VGA","modified":"Mon Jul 26 00:00:00 EDT 2021"}],"vclass":"Compact Cars","segment":"Compact car","epa_certified":true,"recalls":[{"campaign":"22V742000","component":"BACK OVER PREVENTION:DISPLAY FUNCTION","mfr":"Volkswagen Group of America, Inc.","reported":"2022-10-05","owner_notified":"2022-10-25","units":170296,"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.\"","consequence":"A blank rearview camera display can reduce the driver's rear visibility, increasing the risk of a crash.","remedy":"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.","notes":"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.","park_outside":false,"do_not_drive":false,"mfr_campaign":"91DZ","initiated_by":"MFR","variants":[],"severity":"minor"},{"campaign":"22V034000","component":"SUSPENSION:REAR:AXLE:NON-POWERED AXLE ASSEMBLY","mfr":"Volkswagen Group of America, Inc.","reported":"2022-01-26","owner_notified":"2022-03-03","units":31058,"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.","consequence":"Rear axle misalignment may cause premature or uneven tire wear, increasing the risk of a crash.","remedy":"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.","notes":"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.","park_outside":false,"do_not_drive":false,"mfr_campaign":"42L5","initiated_by":"MFR","variants":[],"severity":"high"},{"campaign":"21V606000","component":"SEAT BELTS","mfr":"Volkswagen Group of America, Inc.","reported":"2021-08-05","owner_notified":"2021-08-27","units":45496,"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.\"","consequence":"An unsecured child restraint system can increase the risk of injury during a crash.","remedy":"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).","notes":"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.","park_outside":false,"do_not_drive":false,"mfr_campaign":"69CR, 69CS","initiated_by":"MFR","variants":[],"severity":"high"},{"campaign":"21V295000","component":"SUSPENSION:REAR:AXLE:NON-POWERED AXLE ASSEMBLY","mfr":"Volkswagen Group of America, Inc.","reported":"2021-04-26","owner_notified":"2021-06-04","units":40993,"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.","consequence":"A broken lock nut may misalign the rear axle, causing a loss of control and increasing the risk of a crash.","remedy":"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.","notes":"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.","park_outside":false,"do_not_drive":false,"mfr_campaign":"42L1","initiated_by":"MFR","variants":[],"severity":"high"}],"recall_count":4,"critical_count":0,"park_outside":false,"do_not_drive":false,"score":73,"grade":"C","complaints":{"count":12,"crash":3,"fire":0,"injured":1,"deaths":0,"comps":[["Unspecified",3],["Electrical System",3],["Vehicle Speed Control",2],["Suspension",2],["Power Train",2],["Lane Departure",2]],"by_year":{"2021":3,"2022":1,"2024":1,"2025":7},"excerpts":[["2025-10-08","Electrical System","The instrument cluster has stop working. Have to monitore vehicle information, Mileage, service, Safty notifications and general vehicle information from the Audi app."],["2025-08-31","Tires","Tires are original equipment. Only 19,000 miles on them. Was told all 4 tires have belt shifts and hop some. Suggested they should be replaced. These tires were great when new but you could tell from driving they were degrading. I'm [XXX] and never had an issue with tires this new. The belt shifting could be a manufact\u2026"],["2025-08-16","Power Train","I am writing to report a persistent issue with my 2021 Audi A4, VIN [XXX] . I have been experiencing a noticeable vibration, humming, and shuddering sensation that occurs specifically when turning at slow speeds (e.g., in a parking lot or when making a tight turn at an intersection). This issue has been diagnosed at a \u2026"]]},"investigations":[],"ncap":[{"desc":"4 DR AWD","overall":5,"frontal":4,"side":5,"rollover":5,"rollover_risk":0.099,"seats":5,"fcw":"Standard","ldw":"Standard","aeb":"No","esc":"","backup_cam":"","variant":null},{"desc":"SW AWD","overall":null,"frontal":null,"side":5,"rollover":null,"rollover_risk":0.099,"seats":5,"fcw":"Standard","ldw":"Standard","aeb":"No","esc":"","backup_cam":"","variant":null}],"popularity":999,"headline":{"range":null,"mpg":28,"ncap":5,"complaints":12},"presskit_trims":[],"generated_at":"2026-09-11 06:27 UTC","sources":["EPA fueleconomy.gov","NHTSA recalls","NHTSA complaints","NHTSA NCAP","NHTSA investigations"]}