The 2021 Q7 is the second-gen MLB Evo platform with ZF 8-speed, and while relatively new, early examples are showing troubling signs of thermal management failures on the 3.0T V6 and some serious transmission cooler issues that can cascade into catastrophic damage if ignored.
Transmission Oil Cooler Failure Leading to Trans Contamination
Common · high severity
Typical onset: 40,000-80,000 mi
Symptoms: Transmission fluid appearing milky or brown (coolant mixing), Harsh shifting or slipping between gears, Transmission overheating warnings on dash, Coolant loss with no visible external leaks
Fix: Internal cooler in radiator fails, allowing coolant into trans fluid. Requires new radiator, full trans flush and filter, sometimes valve body replacement if contamination is severe. 6-10 hours labor depending on damage extent. Catch it early or you're rebuilding the transmission.
Estimated cost: $2,800-6,500
3.0T V6 Piston Ring and Cylinder Scoring
Occasional · high severity
Typical onset: 60,000-100,000 mi
Symptoms: Excessive oil consumption (1 qt per 1,000 mi or worse), Blue smoke on cold start or hard acceleration, Carbon buildup on intake valves causing rough idle, Loss of compression leading to misfires
Fix: Early EA839 3.0T engines have piston ring sealing issues exacerbated by direct injection carbon. Proper fix is engine-out, bore inspection, new pistons/rings, sometimes cylinders need honing or sleeving. 35-50 hours shop time for short block work. Some owners limp along with catch cans and frequent oil top-ups.
Estimated cost: $8,500-15,000
Rear Axle Differential Mount and Carrier Bearing Failure
Occasional · medium severity
Typical onset: 50,000-90,000 mi
Symptoms: Clunking from rear on acceleration or deceleration, Vibration at highway speeds that worsens over time, Whining or grinding noise from rear differential area, Visible fluid seepage around rear diff
Fix: Quattro system puts stress on rear carrier bearings and subframe mounts. Requires dropping rear subframe, replacing diff mounts, often carrier bearings and seals while you're in there. 8-12 hours labor. NHTSA flagged rear axle assemblies for a reason on this generation.
Estimated cost: $2,200-4,000
Fuel Pump Control Module and High-Pressure Pump Failures
Common · medium severity
Symptoms: Extended cranking before engine starts, Sudden loss of power or stalling at highway speed, Fuel pump whine audible in cabin, P0087 or P0093 fuel pressure codes
Fix: Continental HPFP and control module have high failure rates across VAG products this era. Recall covers some pump issues but not all. HPFP replacement is 3-4 hours (under intake manifold on V6), control module is 1.5 hours. Replace both if one fails to avoid comeback.
Estimated cost: $1,400-2,800
MMI Display and Camera System Malfunctions
Occasional · low severity
Symptoms: Backup camera shows black screen or pixelated image, MMI screen freezes or reboots randomly, Surround-view cameras not switching properly, Instrument cluster flickering or partial display
Fix: Software issues and actual hardware failures both plague the MIB 3 system. Recalls address some camera/display software, but modules themselves fail. Camera replacement is 1-2 hours per corner, MMI head unit is 4-6 hours due to dash disassembly. Always try software reflash first (warranty item if within range).
Estimated cost: $800-3,200
Transmission Mount Collapse (All Engines)
Common · low severity
Typical onset: 40,000-70,000 mi
Symptoms: Excessive vibration at idle in Drive, Clunk when shifting from Park to Drive, Drivetrain lurch during acceleration, Visible sagging of transmission on lift
Fix: The rubber in these hydraulic mounts degrades quickly, especially in hot climates. Two main mounts (front and rear) usually need replacement together. 2-3 hours labor, straightforward job but requires proper support of trans/transfer case during removal.
Estimated cost: $600-1,200
Owner tips
Check transmission fluid color every oil change — any hint of pink or milky means stop driving immediately and check the cooler
3.0T owners should monitor oil consumption religiously and consider an oil catch can install to slow carbon buildup
Extended warranty is almost mandatory on these — the piston/ring issue alone can total the repair value on a used example
Service records showing regular coolant flushes (not just top-offs) help prevent the cooler failures
Hard pass unless you're getting a screaming deal and have a $5K repair cushion — too many expensive grenades for a three-year-old vehicle, especially the trans cooler and piston ring issues that can appear without warning.
AI-assisted summary drawn from NHTSA recall data, our labor-times database, and platform knowledge. Not a substitute for a pre-purchase inspection on a specific vehicle.
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BACK OVER PREVENTION: SENSING SYSTEM: CAMERA · 25V900000
2025-12-19
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."
Consequence: A rearview image that does not display reduces the driver's view behind the vehicle, increasing the risk of a crash.
Remedy: Dealers will update the software, free of charge. Owner notification letters were mailed January 14, 2026. Owners may contact Audi customer service at 1-800-253-2834. Audi's number for this recall is 90TV. Vehicle Identification Numbers (VINs) involved in this recall became searchable on NHTSA.gov on December 23, 2025.
Volkswagen Group of America, Inc. (Audi) is recalling certain 2021 SQ8, A6 SEDAN, A7, A8, Q7, Q8, RS6 Avant, RS7, RSQ8, S6 SEDAN, S7, S8, A6 Allroad, and SQ7 vehicles. Due to a software error, the instrument panel display may fail.
Consequence: An instrument panel display that fails to show critical safety information, such as the speedometer or warning lights, increases the risk of a crash.
Remedy: Dealers will update the instrument panel module software, free of charge. Owner notification letters were mailed April 24, 2025. Owners may contact Audi customer service at 1-800-253-2834. Audi's number for this recall is 90VC.
BACK OVER PREVENTION:DISPLAY FUNCTION · 22V742000
2022-10-05
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.
Volkswagen Group of America, Inc. (Volkswagen) is recalling certain 2019-2021 Audi Q8, and 2020-2021 Audi Q7 vehicles. A component inside the fuel pump may break, causing the fuel pump to fail.
Consequence: Fuel pump failure can cause an engine stall, increasing the risk of a crash.
Remedy: Dealers will replace the fuel pump, free of charge. Owner notification letters were mailed December 22, 2022. Owners may contact Audi's customer service at 1-800-253-2834. Audi's number for this recall is 20DR.
TIRES · 22V034000
2022-01-26
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.
SEAT BELTS:REAR/OTHER:RETRACTOR · 21V606000
2021-08-05
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).
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.
AIR BAGS: AIR BAG/RESTRAINT CONTROL MODULE:SOFTWARE · 21V078000
2021-02-17
Volkswagen Group of America, Inc. (Audi) is recalling certain 2020-2021 Audi Q7 vehicles. The air bag control module may deploy the second stage of the front passenger air bag too quickly after the first stage when the seat is occupied by an unbelted child. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 208, "Occupant Crash Protection."
Consequence: During a crash necessitating the deployment of the passenger air bag, the second stage may deploy too quickly when a child is in the front passenger seat, increasing the risk of injury.
Remedy: Audi will notify owners, and dealers will update the air bag control module, free of charge. The recall began March 5, 2021. Owners can contact Audi customer service at 1-800-253-2834. Audi's number for this recall is 69BV.
ELECTRICAL SYSTEM · 20V749000
2020-12-02
Volkswagen Group of America, Inc. (Audi) is recalling certain 2021 Audi A6 Allroad, Q7, RS6 and RS7 vehicles. The electrical connector can detach from the door crash sensor in either of the front doors.
Consequence: A detached connector can delay the activation of the restraint systems, including the side air bag, curtain air bag and/or seat-belt pretensioners during a side impact crash, increasing the risk of injury.
Remedy: Audi will notify owners, and dealers will inspect, and as necessary, replace the crash sensors in both front doors, free of charge. The recall began December 23, 2020. Owners may contact Audi customer service at 1-800-253-2834. Audi's number for this recall is 69BM.
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