Recall 21V707000: Service Brakes, Hydraulic
Official campaign-level recall information with affected vehicle links and a VIN-first buyer check.
Reviewed June 2026 from NHTSA recall campaign records. Carchieve is independent and not affiliated with any vehicle manufacturer or government agency.
Recall summary
Volkswagen Group of America, Inc. (Audi) is recalling certain 2021 Audi E-Tron Quattro and E-Tron Sportback Quattro vehicles. Corrosion in the brake booster may cause the Anti-Lock Brake System (ABS), Electronic Stability Control (ESC), speedometer display, and brake assist to stop functioning.
Safety risk
A loss of braking assist, ABS, and ESC will increase the effort and distance required to stop, increasing the risk of a crash.
Recall remedy
Dealers will replace the brake booster, free of charge. Owner notification letters were mailed September 30, 2021. Owners may contact Audi customer service at 1-800-253-2834. Audi's number for this recall is 47R7.
What to compare next
After checking this safety campaign, compare the same vehicle against manufacturer service bulletins, model-level owner complaint patterns and the used-car recall checklist.
Frequently asked questions
What is recall campaign 21V707000?
Volkswagen Group of America, Inc. (Audi) is recalling certain 2021 Audi E-Tron Quattro and E-Tron Sportback Quattro vehicles. Corrosion in the brake booster may cause the Anti-Lock Brake System (ABS), Electronic Stability Control (ESC), speedometer display, and brake assist to stop functioning.
How do I know if this recall applies to my car?
Use the exact 17-character VIN. A campaign can affect only certain production ranges, trims or equipment configurations.
Are recall repairs free?
Safety recall remedies are generally performed by franchised dealers at no charge when the exact VIN is affected and the remedy is available.
Check the exact VIN before you buy
Model-level pages show public safety patterns. A full VIN report helps confirm the exact vehicle, decoded specs, recall applicability and buyer checks.
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