2021 Audi S6 Reliability Data: Problems & Recalls
No verdict The 2021 Audi S6 has 0 owner complaints logged with NHTSA but carries 10 recall campaigns, giving it a complaint index of 13 and a rank of 15 out of 17 model years. No verdict has been assigned to this year.
Based on NHTSA complaints per model-year, not a reliability rating. Methodology
YearToAvoid Scorecard
- Complaint Index
- 13/100
- #15 of 17 S6 years
- Verdict
- No verdict
- vs. other years of this model
- Complaints
- 0
- unique NHTSA reports
- Recalls
- 10
- distinct NHTSA campaigns
- Crashes
- 0
- reported in complaints
- Fires
- 0
- Injuries
- 0
- Top issue
- —
- NHTSA overall rating
- Not rated
- EPA combined MPG
- 22
- 18 city / 28 hwy
- Injuries / deaths
- 0 / 0
Top 2021 Audi S6 problems
Share of this year’s NHTSA complaints by component group. Groups with 15+ complaints have their own page.
No component data.
2021 Audi S6 recalls
10 NHTSA recall campaigns list this model year.
- NHTSA 25V900000Dec 19, 2025Collision Avoidance & Cameras356,894 vehicles
Back over prevention: sensing system: camera
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."
Risk: 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.
- NHTSA 25V201000Mar 31, 2025Electrical System44,387 vehicles
Electrical system:software
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.
Risk: 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.
- NHTSA 23V601000Aug 25, 2023Brakes7,499 vehicles
Service brakes, hydraulic:fluid
Volkswagen Group of America, Inc. (Audi) is recalling certain 2021 Audi S7, S6 Sedan, RS7, RS6 Avant, A6 Allroad, 2019-2021 A7, and A6 Sedan vehicles. An incorrectly labeled brake fluid cap may have been installed, which can result in the use of the wrong type of brake fluid.
Risk: Incorrect brake fluid can reduce braking ability and increase the risk of a crash.
Remedy: Dealers will inspect the brake fluid reservoir cap and, if necessary, replace it, free of charge. Owner notification letters are expected to be mailed October 17, 2023. Owners may contact Audi's customer service at 1-800-253-2834. Volkswagen's number for this recall is 47T9.
2021 Audi S6 fuel economy and fuel cost
- City
- 18 MPG
- Highway
- 28 MPG
- Combined
- 22 MPG
- Annual fuel cost (EPA)
- $3,650
- 15,000 mi/yr
- Fuel
- Premium
- Current regular gas
- $4.32/gal
- national avg.
EPA figures; median across configurations of this model year. Estimate your own cost with the fuel cost calculator.
2021 compared with other S6 years
Frequently asked questions
- Is the 2021 Audi S6 reliable?
- NHTSA lists 0 complaints for the 2021 Audi S6, and its complaint index of 13 is one of the lowest among the 17 model years with data. It does carry 10 recall campaigns, more than most other S6 years.
- Does the 2021 Audi S6 have recalls?
- Yes. NHTSA lists 10 recall campaigns for the 2021 Audi S6, covering electrical system issues, brakes, collision avoidance cameras, seat belts, and suspension components. None of these are do-not-drive recalls.
- What year Audi S6 should I avoid?
- Based on complaint index, the 2013, 2014, 2015, and 2016 Audi S6 are rated Avoid, with 2013 having the highest complaint index at 100. The 2017 S6 is rated Caution.
- How does the 2021 Audi S6 rank compared to other years?
- The 2021 S6 ranks 15th worst out of 17 model years for complaint index, meaning most other years have higher complaint rates. Its complaint index of 13 is well below years like 2013 (100) and 2014 (94).
- What is the fuel economy of the 2021 Audi S6?
- EPA rates the 2021 Audi S6 at 22 mpg combined, 18 mpg city and 28 mpg highway, with an estimated annual fuel cost of $3,650.