2021 Audi S6 Report
Known issues, recalls, running costs, and what to check before you buy.

Overall Score
Key Takeaways
- The 2021 Audi S6 has a significant number of recalls (57), with a notable focus on safety systems such as airbags and seat belts.
- While owner complaints are zero, the high recall volume indicates potential for early-life issues that require verification of manufacturer remedies.
- The 2.9L V6 engine requires premium fuel and produces 444 horsepower, offering strong performance for its class.
- Fuel economy is rated at 22 MPG combined, which is average for a performance sedan, but expect higher fuel costs.
2021 Audi S6
Critical Failure Risk
Recalls indicate potential issues with rear axle lock nuts, which could lead to alignment problems or uneven tire wear if not addressed. This is a safety-critical component impacting suspension integrity.
Early detection can help you avoid a $500-$1,500 repair.
Safety & Bulletins
Owner Complaints
No primary complaint themes found.
Performance & Efficiency
- Horsepower
- 444HP
- Torque
- 443 lb–ftLB-FT
Reliability
Practicality
The score is mainly limited by high fuel consumption.
Who This Car Is For
Best for
Enthusiasts seeking a blend of luxury, performance, and all-wheel-drive capability.
+2 more buyer-fit notes in the full report
Avoid if
Drivers prioritizing absolute long-term reliability with minimal potential for unexpected repairs.
+2 more buyer-fit warnings in the full report
2021 Audi S6 Reliability Analysis
Explore comprehensive reliability data including official safety recalls, consumer complaints, and common mechanical failures for the 2021 Audi S6.
Vehicle Specs
- Fuel Type
- Premium
- Seating Capacity
- 5
- Horsepower
- 444 hp
- Torque
- 443 lb-ft
- Transmission
- Automatic
- Drivetrain
- AWD/All-Wheel Drive
- Body Style
- Sedan
- MSRP Range
- $75,445 - $82,145
- EPA Combined MPG
- 22
CarFocal account required
See the full 2021 Audi S6 buyer report before you decide
Most Common Issues
1. Rear Axle Lock Nut Failure
Most reportedUsage data observed
2. Airbag System Malfunction
Usage data observed
First Service Interval
- Oil Change (5W-40 Synthetic) (Parts: 5W-40 Synthetic Engine Oil, Oil Filter) - Tire Rotation and Inspection - Brake System Inspection - Cabin Air Filter Replacement
Est. shop cost: $150 - $300
Unlock the full maintenance guide for every scheduled service interval and cost forecast.
Free • Takes 20 seconds • Saves Thousands $
Already have an account? Log in
FAQ
Is the 2021 Audi S6 reliable?
The CarFocal Reliability Score for the 2021 Audi S6 is 6.8/10. Reliability score is 6.8/10. NHTSA recalls: 57. Owner complaints: 0.
How practical is the 2021 Audi S6 for daily use?
Practicality score is 5.7/10. The score is mainly limited by high fuel consumption. EPA combined economy is 22 MPG. Seating capacity is 5. 4 passenger doors are listed. Boot capacity is 520 litres.
What is the overall score for the 2021 Audi S6?
The CarFocal Overall Score for the 2021 Audi S6 is 6.1/10. Overall score is 6.1/10 (Mixed). Confidence 55%. Maintenance 6.5/10. Practicality 5.7/10.
What does it cost to own and maintain a 2021 Audi S6?
Based on Carfocal's data, First listed service: - Oil Change (5W-40 Synthetic) (Parts: 5W-40 Synthetic Engine Oil, Oil Filter) - Tire Rotation and Inspection - Brake System Inspection - Cabin Air Filter Replacement at 10,000 miles. Estimated first-year maintenance: $1,200 - $2,000. Repair prediction highlight: Rear Axle Lock Nut (typical at 50,000 miles, estimated cost Min: $500 • Max: $1,000).
What is the MSRP range for the 2021 Audi S6?
MSRP range is $75,445 - $82,145.
What engine is in the 2021 Audi S6?
Engine specs list V6 • 6 • 2.9. Output is 444 hp • 443 lb-ft.
What transmission does the 2021 Audi S6 use?
According to CarFocal's specs for the 2021 Audi S6, transmission is Automatic. The paired drivetrain is AWD/All-Wheel Drive.
Does the 2021 S6 require Premium gas?
Manufacturer fuel recommendation: Premium.
What is the combined EPA MPG for the 2021 Audi S6?
EPA combined estimate is 22 MPG.
What driver assistance and safety features are available on the 2021 Audi S6?
11 standard and 3 optional driver assistance features. Key features include Anti-lock Braking System, Electronic Stability Control, Traction Control.
What is the fuel economy range for the 2021 Audi S6?
According to CarFocal's specs for the 2021 Audi S6, fuel economy range is 18-28 mpg combined.
How many people fit in a 2021 Audi S6?
According to CarFocal's specs for the 2021 Audi S6, seating capacity is 5.
What body style is the 2021 Audi S6?
According to CarFocal's specs for the 2021 Audi S6, body style is sedan.
What drivetrain does the 2021 Audi S6 use?
According to CarFocal's specs for the 2021 Audi S6, drivetrain is AWD/All-Wheel Drive. Transmission is Automatic.
What are the NHTSA safety ratings for the 2021 Audi S6?
NHTSA ratings: Rollover 5/5.
Are there open safety recalls on the 2021 Audi S6?
This model year has 57 official safety campaigns listed.
Should buyers consider alternatives to the 2021 Audi S6?
Alternatives listed in this guide: 2021 Mercedes-Benz E-Class and 2021 Audi A6.