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2021 Audi S6 Overview, Reviews, Ratings & Specs

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Drew B | March 31, 2025
The 2021 Audi S6 is a performance-oriented luxury sedan, building upon the A6 with enhanced power and sportier styling. Part of the fourth-generation (C8) S6, it's available as a sedan. Key trims typically include Premium Plus and Prestige. The 2021 S6 stands out for its blend of refined luxury, thrilling performance, and advanced technology. New, it ranged roughly from $75,000 to $85,000, depending on options. Its popularity stems from its ability to deliver a dynamic driving experience without sacrificing comfort and practicality.
The Good

The 2021 Audi S6 offers thrilling performance from its potent engine, delivering quick acceleration and engaging handling. Its luxurious interior provides exceptional comfort, while the stylish design appeals to emotional buyers. Practical advantages include advanced technology, decent fuel efficiency for its class, and Audi's reputation for build quality, making it a compelling value proposition.

The Bad

Potential weaknesses of the 2021 Audi S6 include the sometimes complex and potentially costly maintenance associated with its high-performance engine and advanced technology. Some owners have reported issues with the infotainment system. The rear seat space might be considered less generous compared to some competitors. Turbo lag at lower RPMs has also been noted.

2021 Audi S6: Quick Overview

  • Engine Options: 2.9-liter twin-turbocharged V6 with a 48-volt mild-hybrid system
  • Horsepower: 444 hp
  • Fuel Economy: EPA estimated 19 mpg city / 29 mpg highway / 23 mpg combined
  • 0–60 Times: Approximately 4.4 seconds
  • Towing Capacity: Not recommended for towing
  • Trim-Level Features:
    • Premium Plus:
      • Audi virtual cockpit
      • Navigation system
      • Bang & Olufsen 3D Premium Sound System
      • Heated front seats
      • Leather upholstery
      • Adaptive cruise assist
      • Lane keep assist
      • Blind spot monitoring
      • Rear cross traffic alert
      • Matrix-design LED headlights
    • Prestige (adds to Premium Plus):
      • Head-up display
      • Power soft-closing doors
      • Heated rear seats
      • Ventilated front seats with massage function
      • Dual-pane acoustic glass
      • Intersection assist
      • Traffic sign recognition

2021 Audi S6 Specifications

Vehicle Information
Year 2021
Make Audi
Model S6
Trim -
Style All-Wheel Drive TFSI
Type Passenger Sedan
Category Minicompact Car
Manufacturing Details
Made In Germany
Manufacturing City NECKARSULM
Dimensions
Doors 4-Door
Curb Weight -
Gross Vehicle Weight Rating -
Overall Height -
Overall Length -
Overall Width -
Wheelbase Length -
Standard Seating 5
Engine & Performance
Engine TFSI
Engine Size 2.9L
Engine Cylinders 6
Transmission 8 Automatic
Transmission Type Automatic
Transmission Speeds 8-Speed
Drivetrain All-Wheel Drive
Additional Features
Anti-Brake System Standard
Steering Type -
Pricing
Manufacturer Suggested Retail Price (MSRP) -
Invoice Price -
Delivery Charges -

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Salvage/Rebuilt
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Accident
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Theft
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Open Lien
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Past Sale
Listings
Safety
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Market Price
Analysis

What Problems Does the 2021 Audi S6 Have?

While the 2021 Audi S6 generally enjoys good reliability, some owners have reported issues related to the infotainment system, including glitches, slow response times, and connectivity problems. The 48-volt mild-hybrid system, while enhancing performance and efficiency, is a relatively new technology, and some owners have expressed concerns about its long-term durability and potential repair costs. Some owners have also reported minor electrical issues. It's crucial to check for any recalls related to the 2021 S6 on the NHTSA website.
Long-term reliability concerns often revolve around the complexity of the engine and associated systems, which could lead to higher maintenance costs as the vehicle ages. Oil consumption has also been a reported issue in some Audi models with similar engines, so it's worth monitoring. Regular maintenance, using quality parts, and addressing issues promptly are essential for maintaining the long-term reliability of the 2021 S6. Staying updated with Technical Service Bulletins (TSBs) can help identify and address potential problems early on.

How long will the 2021 Audi S6 last?

With diligent maintenance, the 2021 Audi S6 can reasonably be expected to provide 150,000 to 200,000 miles of service, potentially lasting 10-15 years. Proper maintenance habits are crucial. Long-term durability hinges on the engine's complex components and the electrical system. Potential weaknesses over time include increased susceptibility to sensor failures, turbocharger issues, and the aging of the 48-volt mild-hybrid system. Regular fluid changes, timely repairs, and careful driving habits contribute to extended lifespan. Some owners find proactive replacement of wear items extends the life of key components.

What Technology & Safety Features are Included?

The 2021 Audi S6 boasts a comprehensive suite of technology features. The infotainment system features a dual-screen setup with haptic feedback. Apple CarPlay and Android Auto are standard. The Audi virtual cockpit, a customizable digital instrument cluster, provides key driving information. Entertainment is enhanced by the available Bang & Olufsen 3D Premium Sound System.
Standard driver-assistance features include adaptive cruise assist, lane keep assist, blind spot monitoring, and rear cross traffic alert. Optional features include intersection assist, traffic sign recognition, and a head-up display. Safety features encompass a robust airbag system, anti-lock brakes, and electronic stability control.
The IIHS (Insurance Institute for Highway Safety) and NHTSA (National Highway Traffic Safety Administration) conduct crash tests. Check their respective websites for the 2021 Audi S6's specific ratings. Higher trims include additional safety features. These systems combine to provide a safe and technologically advanced driving experience.

What Colors Options are Available?

Exterior Colors
Brilliant Black
Ibis White
Mythos Black Metallic
Navarra Blue Metallic
Tango Red Metallic
Daytona Gray Pearl Effect
Florett Silver Metallic
Interior Colors
Okapi Brown
Black
Arras Red

2021 Audi S6 Prices and Market Value

The 2021 Audi S6 had a starting MSRP around $75,000 when new, with higher trims reaching $85,000+ with options. Current used market prices range from roughly $50,000 to $65,000 depending on mileage, condition, and trim. Depreciation is moderate, influenced by mileage, condition, service history, and optional equipment. Lower mileage examples with complete service records command higher resale values. The S6's performance and luxury help it retain value relatively well compared to some other luxury sedans. Market demand for used performance sedans also impacts pricing.

2021 Audi S6 Cost of Ownership

The 2021 Audi S6 is generally considered costly to own. Insurance premiums are higher due to its performance capabilities and luxury status. Fuel costs are moderate, reflecting its fuel economy. Maintenance and repair costs can be significant, particularly for specialized components like the turbochargers and 48-volt system. Long-term ownership requires diligent maintenance to prevent costly repairs. While not economical, its appeal lies in performance and luxury, which come at a price. Budget accordingly for potential maintenance and repairs.

2021 Audi S6 Fuel Efficiency

Fuel Type Gasoline
Fuel Capacity -
City Mileage -
Highway Mileage -

2021 Audi S6 Safety Rating

NHTSA
Overall Rating Not Tested
Overall Frontal Star Rating Not Tested
Side Overall Star Rating Not Tested
Overall Rollover Star Rating
Combined Front Seat Rating Not Tested
Combined Rear Seat Rating Not Tested
Overall Frontal Star Rating Not Tested
Frontal Barrier Star Ratings Not Tested
Overall Side Star Rating Not Tested
Side Barrier Star Ratings Not Tested
Side Pole Star Rating Not Tested
Combined Side Barrier And Side Pole Star Ratings Not Tested
Rollover Resistance Star Rating

2021 Audi S6 Insurance

Insurance for a 2021 Audi S6 is moderately priced, reflecting its status as a Passenger Sedan with strong safety ratings and
reasonable repair costs.

How Does the 2021 Audi S6 Compare to Other Passenger Sedan?

The 2021 Audi S6 competes with the BMW M550i, Mercedes-AMG E53, and Acura TLX Type S. The S6 offers a balanced blend of performance, luxury, and technology, but its reliability can be a concern compared to the Acura. The BMW M550i often provides a more engaging driving experience and is frequently lauded for its engine. The AMG E53 offers a similarly sporty feel with Mercedes-Benz's renowned luxury. Price-wise, the S6 is generally competitive, but the Acura TLX Type S offers a compelling value proposition.
Alternatives to consider include the Porsche Panamera, which offers superior performance and handling, but at a higher price point. The Genesis G80 offers similar features and luxury at a more affordable price, though it lacks the S6's performance pedigree. For those prioritizing reliability, the Lexus GS (discontinued after 2020 but available used) might be a better option. Ultimately, the best choice depends on individual priorities – performance, luxury, reliability, or value.

Ranks #846 Sedan

1 2023 Toyota Camry (5.0★)
2 2023 Honda Accord (0.0★)
3 2023 Lexus ES (0.0★)
4 2024 Subaru Legacy (5.0★)
5 2022 Mazda MX-30 (4.0★)
6 2024 BMW M3 (0.0★)
7 2023 Ford Mustang (5.0★)
8 2023 Mercedes-Benz AMG GT (0.0★)
9 2023 Audi A3 (0.0★)
10 2023 Chevrolet Camaro (5.0★)
11 2023 Hyundai Elantra Hybrid (0.0★)
12 2023 Nissan Altima (4.0★)
846 2021 Audi S6 (0.0★)

Final Verdict: Is the 2021 Audi S6 a Good Passenger Sedan?

The 2021 Audi S6 is ideal for enthusiasts seeking a blend of performance, luxury, and technology in a stylish sedan. It's worth buying if you appreciate its sporty driving dynamics and don't mind potentially higher maintenance costs. A used 2021 S6 represents a good value, offering significant depreciation savings. Opt for a well-maintained example with a comprehensive service history. The Premium Plus trim provides excellent features, while the Prestige trim adds even more luxury. Ensure you obtain a pre-purchase inspection to assess its condition and address any potential issues. It's a great choice for those wanting a sophisticated and capable daily driver.

2021 Audi S6 Owner Reviews

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Drew B

Drew is a seasoned automotive expert and contributor to VinCheck.info. With nearly 15 years of experience as a former Porsche technician, he brings a wealth of hands-on knowledge to his writing. Born in North Carolina, a region renowned for its deep-rooted NASCAR culture, Drew developed a passion for cars early in life, often building and working on vehicles from a young age. At VINCheck, Drew leverages his extensive technical background to provide in-depth analyses of various vehicles. His articles often focus on engine performance, reliability, and maintenance insights, offering readers practical information grounded in real-world experience. Some of his notable contributions include reviews on the Mazda CX-5's longevity and detailed examinations of engine options for models like the 2011 Toyota Camry and Tacoma