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2021 Audi S8 Overview, Reviews, Ratings & Specs

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Simon A | March 31, 2025
The 2021 Audi S8 represents the pinnacle of Audi's luxury sedan lineup. It's a full-size, four-door sedan blending high performance with opulent comfort. While the S8 model line has evolved over several generations, the 2021 model year is part of the fourth generation (D5). A single trim, the S8, is offered, focusing on a fully-loaded experience. Pricing typically ranged from $130,000 new. Its combination of understated elegance and powerful performance makes it a popular choice for discerning buyers seeking both luxury and excitement.
The Good

The 2021 Audi S8 excels in performance, thanks to its potent V8 engine. Comfort is paramount with its luxurious interior and advanced suspension. The design is both elegant and sporty. For practical buyers, the S8 offers a degree of reliability expected from Audi and a surprisingly efficient engine. Emotionally, the S8 provides a thrilling driving experience coupled with prestige.

The Bad

Potential weaknesses of the 2021 Audi S8 include its high purchase price and potentially expensive maintenance costs. Some owners have reported issues with the complex electronics and air suspension system. Fuel economy, while decent for its class, isn't stellar. Be mindful of potential depreciation, as luxury sedans tend to lose value quickly.

2021 Audi S8: Quick Overview

  • Engine: 4.0-liter Twin-Turbo V8
  • Horsepower: 563 hp
  • Torque: 590 lb-ft
  • Transmission: 8-speed Tiptronic automatic
  • Fuel Economy (EPA Estimated): 15 mpg city / 24 mpg highway / 18 mpg combined
  • 0-60 mph: Approximately 3.8 seconds
  • Towing Capacity: Not recommended or rated by Audi.
  • Trim-Level Features:
    • Adaptive Air Suspension: Provides a smooth and controlled ride.
    • Quattro All-Wheel Drive: Delivers exceptional grip and handling in all conditions.
    • Audi Virtual Cockpit: A customizable digital instrument cluster.
    • MMI Touch Response System: Dual touchscreens for infotainment and vehicle controls.
    • Premium Leather Upholstery: Valcona leather seats for ultimate comfort.
    • Heated and Ventilated Front Seats: Ensure comfort in any weather.
    • Massaging Front Seats: Adds a touch of luxury to every drive.
    • Bang & Olufsen 3D Premium Sound System: Delivers an immersive audio experience.
    • Panoramic Sunroof: Provides an open and airy cabin.
    • Advanced Driver-Assistance Systems: Includes adaptive cruise assist, lane keep assist, and more.
    • HD Matrix-design LED Headlights: Offer exceptional visibility.

2021 Audi S8 Specifications

Vehicle Information
Year 2021
Make Audi
Model S8
Trim -
Style Sedan All-Wheel Drive
Type Sedan
Category Minicompact Car
Manufacturing Details
Made In Germany
Manufacturing City NECKARSULM
Dimensions
Doors 4-Door
Curb Weight -
Gross Vehicle Weight Rating 7000 pounds
Overall Height -
Overall Length -
Overall Width -
Wheelbase Length -
Standard Seating 5
Engine & Performance
Engine 4.0 8
Engine Size 4L
Engine Cylinders 8
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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What Problems Does the 2021 Audi S8 Have?

Frequently reported problems for the 2021 Audi S8, while not widespread, tend to revolve around the vehicle's complex electronic systems. Some owners have reported issues with the MMI infotainment system, experiencing glitches, slow response times, or connectivity problems. The air suspension system, while providing a luxurious ride, can be prone to issues over time, potentially requiring expensive repairs. Battery drain issues have also been mentioned by some owners.
Recalls for the 2021 Audi S8 have been relatively limited, but it's always recommended to check the NHTSA website for any updates or pending recalls specific to the vehicle's VIN. Long-term reliability concerns primarily center around the potential for expensive repairs to the air suspension, complex electronics, and the twin-turbo V8 engine as the vehicle ages. Preventive maintenance and adhering to the recommended service schedule are crucial to mitigating these risks. Due to the relative newness of the 2021 model year, extensive long-term reliability data is still emerging, but monitoring owner forums and reputable review sites can provide valuable insights into potential issues.

How long will the 2021 Audi S8 last?

With proper maintenance, a 2021 Audi S8 can realistically achieve 150,000 to 200,000 miles or more, translating to 10-15 years of service for many owners. However, achieving this longevity requires diligent adherence to the maintenance schedule. Long-term durability hinges on addressing potential weaknesses, primarily the air suspension system and complex electronics, before they escalate into major issues. Regular fluid changes, timely replacement of wear items, and proactive diagnostics are essential. Neglecting maintenance can lead to significantly reduced lifespan and costly repairs.

What Technology & Safety Features are Included?

The 2021 Audi S8 is packed with advanced technology.
  • Tech & Entertainment: It features Audi's MMI touch response system with dual touchscreens, a virtual cockpit digital instrument cluster, wireless Apple CarPlay and Android Auto, a Bang & Olufsen 3D premium sound system, and a Wi-Fi hotspot.
  • Driver-Assistance: Standard features include adaptive cruise assist, lane keep assist, blind-spot monitoring, rear cross-traffic alert, and a surround-view camera system. Optional features may include night vision assist.
  • Safety: It includes features like Audi pre sense basic and front, which can detect potential collisions and prepare the vehicle for impact.
Crash-test ratings from NHTSA and IIHS should be consulted for the most up-to-date safety information. The S8 aims to deliver top-tier safety through its robust construction and comprehensive suite of driver-assistance technologies. Optional features could also include executive rear seat package, which includes rear seat entertainment screens and individual climate controls. Audi connect provides connected services for navigation, remote vehicle access, and emergency assistance.

What Colors Options are Available?

Exterior Colors
Daytona Gray Pearl Effect
Florett Silver Metallic
Glacier White Metallic
Mythos Black Metallic
Navarra Blue Metallic
Ultra Blue Metallic
Firmament Blue Metallic
Avalon Green Metallic
Terragrey Metallic
Arras Red
District Green Metallic
Moonlight Blue Metallic
Carrara White
Gentian Blue Metallic
Savile Beige Metallic
Interior Colors
Cognac Brown Fine Nappa Leather
Black Fine Nappa Leather
Merlot Red Fine Nappa Leather
Sard Brown Fine Nappa Leather
Okapi Brown Fine Nappa Leather

2021 Audi S8 Prices and Market Value

The 2021 Audi S8 had a starting MSRP around $130,000 when new. Current used market prices vary widely depending on mileage, condition, and options, typically ranging from $70,000 to $90,000+. Depreciation is significant for luxury sedans, and the S8 is no exception. Factors affecting resale value include mileage, condition, maintenance history, and optional equipment. Lower mileage, a clean Carfax report, and desirable options like the Bang & Olufsen sound system and driver-assistance packages will command higher resale prices.

2021 Audi S8 Cost of Ownership

The 2021 Audi S8 is a costly vehicle to own. Insurance premiums are high due to its high value and performance capabilities. Fuel costs are substantial, given its twin-turbo V8 engine. Maintenance and repair costs can be expensive, especially for the air suspension and complex electronics. Long-term ownership requires budgeting for potential repairs and adhering to the recommended service schedule. It is not an economical vehicle to own.

2021 Audi S8 Fuel Efficiency

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

2021 Audi S8 Safety Rating

NHTSA
Overall Rating Not Tested
Overall Frontal Star Rating Not Tested
Side Overall Star Rating Not Tested
Overall Rollover Star Rating Not Tested
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 Not Tested

2021 Audi S8 Insurance

Insurance for a 2021 Audi S8 is moderately priced, reflecting its status as a Sedan with strong safety ratings and
reasonable repair costs.

How Does the 2021 Audi S8 Compare to Other Sedan?

The 2021 Audi S8 competes with vehicles like the Mercedes-Benz S-Class, BMW 7 Series, and Porsche Panamera.
  • Performance: The S8 offers comparable performance to the S-Class and 7 Series but may lag slightly behind the Panamera in outright sportiness.
  • Features: The S8 is well-equipped, but the S-Class often sets the benchmark for luxury and technology.
  • Reliability: Reliability can be a concern across this class, and the S8 is no exception. The S-Class and 7 Series have also been known to have electronic issues.
  • Price: The S8 is generally competitively priced within its segment.
Alternatives include:
  • Mercedes-Benz S-Class: Offers a more luxurious and tech-focused experience but can be more expensive.
  • BMW 7 Series: Provides a sportier driving experience than the S8, with a focus on technology and driver engagement.
  • Porsche Panamera: Delivers the most athletic driving dynamics in the class but sacrifices some comfort and rear-seat space.
A similar alternative is the Maserati Quattroporte which offers Italian styling and performance, but lags behind in reliability and technology. The choice depends on individual priorities regarding luxury, performance, and budget.

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5 2022 Mazda MX-30 (5.0★)
6 2024 BMW M3 (0.0★)
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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★)
848 2021 Audi S8 (0.0★)

Final Verdict: Is the 2021 Audi S8 a Good Sedan?

The 2021 Audi S8 is ideal for buyers seeking a blend of high performance, luxurious comfort, and understated elegance. It's worth buying, particularly on the used market if you can find a well-maintained example with a clean service history. A used model offers significant savings compared to new. Ensure a pre-purchase inspection by a qualified mechanic, focusing on the air suspension and electronics. If you prioritize sporty handling above all else, the Porsche Panamera might be a better fit. However, if you desire a balanced luxury sedan with impressive performance, the S8 is a compelling choice.

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Simon A

Simon is a contributor to VinCheck, where he provides articles and reviews on various automotive topics. His work focuses on delivering accurate and up-to-date information about used cars, helping readers make informed decisions.