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2015 Audi S8 Overview, Reviews, Ratings & Specs

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Eugene S | March 31, 2025

The 2015 Audi S8 is a high-performance luxury sedan representing Audi's commitment to blending power and sophistication. It is a part of the D4 generation S8 which ran from 2013-2017. Offered as a four-door sedan, the S8 stands out with its twin-turbocharged V8 engine, quattro all-wheel drive, and luxurious interior. The 2015 model year featured a single, well-equipped trim level. New, the S8 ranged from approximately $115,000 to $120,000. Its potent engine and understated elegance contribute to its popularity.

The Good

The 2015 Audi S8 offers blistering performance from its V8 engine, appealing to the enthusiast. Comfort and a refined interior cater to luxury desires. While not the most fuel-efficient, it offers decent efficiency for its class. The sleek design provides understated elegance. Although initial price was high, used models present good value, offering a high level of performance and features for the money. Reliability is generally good with proper maintenance.

The Bad

Potential weaknesses of the 2015 Audi S8 include high maintenance costs due to its complex systems. Air suspension issues can be expensive to repair. Oil consumption in the V8 engine is something to monitor. The infotainment system, while advanced for its time, can feel dated compared to newer systems. Turbocharger reliability should also be considered.

2015 Audi S8: Quick Overview

Engine Options: 4.0-liter Twin-Turbocharged V8
Horsepower: 520 hp @ 6,000 rpm
Torque: 481 lb-ft @ 1,700 rpm
Fuel Economy: EPA estimated 15 mpg city / 25 mpg highway / 19 mpg combined
0-60 mph: Approximately 3.9 seconds
Towing Capacity: Not officially rated for towing by Audi.
Trim-Level Features:
- Standard Features:
  - Quattro all-wheel drive
  - Eight-speed automatic transmission
  - Adaptive air suspension
  - LED headlights and taillights
  - 21-inch alloy wheels
  - Diamond-stitched leather upholstery
  - Heated and ventilated front seats
  - Massage front seats
  - Four-zone automatic climate control
  - Power sunroof
  - Navigation system
  - Bose surround-sound audio system
  - Audi connect services
  - Rearview camera
  - Parking sensors
  - Blind-spot monitoring
  - Lane-keeping assist
  - Adaptive cruise control
- Optional Features:
  - Bang & Olufsen advanced sound system
  - Night vision assist
  - Carbon fiber exterior trim
  - Sport exhaust system

2015 Audi S8 Specifications

Vehicle Information

Year	2015
Make	Audi
Model	S8
Trim	-
Style	All-Wheel Drive 4.0-T
Type	Sedan
Category	Mid-Size Car

Manufacturing Details

Made In	Germany
Manufacturing City	NECKARSULM

Dimensions

Doors	4-Door
Curb Weight	2125.08 kg
Gross Vehicle Weight Rating	3175.14 kg
Overall Height	-
Overall Length	-
Overall Width	-
Wheelbase Length	-
Standard Seating	-

Engine & Performance

Engine	4.0
Engine Size	4L
Engine Cylinders	8
Transmission	Automatic
Transmission Type	Automatic
Transmission Speeds	-
Drivetrain	All-Wheel Drive

Additional Features

Anti-Brake System	-
Steering Type	-

Pricing

Manufacturer Suggested Retail Price (MSRP)	$114,900 USD
Invoice Price	$106,858 USD
Delivery Charges	$925 USD

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What Problems Does the 2015 Audi S8 Have?

The 2015 Audi S8, while generally reliable, has a few frequently reported problems. One common concern is excessive oil consumption, particularly in the 4.0-liter twin-turbo V8. Owners report needing to add oil between service intervals. Another area of concern is the air suspension system. Air struts and compressors can fail, leading to costly repairs. The infotainment system, although advanced for its time, can experience glitches or become outdated. Turbocharger issues, such as failure or leaks, have also been reported. Electrical system malfunctions, though less frequent, can occur. Recalls for the 2015 Audi S8 have been issued for issues such as potential fuel leaks or airbag malfunctions; it is crucial to check the VIN for recall status before purchasing a used model. Long-term reliability hinges on consistent and proper maintenance. Neglecting scheduled services can exacerbate these issues and lead to more significant problems down the road. Overall, the 2015 Audi S8 requires careful maintenance to ensure long-term dependability.

How long will the 2015 Audi S8 last?

With proper maintenance, a 2015 Audi S8 can realistically provide 150,000 to 200,000 miles of service or 10-15 years. However, this depends heavily on consistent maintenance habits. Regular oil changes, timely replacement of wear items, and addressing issues promptly are crucial. Over time, the air suspension system is a common weak point, requiring costly repairs or replacement. The engine, while robust, can suffer from oil consumption issues if not maintained correctly. Electrical components and the infotainment system may also show signs of age. Neglecting maintenance will drastically shorten its lifespan.

What Technology & Safety Features are Included?

The 2015 Audi S8 boasts a comprehensive suite of built-in tech, entertainment, driver-assistance, and safety features. Standard tech includes Audi's MMI infotainment system with navigation, a Bose surround-sound audio system, and Audi Connect services. Entertainment features included Bluetooth connectivity, satellite radio, and media interface. Driver-assistance features were plentiful, featuring adaptive cruise control, blind-spot monitoring, lane-keeping assist, a rearview camera, and parking sensors. Optional features included a Bang & Olufsen advanced sound system and night vision assist. Safety features comprised of anti-lock brakes, stability control, multiple airbags, and a robust chassis design. The NHTSA gave the 2015 Audi A8 (the S8 is based on the A8) a 4-star overall safety rating. The IIHS did not specifically test the 2015 Audi S8 but the A8 received good ratings in most categories. The advanced driver assistance systems provide an added layer of safety, while the high-performance braking system ensures confident stopping power. Overall, the 2015 S8 offered a technologically advanced and safe driving experience for its time.

What Colors Options are Available?

Exterior Colors

Brilliant Black

Ibis White

Glacier White Metallic

Mythos Black Metallic

Havanna Black Metallic

Oolong Gray Metallic

Moonlight Blue Metallic

Daytona Gray Pearl Effect

Misano Red Pearl Effect

Interior Colors

Nougat Brown Leather

Black Leather

Velvet Beige Leather

Cognac Brown Leather

Florentine Brown Leather

Express Red Leather

2015 Audi S8 Prices and Market Value

When new, the 2015 Audi S8 retailed for approximately $115,000 to $120,000. As of 2024, used market prices typically range from $25,000 to $40,000, depending on mileage, condition, and location. The S8 has experienced significant depreciation due to its high initial cost and higher maintenance expenses compared to mainstream vehicles. Factors affecting resale value include mileage, condition (especially air suspension and engine health), accident history, and the presence of desirable options like the Bang & Olufsen sound system. Lower mileage examples in excellent condition command a premium.

2015 Audi S8 Cost of Ownership

Owning a 2015 Audi S8 is generally considered costly. Insurance premiums are high due to its performance and value. Fuel costs are also significant, reflecting its powerful V8 engine. Maintenance and repair expenses are above average, especially regarding the air suspension and engine. Long-term ownership necessitates budgeting for potential costly repairs. It is not an economical vehicle; buyers should be prepared for substantial running costs.

2015 Audi S8 Fuel Efficiency

Fuel Type Gasoline

Fuel Capacity 82.14 liters

City Mileage 7.23 km/l

Highway Mileage 11.48 km/l

2015 Audi S8 Safety Rating

IIHS

Roof Strength Test Results Not Tested

Rear Crash Protection/Head Restraint Ratings Not Tested

Small Overlap Front Test Results Not Tested

Moderate Overlap Front Test Results Not Tested

Side Impact Test Results Not Tested

2015 Audi S8 Recalls & Defects

Fuel System, Gasoline:delivery:hoses, Lines/Piping, and Fittings

Recall date 2018-06-25

Recall no. 18v430000

Source NHTSA

Summary Volkswagen Group OF America, Inc. (Volkswagen) IS Recalling Certain 2013-2015 Audi S8 and A8 Vehicles. THE Fuel Supply Line FOR THE High Pressure Fuel Pump MAY Become Porous Over Time, Resulting IN A Fuel Leak.

Consequence A Fuel Leak IN THE Presence OF AN Ignition Source CAN Increase THE Risk OF A Fire.

Remedy Audi Will Notify Owners, and Dealers Will Replace THE Fuel Line, Free OF Charge. THE Recall Began July 20, 2018. Owners MAY Contact Audi Customer Service AT 1-800-253-2834. Volkswagen's Number FOR This Recall IS 20av.

Notes Owners MAY Also Contact THE National Highway Traffic Safety Administration Vehicle Safety Hotline AT 1-888-327-4236 (Tty 1-800-424-9153), or GO TO Www.safercar.gov.

Fuel System, Gasoline:delivery:hoses, Lines/Piping, and Fittings

Recall date 2019-01-28

Recall no. 19v057000

Source NHTSA

Summary Volkswagen Group OF America, Inc. (Volkswagen) IS Recalling Certain 2013-2016 Audi A8 and S8 Vehicles. THE Fuel Supply Line FOR THE High Pressure Fuel Pump MAY Become Porous and Leak Fuel.

Consequence Leaking Fuel, IN THE Presence OF AN Ignition Source, Increases THE Risk OF Fire.

Remedy Audi HAS Notified Owners, and Dealers Will Install A Fuel Pressure Damper, Free OF Charge. THE Recall Began February 21, 2019. Owners MAY Contact Audi Customer Service AT 1-800-253-2834. Volkswagen's Number FOR This Recall IS 20bm.

Notes Owners MAY Also Contact THE National Highway Traffic Safety Administration Vehicle Safety Hotline AT 1-888-327-4236 (Tty 1-800-424-9153), or GO TO Www.safercar.gov.

Structure:body:hood

Recall date 2020-07-07

Recall no. 20v397000

Source NHTSA

Summary Volkswagen Group OF America, Inc. (Volkswagen) IS Recalling Certain 2013-2018 Audi S8 and A8 Vehicles. THE Seal Around THE Engine Compartment MAY Come Loose and Contact HOT Engine Components.

Consequence IF THE Seal Contacts HOT Engine Components, There Could BE AN Increased Risk OF A Fire.

Remedy Audi Will Notify Owners, and Dealers Will Install A Retaining Plate TO Prevent THE Engine Compartment Seal From Loosening. THE Recall Began September 4, 2020. Owners MAY Contact Audi Customer Service AT 1-800-253-2834. Volkswagen's Number FOR This Recall IS 51g6.

Notes Owners MAY Also Contact THE National Highway Traffic Safety Administration Vehicle Safety Hotline AT 1-888-327-4236 (Tty 1-800-424-9153), or GO TO Www.safercar.gov.

Engine and Engine Cooling:engine:gasoline:turbo/Supercharger

Recall date 2022-03-23

Recall no. 22v178000

Source NHTSA

Summary Volkswagen Group OF America, Inc. (Audi) IS Recalling Certain 2013-2017 A8, S6 Sedan, S7, S8, and 2014-2017 RS7 Vehicles. THE Turbocharger OIL Supply Strainer CAN Become Blocked, Causing Wear TO THE Bearings DUE TO Lack OF Lubrication.

Consequence Worn Bearings CAN Cause THE Turbine Wheel TO Contact THE Turbocharger Housing or Cause THE Shaft TO Break, Causing AN Engine Stall and Increasing THE Risk OF A Crash.

Remedy Dealers Will Replace THE OIL Strainer and Perform AN OIL Change, Free OF Charge. Owner Notification Letters Were Mailed August 4, 2022. Owners MAY Contact Audi Customer Service AT 1-800-253-2834. Audi's Number FOR This Recall IS 21h7.

Notes Owners MAY Also Contact THE National Highway Traffic Safety Administration Vehicle Safety Hotline AT 1-888-327-4236 (Tty 1-800-424-9153), or GO TO Www.nhtsa.gov.

2015 Audi S8 Warranty

Rust

Original warranty 144 months / unlimited miles

Estimated remaining 24 months / unlimited miles