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2015 Audi S8 Report

Known issues, recalls, running costs, and what to check before you buy.

Updated Jun 2, 2026·Daniel Wilson·3 Critical Recalls

Overall Score

5.9/ 10
Our Verdict
High risk

Key Takeaways

  • The 2015 Audi S8's primary ownership concern is the risk of fuel leaks, a critical issue with potential fire implications.
  • Turbocharger lubrication issues, stemming from a blocked oil supply strainer, pose a significant risk of internal engine damage.
  • Despite no logged consumer complaints, a high volume of Technical Service Bulletins (TSBs) suggests a complex vehicle prone to various operational issues.
  • Confirm all open recalls, especially those related to the fuel system and turbocharger, have been properly addressed by a qualified technician.
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OverviewWho This Car Is ForReliability & ProblemsVehicle SpecsUnlock Full ReportFAQ
Overview

2015 Audi S8

The 2015 Audi S8 is a potent, all-wheel-drive luxury sedan that blends potent performance with sophisticated comfort. Under its hood lies a 4.0-liter, 8-cylinder engine paired with an 8-speed automatic transmission, delivering brisk acceleration for its class. While offering a compelling driving experience, potential buyers should be aware of its below-average reliability rating, which is influenced by multiple recalls. The vehicle's fuel economy is rated at 16 mpg city and 27 mpg highway, contributing to higher running costs.

Critical Failure Risk

Recalls indicate issues with fuel supply line porosity and leakage, posing a fire risk. This can manifest as fuel smell or visible leaks.

Early detection can help you avoid a $2,000-$5,000 repair.

Open Maintenance Analysis →

Safety & Bulletins

Open Recalls4
Service Bulletins0
Full Recall History →

Owner Complaints

0

No primary complaint themes found.

Detailed Issue Breakdown →

Performance & Efficiency

Fuel Efficiency
Combined
20
MPG
City
16
MPG
Highway
27
MPG
Full Vehicle Specifications ↓

Reliability

8.4/ 10

Practicality

3.7/ 10

The score is mainly limited by high fuel consumption.

Buyer Fit

Who This Car Is For

Best for

Enthusiasts who prioritize potent performance and luxury amenities over long-term, worry-free ownership.

+2 more buyer-fit notes in the full report

Avoid if

Drivers seeking a low-maintenance, highly reliable daily driver.

+2 more buyer-fit warnings in the full report

2015 Audi S8 Reliability Analysis

Explore comprehensive reliability data including official safety recalls, consumer complaints, and common mechanical failures for the 2015 Audi S8.

  • Recall TimelineOfficial safety notices
  • Owner ComplaintsReal driver reports
  • Failure AnalysisKnown part defects
Specs

Vehicle Specs

Fuel Type
Premium
Transmission
Automatic (S8)
Drivetrain
All-Wheel Drive
Body Style
Sedan
EPA Combined MPG
20

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Most Common Issues

1. Fuel System Leaks

Most reported

Usage data observed

2. Turbocharger Lubrication Issues

Usage data observed

See all common issues in the maintenance guide

First Service Interval

- Oil Change (5W-40 Synthetic) (Parts: 5W-40 Synthetic Oil, Oil Filter) - Tire Rotation and Inspection - Brake System Inspection - Fluid Level Checks (Coolant, Brake, Power Steering)

Est. shop cost: $150 - $250

10,000 mi

Unlock the full maintenance guide for every scheduled service interval and cost forecast.

Full pre-purchase inspection checklist
Complete maintenance schedule (4 service intervals)
Repair forecasts with mileage and cost context
Full buyer-fit guidance and who should avoid it
Full specs and trim-level context
4 recall campaign details & remedy notes
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FAQ

FAQ

Is the 2015 Audi S8 reliable?▾

The CarFocal Reliability Score for the 2015 Audi S8 is 8.4/10. Reliability score is 8.4/10. NHTSA recalls: 4. Owner complaints: 0.

How practical is the 2015 Audi S8 for daily use?▾

Practicality score is 3.7/10. The score is mainly limited by high fuel consumption. EPA combined economy is 20 MPG. 4 passenger doors are listed.

What is the overall score for the 2015 Audi S8?▾

The CarFocal Overall Score for the 2015 Audi S8 is 5.9/10. Overall score is 5.9/10 (Mixed). Confidence 55%. Maintenance 7.1/10. Practicality 3.7/10.

What does it cost to own and maintain a 2015 Audi S8?▾

Based on Carfocal's data, First listed service: - Oil Change (5W-40 Synthetic) (Parts: 5W-40 Synthetic Oil, Oil Filter) - Tire Rotation and Inspection - Brake System Inspection - Fluid Level Checks (Coolant, Brake, Power Steering) at 10,000 miles. Estimated first-year maintenance: $1,000 - $1,500. Repair prediction highlight: Fuel Lines (typical at 75,000 miles, estimated cost Min: $500 • Max: $1500).

What engine is in the 2015 Audi S8?▾

Engine specs list 8 • 4.0.

What transmission does the 2015 Audi S8 use?▾

According to CarFocal's specs for the 2015 Audi S8, transmission is Automatic (S8). The paired drivetrain is All-Wheel Drive.

Does the 2015 S8 require Premium gas?▾

Manufacturer fuel recommendation: Premium.

What is the combined EPA MPG for the 2015 Audi S8?▾

EPA combined estimate is 20 MPG.

What driver assistance and safety features are available on the 2015 Audi S8?▾

1 standard driver assistance features. Key features include Tire Pressure Monitoring System.

What body style is the 2015 Audi S8?▾

According to CarFocal's specs for the 2015 Audi S8, body style is sedan.

What drivetrain does the 2015 Audi S8 use?▾

According to CarFocal's specs for the 2015 Audi S8, drivetrain is All-Wheel Drive. Transmission is Automatic (S8).

Are there open safety recalls on the 2015 Audi S8?▾

This model year has 4 official safety campaigns listed.

Start Here

Maintenance guide

Costs + intervals

Recall report

Campaigns + remedy notes

Owner complaints

Issue volume + categories

In this guide

  1. 01Overview
  2. 02Who This Car Is For
  3. 03Reliability & Problems
  4. 04Vehicle Specs
  5. 05Unlock Full Report
  6. 06FAQ

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