2021 Audi S8 Report
Known issues, recalls, running costs, and what to check before you buy.
Overall Score
Key Takeaways
- Approach with caution: Engine Control Module (ECM) malfunction due to moisture ingress is a primary concern, potentially leading to significant drivability issues and repair expenses.
- Verify all 54 recalls have been completed, especially those affecting the ECM and rear seat belt retractors.
- While complaints are zero, the high recall count suggests potential underlying quality control issues that warrant thorough inspection.
- The premium fuel requirement and 16 MPG combined fuel economy will contribute to higher running costs.
2021 Audi S8
The 2021 Audi S8 offers a compelling blend of potent performance and sophisticated luxury, but used car shoppers must be aware of its reliability record. Despite zero consumer complaints, a significant number of recalls, particularly concerning the ECM and seat belts, signal potential systemic issues. Its powerful 4.0-liter V8 engine paired with an automatic transmission and all-wheel drive delivers brisk acceleration, though fuel economy is modest at a combined 16 MPG. Potential repair costs associated with its complex systems are a significant factor for long-term ownership.
Critical Failure Risk
The Engine Control Module (ECM) can suffer from moisture ingress due to a missing sealing pin, leading to module malfunction and potential engine issues. This is a critical failure mode.
Early detection can help you avoid a $1,500-$3,000 repair.
Safety & Bulletins
Owner Complaints
No primary complaint themes found.
Performance & Efficiency
Reliability
Practicality
The score is mainly limited by high fuel consumption.
Who This Car Is For
Best for
Discerning buyers prioritizing performance and luxury over long-term, worry-free reliability.
+2 more buyer-fit notes in the full report
Avoid if
Budget-conscious buyers seeking minimal maintenance and predictable running costs.
+2 more buyer-fit warnings in the full report
2021 Audi S8 Reliability Analysis
Explore comprehensive reliability data including official safety recalls, consumer complaints, and common mechanical failures for the 2021 Audi S8.
Vehicle Specs
- Fuel Type
- Premium
- Seating Capacity
- 5
- Transmission
- Automatic
- Drivetrain
- AWD/All-Wheel Drive
- Body Style
- Sedan
- EPA Combined MPG
- 16
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Most Common Issues
1. ECM Moisture Ingress
Most reportedUsage data observed
2. Rear Seat Belt Retractor Malfunction
Usage data observed
First Service Interval
- Oil Change (5W-40 Synthetic) (Parts: 5W-40 Synthetic Oil, Oil Filter, Drain Plug Washer) - Tire Rotation and Inspection - Brake System Inspection - Cabin Air Filter Replacement
Est. shop cost: $300 - $500
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FAQ
Is the 2021 Audi S8 reliable?
The CarFocal Reliability Score for the 2021 Audi S8 is 7.2/10. Reliability score is 7.2/10. NHTSA recalls: 54. Owner complaints: 0.
How practical is the 2021 Audi S8 for daily use?
Practicality score is 3.1/10. The score is mainly limited by high fuel consumption. EPA combined economy is 16 MPG. Seating capacity is 5.
What is the overall score for the 2021 Audi S8?
The CarFocal Overall Score for the 2021 Audi S8 is 5.6/10. Overall score is 5.6/10 (Mixed). Confidence 55%. Maintenance 7.7/10. Practicality 3.1/10.
What does it cost to own and maintain a 2021 Audi S8?
Based on Carfocal's data, First listed service: - Oil Change (5W-40 Synthetic) (Parts: 5W-40 Synthetic Oil, Oil Filter, Drain Plug Washer) - Tire Rotation and Inspection - Brake System Inspection - Cabin Air Filter Replacement at 10,000 miles. Estimated first-year maintenance: $600 - $1,000. Repair prediction highlight: ECM (Engine Control Module) (typical at 60,000 miles, estimated cost Min: $1,500 • Max: $3,000+).
What is the MSRP range for the 2021 Audi S8?
Base MSRP is $84,400.
What engine is in the 2021 Audi S8?
Engine specs list 8 • 4.0.
What transmission does the 2021 Audi S8 use?
According to CarFocal's specs for the 2021 Audi S8, transmission is Automatic. The paired drivetrain is AWD/All-Wheel Drive.
Does the 2021 S8 require Premium gas?
Manufacturer fuel recommendation: Premium.
What is the combined EPA MPG for the 2021 Audi S8?
EPA combined estimate is 16 MPG.
What driver assistance and safety features are available on the 2021 Audi S8?
11 standard and 3 optional driver assistance features. Key features include Anti-lock Braking System, Electronic Stability Control, Traction Control.
How many people fit in a 2021 Audi S8?
According to CarFocal's specs for the 2021 Audi S8, seating capacity is 5.
What body style is the 2021 Audi S8?
According to CarFocal's specs for the 2021 Audi S8, body style is sedan.
What drivetrain does the 2021 Audi S8 use?
According to CarFocal's specs for the 2021 Audi S8, drivetrain is AWD/All-Wheel Drive. Transmission is Automatic.
Are there open safety recalls on the 2021 Audi S8?
This model year has 54 official safety campaigns listed.