2021 Audi S4 Report
Known issues, recalls, running costs, and what to check before you buy.
Overall Score
Key Takeaways
- The 2021 Audi S4 has a 'Below Average' reliability rating, primarily due to a high number of recalls.
- Key recall areas include seat belts (rear retractor issues) and rear suspension (axle lock nut failures and alignment).
- Despite numerous recalls, there are zero reported consumer complaints, suggesting issues may be caught proactively.
- Fuel economy is respectable for its class, with a combined EPA rating of 23 MPG.
2021 Audi S4
Critical Failure Risk
Recalls indicate potential failures with rear axle lock nuts and alignment concerns. This can lead to suspension instability and accelerated tire wear.
Early detection can help you avoid a $500-$1,500 repair.
Safety & Bulletins
Owner Complaints
No primary complaint themes found.
Performance & Efficiency
Reliability
Practicality
The score is mainly limited by high fuel consumption, and small boot.
Who This Car Is For
Best for
Enthusiasts seeking a blend of luxury, performance, and all-weather capability.
+2 more buyer-fit notes in the full report
Avoid if
Budget-conscious buyers prioritizing long-term, worry-free ownership.
+2 more buyer-fit warnings in the full report
2021 Audi S4 Reliability Analysis
Explore comprehensive reliability data including official safety recalls, consumer complaints, and common mechanical failures for the 2021 Audi S4.
Vehicle Specs
- Fuel Type
- Premium
- Seating Capacity
- 5
- Transmission
- Automatic
- Drivetrain
- AWD/All-Wheel Drive
- Body Style
- Sedan
- EPA Combined MPG
- 23
CarFocal account required
See the full 2021 Audi S4 buyer report before you decide
Most Common Issues
1. Rear Suspension Issues
Most reportedUsage data observed
2. Seat Belt Retractor Malfunction
Usage data observed
First Service Interval
- Oil Change (5W-40 Synthetic) (Parts: 5W-40 Synthetic Oil, Oil Filter) - Tire Rotation and Inspection - Brake System Inspection
Est. shop cost: $150 - $250
Unlock the full maintenance guide for every scheduled service interval and cost forecast.
Free • Takes 20 seconds • Saves Thousands $
Already have an account? Log in
FAQ
Is the 2021 Audi S4 reliable?
The CarFocal Reliability Score for the 2021 Audi S4 is 7.6/10. Reliability score is 7.6/10. NHTSA recalls: 46. Owner complaints: 0.
How practical is the 2021 Audi S4 for daily use?
Practicality score is 4.7/10. The score is mainly limited by high fuel consumption, and small boot. EPA combined economy is 23 MPG. Seating capacity is 5. 4 passenger doors are listed. Boot capacity is 340 litres.
What is the overall score for the 2021 Audi S4?
The CarFocal Overall Score for the 2021 Audi S4 is 6.6/10. Overall score is 6.6/10 (Good). Confidence 55%. Maintenance 8.5/10. Practicality 4.7/10.
What does it cost to own and maintain a 2021 Audi S4?
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 at 10,000 miles. Estimated first-year maintenance: $300 - $500. Repair prediction highlight: Rear Suspension Components (typical at 75,000 miles, estimated cost Min: $500 • Max: $1,500).
What is the MSRP range for the 2021 Audi S4?
Base MSRP is $49,900.
What engine is in the 2021 Audi S4?
Engine specs list 6 • 3.0.
What transmission does the 2021 Audi S4 use?
According to CarFocal's specs for the 2021 Audi S4, transmission is Automatic. The paired drivetrain is AWD/All-Wheel Drive.
Does the 2021 S4 require Premium gas?
Manufacturer fuel recommendation: Premium.
What is the combined EPA MPG for the 2021 Audi S4?
EPA combined estimate is 23 MPG.
What driver assistance and safety features are available on the 2021 Audi S4?
12 standard driver assistance features. Key features include Anti-lock Braking System, Electronic Stability Control, Traction Control.
How many people fit in a 2021 Audi S4?
According to CarFocal's specs for the 2021 Audi S4, seating capacity is 5.
What body style is the 2021 Audi S4?
According to CarFocal's specs for the 2021 Audi S4, body style is sedan.
What drivetrain does the 2021 Audi S4 use?
According to CarFocal's specs for the 2021 Audi S4, drivetrain is AWD/All-Wheel Drive. Transmission is Automatic.
What are the NHTSA safety ratings for the 2021 Audi S4?
NHTSA ratings: Rollover 5/5.
Are there open safety recalls on the 2021 Audi S4?
This model year has 46 official safety campaigns listed.
Should buyers consider alternatives to the 2021 Audi S4?
Alternatives listed in this guide: 2021 Mercedes-Benz C-Class and 2021 Genesis G70.