2021 Audi A4 Report
Known issues, recalls, running costs, and what to check before you buy.

Overall Score
Key Takeaways
- The 2021 Audi A4 has a 'Below Average' reliability verdict, primarily due to a high volume of safety-related recalls.
- Key recall areas include seat belt retractors and rear axle components, indicating potential systemic issues.
- Despite numerous recalls, consumer complaint counts are zero, suggesting proactive manufacturer intervention or data limitations.
- The vehicle achieves a strong 5-star overall NHTSA safety rating, with perfect scores in side and rollover impacts.
2021 Audi A4
Critical Failure Risk
Recalls indicate potential issues with rear axle lock nuts and alignment. This can lead to compromised structural integrity and uneven tire wear over time.
Early detection can help you avoid a $200-$600 repair.
Safety & Bulletins
Owner Complaints
No primary complaint themes found.
Performance & Efficiency
Reliability
Practicality
The score is dragged down by its weaker day-to-day practicality signals.
Who This Car Is For
Best for
Drivers seeking a premium compact sedan with strong safety credentials.
+2 more buyer-fit notes in the full report
Avoid if
Buyers prioritizing absolute long-term reliability and minimal repair concerns.
+2 more buyer-fit warnings in the full report
2021 Audi A4 Reliability Analysis
Explore comprehensive reliability data including official safety recalls, consumer complaints, and common mechanical failures for the 2021 Audi A4.
Vehicle Specs
- Fuel Type
- Premium
- Seating Capacity
- 5
- Transmission
- Automatic
- Drivetrain
- AWD/All-Wheel Drive
- Body Style
- Chassis Cab
- EPA Combined MPG
- 26
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Most Common Issues
1. Rear Axle Integrity
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
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FAQ
Is the 2021 Audi A4 reliable?
The CarFocal Reliability Score for the 2021 Audi A4 is 7.6/10. Reliability score is 7.6/10. NHTSA recalls: 46. Owner complaints: 0.
How practical is the 2021 Audi A4 for daily use?
Practicality score is 4.7/10. The score is dragged down by its weaker day-to-day practicality signals. EPA combined economy is 26 MPG. Seating capacity is 5.
What is the overall score for the 2021 Audi A4?
The CarFocal Overall Score for the 2021 Audi A4 is 7.4/10. Overall score is 7.4/10 (Good). Confidence 85%. Maintenance 7.5/10. Practicality 4.7/10.
What does it cost to own and maintain a 2021 Audi A4?
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: $800 - $1,500. Repair prediction highlight: Rear Axle Components (typical at 75,000 miles, estimated cost Min: $500 • Max: $1,500).
What is the MSRP range for the 2021 Audi A4?
Base MSRP is $39,100.
What engine is in the 2021 Audi A4?
Engine specs list 4 • 2.0.
What transmission does the 2021 Audi A4 use?
According to CarFocal's specs for the 2021 Audi A4, transmission is Automatic. The paired drivetrain is AWD/All-Wheel Drive.
Does the 2021 A4 require Premium gas?
Manufacturer fuel recommendation: Premium.
What is the combined EPA MPG for the 2021 Audi A4?
EPA combined estimate is 26 MPG.
What driver assistance and safety features are available on the 2021 Audi A4?
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 A4?
According to CarFocal's specs for the 2021 Audi A4, seating capacity is 5.
What body style is the 2021 Audi A4?
According to CarFocal's specs for the 2021 Audi A4, body style is chassis_cab.
What drivetrain does the 2021 Audi A4 use?
According to CarFocal's specs for the 2021 Audi A4, drivetrain is AWD/All-Wheel Drive. Transmission is Automatic.
What are the NHTSA safety ratings for the 2021 Audi A4?
NHTSA ratings: Overall 5/5 • Frontal 4/5 • Side 5/5 • Rollover 5/5.
Are there open safety recalls on the 2021 Audi A4?
This model year has 46 official safety campaigns listed.
Should buyers consider alternatives to the 2021 Audi A4?
Alternatives listed in this guide: 2021 Mercedes-Benz C-Class and 2021 Lexus ES.