The Audi S4 is a performance-oriented version of the A4 sedan, offering enhanced power and sporty handling. The 2021 S4 is part of the B9 generation, available as a four-door sedan. Key trims include Premium, Premium Plus, and Prestige. Known for its refined interior, potent engine, and standard Quattro all-wheel drive, the 2021 S4 provides a compelling blend of performance and luxury. Original MSRP ranged from approximately $51,000 to $60,000+ depending on trim and options.
The Good
The 2021 Audi S4 boasts impressive performance with its turbocharged V6 and Quattro all-wheel drive, appealing to driving enthusiasts. Practical buyers appreciate its comfortable and well-appointed interior, solid build quality, and advanced technology. It offers a good balance of sporty driving dynamics, everyday usability, and a prestigious brand image. The sophisticated design adds to its emotional appeal.
The Bad
Some potential weaknesses of the 2021 Audi S4 include higher maintenance costs compared to some competitors, a somewhat firm ride (especially with optional sport suspension), and potentially expensive repairs. The infotainment system, while advanced, can have a steeper learning curve. Additionally, some may find the styling too understated for a performance sedan.
2021 Audi S4: Quick Overview
- Engine Options: 3.0-liter turbocharged V6
- Horsepower: 349 hp
- Torque: 369 lb-ft
- Fuel Economy:
- City: 21 mpg
- Highway: 30 mpg
- Combined: 24 mpg
- 0–60 Times: Approximately 4.4 seconds
- Towing Capacity: Not recommended for towing
- Trim-Level Features:
- Premium:
- Standard Quattro all-wheel drive
- 18-inch wheels
- Sport-tuned suspension
- Leather upholstery
- Heated front seats
- Tri-zone automatic climate control
- Audi connect CARE assistance and security services
- Apple CarPlay and Android Auto
- 10.1-inch touchscreen display
- Audi pre sense basic and city
- Premium Plus (adds to Premium):
- Matrix-design LED headlights
- Virtual Cockpit (12.3-inch digital instrument cluster)
- Adaptive cruise control
- Lane keep assist
- Blind spot monitoring with rear cross-traffic alert
- Bang & Olufsen sound system (optional)
- Prestige (adds to Premium Plus):
- Head-up display
- Navigation system
- Traffic sign recognition
- Park assist
- Heated rear seats
- Power rear sunshade
- Premium:
2021 Audi S4 Specifications
Vehicle Information
| Year | 2021 |
| Make | Audi |
| Model | S4 |
| Trim | - |
| Style | All-Wheel Drive 3.0-T |
| Type | Sedan |
| Category | Minicompact Car |
Manufacturing Details
| Made In | Germany |
| Manufacturing City | INGOLSTADT |
Dimensions
| Doors | 4-Door |
| Curb Weight | 1744.97 kg |
| Gross Vehicle Weight Rating | - |
| Overall Height | 142.75 cm |
| Overall Length | 476.25 cm |
| Overall Width | 184.66 cm |
| Wheelbase Length | 281.94 cm |
| Standard Seating | 5 |
Engine & Performance
| Engine | 3.0-L V-6 |
| Engine Size | 3L |
| Engine Cylinders | 6 |
| Transmission | 8-Speed Automatic |
| Transmission Type | Automatic |
| Transmission Speeds | 8-Speed |
| Drivetrain | All-Wheel Drive |
Additional Features
| Anti-Brake System | 4-Wheel ABS |
| Steering Type | Rack & Pinion |
Pricing
| Manufacturer Suggested Retail Price (MSRP) | $50,945 USD |
| Invoice Price | $47,952 USD |
| Delivery Charges | $1,045 USD |
Vehicle History Report
Vehicle
Specifications
Specifications
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All History
Events
Events
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Theft
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Open Lien
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Past Sale
Listings
Listings
Safety
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Market Price
Analysis
Analysis
What Problems Does the 2021 Audi S4 Have?
While the 2021 Audi S4 generally enjoys good reliability ratings, some owners have reported issues. Common concerns include:
- Infotainment System Glitches: Some users have experienced occasional software glitches with the MMI system, including screen freezes, delayed responses, or connectivity problems.
- Water Pump Failure: Although not widespread, some Audi vehicles with the 3.0T engine have experienced water pump failures, which can lead to overheating if not addressed promptly.
- Thermostat Housing Leaks: Similar to the water pump, the thermostat housing may develop leaks over time, requiring replacement.
- Oil Leaks: Some owners have noted minor oil leaks, particularly around the valve cover gaskets, as the vehicle ages.
- Carbon Buildup: Direct-injection engines, like the one in the S4, are susceptible to carbon buildup on the intake valves, which can reduce performance and fuel economy over time. Regular cleaning may be necessary.
How long will the 2021 Audi S4 last?
With consistent maintenance and responsible driving, the 2021 Audi S4 can reasonably achieve 150,000 to 200,000 miles or 10-15 years of service. Long-term durability depends heavily on adherence to Audi's recommended service intervals. Potential weaknesses over time include the aforementioned issues like carbon buildup, water pump/thermostat issues, and potential electronic gremlins. Addressing these concerns proactively will contribute significantly to the car's longevity. Using quality parts and fluids also impacts the long term health.
What Technology & Safety Features are Included?
The 2021 Audi S4 features a comprehensive suite of technology. Standard features include a 10.1-inch touchscreen infotainment system with Apple CarPlay and Android Auto integration, Audi connect CARE, and Audi pre sense basic and city (automatic emergency braking). Higher trims add the Virtual Cockpit, a 12.3-inch digital instrument cluster, offering customizable displays. Entertainment options include a Bang & Olufsen sound system (optional on Premium Plus).
Driver-assistance features are plentiful. Standard features include rearview camera, while available options include adaptive cruise control, lane keep assist, blind-spot monitoring, rear cross-traffic alert, park assist, and a head-up display. These enhance both convenience and safety.
Safety is a priority, and the 2021 S4 typically receives high crash-test ratings from the IIHS and NHTSA. It includes standard features like multiple airbags, anti-lock brakes, and stability control. Available features contribute to accident avoidance. Note that the NHTSA and IIHS ratings may vary slightly year to year and should be verified before purchasing.
Driver-assistance features are plentiful. Standard features include rearview camera, while available options include adaptive cruise control, lane keep assist, blind-spot monitoring, rear cross-traffic alert, park assist, and a head-up display. These enhance both convenience and safety.
Safety is a priority, and the 2021 S4 typically receives high crash-test ratings from the IIHS and NHTSA. It includes standard features like multiple airbags, anti-lock brakes, and stability control. Available features contribute to accident avoidance. Note that the NHTSA and IIHS ratings may vary slightly year to year and should be verified before purchasing.
What Colors Options are Available?
Exterior Colors
Navarra Blue Metallic
Mythos Black Metallic
Glacier White Metallic
Daytona Gray Pearl Effect
District Green Metallic
Tango Red Metallic
Quantum Gray
Interior Colors
Black
Rotor Gray
Magma Red
2021 Audi S4 Prices and Market Value
The 2021 Audi S4 had a starting MSRP of around $51,000, with higher trims reaching $60,000+. As of late 2024, used prices range from approximately $30,000 to $45,000, depending on condition, mileage, and trim. Depreciation is moderate, influenced by factors like mileage, condition, maintenance history, and optional equipment. Well-maintained examples with lower mileage and desirable options (like the Bang & Olufsen sound system or sport package) tend to hold their value better. Market demand for performance sedans also plays a role. Color also affects resale value.
2021 Audi S4 Cost of Ownership
The 2021 Audi S4 falls into the category of a moderately costly vehicle to own long-term. Insurance premiums are higher than average due to its performance capabilities. Fuel costs are reasonable, but premium fuel is required. Maintenance, including scheduled services and potential repairs, can be more expensive than average, particularly if performed at a dealership. Adhering to the recommended maintenance schedule and addressing issues promptly is crucial for controlling long-term ownership expenses.
2021 Audi S4 Fuel Efficiency
Fuel Type
Gasoline
Fuel Capacity
38.61 liters
City Mileage
4.89 km/l
Highway Mileage
3.61 km/l
2021 Audi S4 Safety Rating
NHTSA
2021 Audi S4 Recalls & Defects
Suspension:rear:axle:non-Powered Axle Assembly
Recall date
2021-04-26
Recall no.
21v295000
Source
NHTSA
Summary
Volkswagen Group OF America, Inc. (Audi) IS Recalling Certain 2021 Q7, Q8, Q5 Sportback, SQ5 Sportback, RS6 Avant, Rs7, RS Q8, 2020-2021 Audi S6 Sedan, Q5, A8, S8, A7, A6 Allroad, A5 Cabriolet, A4 Sedan, A4 Allroad, Sq5, S7, A6 Sedan, S5 Coupe, S4 Sedan, S5 Cabriolet, A5 Coupe, 2019-2021 RS5 Coupe, A5 Sportback, S5 Sportback, RS5 Sportback Vehicles. THE Lock NUT ON THE Trailing ARM OF THE Rear Axle MAY Break DUE TO Stress Corrosion.
Consequence
A Broken Lock NUT MAY Misalign THE Rear Axle, Causing A Loss OF Control and Increasing THE Risk OF A Crash.
Remedy
Dealers Will Replace THE Lock Nuts And, IF Necessary, THE Associated Bolts, Free OF Charge. Owner Notification Letters Were Mailed June 4, 2021. Owners MAY Contact Audi Customer Service AT 1-800-253-2834. Audi's Number FOR This Recall IS 42l1.
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.
Suspension:rear:axle:non-Powered Axle Assembly
Recall date
2022-01-26
Recall no.
22v034000
Source
NHTSA
Summary
Volkswagen Group OF America, Inc. (Audi) IS Recalling Certain 2019-2021 Audi A5 Sportback, RS5 Coupe, RS5 Sportback, S5 Sportback, 2020-2021 A4 Allroad, A4 Sedan, A5 Cabriolet, A5 Coupe, A6 Allroad, A6 Sedan, A7, A8, Q5, S4 Sedan, S5 Coupe, S5 Cabriolet, S6 Sedan, S7, S8, Sq5, 2021 Q5 Sportback, Q7, Q8, RS6 Avant, Rs7, Rsq8, SQ5 Sportback, Sq7, and SQ8 Vehicles. THE Rear Axle Alignment MAY NOT Have Been Inspected After THE Repairs FOR Recall 21v-295 (42l1) Were Performed.
Consequence
Rear Axle Misalignment MAY Cause Premature or Uneven Tire Wear, Increasing THE Risk OF A Crash.
Remedy
Dealers Will Inspect THE Rear Axle, Adjust THE Alignment AS Necessary, and Replace ANY Prematurely or Unevenly Worn Tires, Free OF Charge. Owner Notification Letters Were Mailed March 3, 2022. Owners MAY Contact Audi Customer Service AT 1-800-253-2834. Audi's Number FOR This Recall IS 42l5.
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.
Tires
Recall date
2022-01-26
Recall no.
22v034000
Source
NHTSA
Summary
Volkswagen Group OF America, Inc. (Audi) IS Recalling Certain 2019-2021 Audi A5 Sportback, RS5 Coupe, RS5 Sportback, S5 Sportback, 2020-2021 A4 Allroad, A4 Sedan, A5 Cabriolet, A5 Coupe, A6 Allroad, A6 Sedan, A7, A8, Q5, S4 Sedan, S5 Coupe, S5 Cabriolet, S6 Sedan, S7, S8, Sq5, 2021 Q5 Sportback, Q7, Q8, RS6 Avant, Rs7, Rsq8, SQ5 Sportback, Sq7, and SQ8 Vehicles. THE Rear Axle Alignment MAY NOT Have Been Inspected After THE Repairs FOR Recall 21v-295 (42l1) Were Performed.
Consequence
Rear Axle Misalignment MAY Cause Premature or Uneven Tire Wear, Increasing THE Risk OF A Crash.
Remedy
Dealers Will Inspect THE Rear Axle, Adjust THE Alignment AS Necessary, and Replace ANY Prematurely or Unevenly Worn Tires, Free OF Charge. Owner Notification Letters Were Mailed March 3, 2022. Owners MAY Contact Audi Customer Service AT 1-800-253-2834. Audi's Number FOR This Recall IS 42l5.
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.
Seat Belts
Recall date
2021-08-05
Recall no.
21v606000
Source
NHTSA
Summary
Volkswagen Group OF America, Inc. (Volkswagen) IS Recalling Certain 2021 Volkswagen Id4, Audi A4 Allroad, A4 Sedan, A5 Cabriolet, A5 Coupe, A5 Sportback, A6 Allroad, A6 Sedan, A7, A8, E-Tron Quattro, E-Tron Sportback Quattro, Q3, Q5, Q5 Sportback, Q7, Q8, RS5 Sportback, RS5 Coupe, RS6 Avant, Rs7, Rsq8, S4 Sedan, S5 Cabriolet, S5 Coupe, S5 Sportback, S6 Sedan, S7, S8, Sq5, SQ5 Sportback, Sq7, Sq8, and 2021-2022 S3 Sedan Vehicles. THE Rear Seat Belt Automatic Locking Retractors MAY Deactivate Early, Which CAN Prevent THE Child Restraint System From Securing Properly. AS Such, These Vehicles Fail TO Comply With THE Requirements OF Federal Motor Vehicle Safety Standard Number 208, "occupant Crash Protection."
Consequence
AN Unsecured Child Restraint System CAN Increase THE Risk OF Injury During A Crash.
Remedy
Dealers Will Inspect, and Replace AS Necessary, THE Middle-Rear Seat Belt Assemblies, Free OF Charge. Owner Notification Letters Were Mailed August 27, 2021. Owners MAY Contact Volkswagen Customer Service AT 1-800-893-5298 and Audi Customer Service AT 1-800-253-2834. Volkswagen's Numbers FOR This Recall ARE 69cr (Vw) and 69cs (Audi).
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.
Seat Belts:rear/Other:retractor
Recall date
2021-08-05
Recall no.
21v606000
Source
NHTSA
Summary
Volkswagen Group OF America, Inc. (Volkswagen) IS Recalling Certain 2021 Volkswagen Id4, Audi A4 Allroad, A4 Sedan, A5 Cabriolet, A5 Coupe, A5 Sportback, A6 Allroad, A6 Sedan, A7, A8, E-Tron Quattro, E-Tron Sportback Quattro, Q3, Q5, Q5 Sportback, Q7, Q8, RS5 Sportback, RS5 Coupe, RS6 Avant, Rs7, Rsq8, S4 Sedan, S5 Cabriolet, S5 Coupe, S5 Sportback, S6 Sedan, S7, S8, Sq5, SQ5 Sportback, Sq7, Sq8, and 2021-2022 S3 Sedan Vehicles. THE Rear Seat Belt Automatic Locking Retractors MAY Deactivate Early, Which CAN Prevent THE Child Restraint System From Securing Properly. AS Such, These Vehicles Fail TO Comply With THE Requirements OF Federal Motor Vehicle Safety Standard Number 208, "occupant Crash Protection."
Consequence
AN Unsecured Child Restraint System CAN Increase THE Risk OF Injury During A Crash.
Remedy
Dealers Will Inspect, and Replace AS Necessary, THE Middle-Rear Seat Belt Assemblies, Free OF Charge. Owner Notification Letters Were Mailed August 27, 2021. Owners MAY Contact Volkswagen Customer Service AT 1-800-893-5298 and Audi Customer Service AT 1-800-253-2834. Volkswagen's Numbers FOR This Recall ARE 69cr (Vw) and 69cs (Audi).
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.
Back Over Prevention:display Function
Recall date
2022-10-05
Recall no.
22v742000
Source
NHTSA
Summary
Volkswagen Group OF America, Inc. (Volkswagen) IS Recalling Certain 2021 Audi A8, Rs7, RS6 Avant, RS5 Sportback, RS5 Coupe, Q8, Q7, Q5 Sportback, S4 Sedan, Q5, A7, A6, A6 Allroad, A5 Sportback, A5 Coupe, A5 Cabrioleet, A4 Sedan, A4 Allroad, E-Tron Sportback Quattro, Sq7, S5 Cabriolet, E-Tron Quattro, Sq8, SQ5 Sportback, Sq5, S8, S7, S6 Sedan, S5 Sportback, S5 Coupe, 2022 E-tron GT, and 2021-2022 Rsq8 Vehicles. DUE TO A Software Issue, A Blank or Black Screen MAY BE Displayed Instead OF THE Rearview Camera Image When THE Vehicle IS Placed IN Reverse Gear. AS Such, These Vehicles Fail TO Comply With THE Requirements OF Federal Motor Vehicle Safety Standard Number 111, "rear Visibility."
Consequence
A Blank Rearview Camera Display CAN Reduce THE Driver's Rear Visibility, Increasing THE Risk OF A Crash.
Remedy
Dealers Will Update THE Infotainment Unit Software, Free OF Charge. Owner Notification Letters Were Mailed October 25, 2022. Owners MAY Contact Audi's Customer Service AT 1-800-253-2834. Volkswagen's Number FOR This Recall IS 91dz.
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.
2021 Audi S4 Warranty
Basic
Original warranty
48 months / 50,000 miles
Estimated remaining
Expired
Powertrain
Original warranty
48 months / 50,000 miles
Estimated remaining
Expired
Rust
Original warranty
144 months / unlimited miles
Estimated remaining
96 months / unlimited miles
2021 Audi S4 Insurance
Insurance for a 2021 Audi S4 is moderately priced, reflecting its status as a Sedan with strong safety ratings and
reasonable repair costs.
reasonable repair costs.
How Does the 2021 Audi S4 Compare to Other Sedan?
The 2021 Audi S4 competes with the BMW M340i, Mercedes-AMG C43, and Acura TLX Type S.
Performance: The S4 offers a balanced blend of power and handling, but the BMW M340i is often praised for its sharper driving dynamics, and the AMG C43 can have a more aggressive exhaust note. The Acura TLX Type S offers a similarly engaging experience.
Features: The S4 has a well-equipped interior and competitive technology. The BMW and Mercedes offer similar levels of luxury and tech, though the Audi Virtual Cockpit is a standout feature. The Acura TLX Type S is generally well-equipped for its price.
Reliability: Audi's reliability can be average. BMW and Mercedes can have similar maintenance needs. The Acura TLX is often viewed as a more reliable option, although the Type S is relatively new.
Price: The S4 typically falls in the middle of the pack in terms of price. The Acura TLX Type S tends to be more affordable.
Alternatives: If driving experience is paramount, the BMW M340i is an excellent choice. For value and potentially better reliability, the Acura TLX Type S is worth considering. The Mercedes-AMG C43 offers a more overtly sporty experience. Genesis G70 3.3T also offers comparable performance and luxury at a lower price point.
Performance: The S4 offers a balanced blend of power and handling, but the BMW M340i is often praised for its sharper driving dynamics, and the AMG C43 can have a more aggressive exhaust note. The Acura TLX Type S offers a similarly engaging experience.
Features: The S4 has a well-equipped interior and competitive technology. The BMW and Mercedes offer similar levels of luxury and tech, though the Audi Virtual Cockpit is a standout feature. The Acura TLX Type S is generally well-equipped for its price.
Reliability: Audi's reliability can be average. BMW and Mercedes can have similar maintenance needs. The Acura TLX is often viewed as a more reliable option, although the Type S is relatively new.
Price: The S4 typically falls in the middle of the pack in terms of price. The Acura TLX Type S tends to be more affordable.
Alternatives: If driving experience is paramount, the BMW M340i is an excellent choice. For value and potentially better reliability, the Acura TLX Type S is worth considering. The Mercedes-AMG C43 offers a more overtly sporty experience. Genesis G70 3.3T also offers comparable performance and luxury at a lower price point.
Ranks #844 Sedan
| 1 | 2023 Toyota Camry | (5.0★) |
| 2 | 2023 Honda Accord | (0.0★) |
| 3 | 2023 Lexus ES | (0.0★) |
| 4 | 2024 Subaru Legacy | (5.0★) |
| 5 | 2022 Mazda MX-30 | (4.0★) |
| 6 | 2024 BMW M3 | (0.0★) |
| 7 | 2023 Ford Mustang | (5.0★) |
| 8 | 2023 Mercedes-Benz AMG GT | (0.0★) |
| 9 | 2023 Audi A3 | (0.0★) |
| 10 | 2023 Chevrolet Camaro | (5.0★) |
| 11 | 2023 Hyundai Elantra Hybrid | (0.0★) |
| 12 | 2023 Nissan Altima | (4.0★) |
| 844 | 2021 Audi S4 | (0.0★) |
Final Verdict: Is the 2021 Audi S4 a Good Sedan?
The 2021 Audi S4 is a compelling choice for buyers seeking a refined and sporty sedan with all-weather capability. It's ideal for those who appreciate a comfortable interior, advanced technology, and strong performance. Whether it's worth buying depends on individual priorities and budget. A used 2021 S4 can offer excellent value, particularly a Premium Plus trim with desirable options. It's essential to have a pre-purchase inspection to assess its condition and maintenance history. For enthusiasts looking for a balance of luxury and performance, the S4 remains a strong contender.
Drew B
Drew is a seasoned automotive expert and contributor to VinCheck.info. With nearly 15 years of experience as a former Porsche technician, he brings a wealth of hands-on knowledge to his writing. Born in North Carolina, a region renowned for its deep-rooted NASCAR culture, Drew developed a passion for cars early in life, often building and working on vehicles from a young age. At VINCheck, Drew leverages his extensive technical background to provide in-depth analyses of various vehicles. His articles often focus on engine performance, reliability, and maintenance insights, offering readers practical information grounded in real-world experience. Some of his notable contributions include reviews on the Mazda CX-5's longevity and detailed examinations of engine options for models like the 2011 Toyota Camry and Tacoma