AUDI S4 Sedan
The Audi S4 Sedan is a compact luxury sport sedan available exclusively in a four-door body style, equipped with a turbocharged 3.0-liter V6 engine producing 349 horsepower and 369 lb-ft of torque. It uses an 8-speed automatic transmission paired with Audi’s quattro all-wheel drive system. Real-world fuel economy typically ranges from approximately 20 miles per gallon in city driving to 27 mpg on highways. The interior offers generous space with front legroom around 41.3 inches and rear legroom near 35.7 inches, while the trunk volume is about 12 cubic feet. Safety is comprehensive, featuring multiple airbags including side seat-mounted and curtain airbags, knee airbags, ABS, traction control, and advanced driver assistance systems such as distance pacing cruise control.
The Audi S4 stands out for its blend of performance, refined interior, and standard all-wheel drive, providing confident handling in various conditions. It maintains strong resale value relative to many competitors. However, it is not without drawbacks; some owners report minor electrical gremlins and higher maintenance costs typical of European luxury cars. Fuel economy, while respectable, lags behind some rivals with smaller engines or hybrid options. The rear seat can feel somewhat tight for taller passengers compared to larger sport sedans. Overall, the S4 balances sporty driving with everyday usability, though buyers should budget for premium maintenance and be aware of the less spacious rear cabin.
Key specs and highlights
The Audi S4 Sedan is powered by a 3.0-liter intercooled turbocharged V6 engine generating 349 horsepower at 6,300 rpm and 369 lb-ft of torque at 3,200 rpm. Its 8-speed automatic transmission with overdrive smoothly transfers power to all four wheels via Audi’s quattro AWD system, enhancing traction and stability in wet or slippery conditions. The S4’s sport-tuned suspension pairs with 19-inch forged aluminum wheels to deliver a precise and responsive driving experience. Measuring roughly 188 inches in length, the sedan provides a balanced interior with 41.3 inches of front legroom and 35.7 inches for rear passengers, along with a 12 cubic-foot trunk for cargo.
Standard features include LED headlights with automatic high beam control, rain-sensing wipers, a 10.1-inch touchscreen with Audi’s MMI infotainment system supporting Apple CarPlay and Android Auto, and a premium 10-speaker audio setup. Safety technologies are extensive, including multi-stage airbags, adaptive cruise control with distance pacing, anti-lock brakes, and driver-assist features designed to prevent collisions and maintain vehicle control. The cabin combines luxury materials and ergonomic design to balance comfort, performance, and technology integration.
Driving experience
The Audi S4 delivers an engaging and confident driving experience. Its turbocharged engine provides smooth and immediate power delivery, allowing for brisk acceleration while maintaining refinement. The eight-speed automatic transmission shifts precisely, enhancing both spirited driving and relaxed cruising.
Handling is agile thanks to the sport-tuned suspension and quattro all-wheel drive, which ensures excellent grip in corners and stability over varied road surfaces. The ride strikes a balance between comfort and firmness, absorbing most road imperfections without sacrificing composure. Braking performance is strong and predictable, instilling confidence in demanding driving scenarios.
Cabin noise is well controlled, though the engine and tires become noticeable under hard acceleration. The seats offer generous bolstering to hold occupants securely during spirited maneuvers, while visibility is generally good due to slim pillars and a well-designed mirror setup. Daily usability is enhanced by comfortable seating positions and intuitive controls, making the S4 suitable for both long highway drives and urban commuting.
Trims and equipment
The 2025 Audi S4 Sedan is offered in three main trims: Premium, Premium Plus, and Prestige. The base Premium trim includes all-wheel drive, 19-inch wheels, sport suspension, LED lighting, rain-sensing wipers, and the 3.0-liter turbo V6 paired with an 8-speed auto.
Upgrading to Premium Plus adds convenience and technology features like a larger MMI touchscreen with navigation, wireless smartphone integration, heated front seats, and advanced driver-assistance options. The Prestige trim further introduces luxury amenities such as a Bang & Olufsen premium sound system, four-zone automatic climate control, a head-up display, and enhanced safety technologies.
Must-have options often include the Driver Assistance package for added safety features, and the Convenience package for rear USB ports and additional comfort enhancements. Buyers should consider how much tech and luxury they need versus budget, as the base Premium trim offers a strong performance and feature foundation.
Reliability and maintenance
Audi S4 models generally benefit from strong engineering but can incur higher maintenance costs compared to mainstream sedans. Common issues reported involve minor electrical glitches and occasional sensor failures, often related to the infotainment or driver assist systems.
Regular maintenance intervals include oil changes roughly every 10,000 miles and scheduled inspections of the drivetrain and suspension components. Routine maintenance costs are elevated due to premium parts and labor rates expected of a luxury European vehicle. Prospective buyers should confirm service history and look for proper preventative care.
Despite some minor quirks, the S4’s overall reliability is considered good for its class, supported by a comprehensive warranty. Keeping up with scheduled maintenance and addressing issues promptly can help minimize ownership headaches.
Fuel economy and running costs
The Audi S4 Sedan’s EPA-estimated fuel economy hovers around 20 miles per gallon in city driving, improving to about 27 mpg on the highway. Real-world figures typically align with these numbers, although spirited driving may reduce efficiency.
Running costs include premium gasoline requirements and higher insurance premiums typical of performance sedans. Depreciation is moderate, with the S4 holding value better than many competitors, partly due to its blend of performance and luxury.
Ownership expenses should factor in routine maintenance, occasional repairs, and consumables like tires and brakes, which may wear faster than those on a standard midsize sedan. Overall, fuel economy is competitive but not exceptional within the luxury sport sedan segment.
Safety and driver assistance
Safety is a priority in the Audi S4, which comes equipped with extensive passive and active systems. Standard airbags cover front, side, knee, and curtain positions, providing multi-layered occupant protection.
The car includes advanced safety technologies such as anti-lock brakes, electronic stability control, traction control, and driver aids like adaptive cruise control with distance pacing, and collision mitigation features. LED headlights with automatic high beams and rain-sensing wipers enhance visibility in poor conditions.
While formal crash test ratings vary, the S4’s safety equipment and build quality reflect its premium positioning and commitment to occupant protection.
Model history and changes
The Audi S4 has evolved through multiple generations since debuting in the early 1990s, consistently emphasizing a balance between sportiness and luxury. Earlier models utilized naturally aspirated V6 and V8 engines, transitioning to turbocharged V6s to improve efficiency and emissions without sacrificing power.
The current generation S4 uses a refined 3.0-liter turbo V6 with mild-hybrid technology in some markets, improving throttle response and fuel economy. Over the years, improvements in chassis dynamics, interior technology, and safety have kept the S4 competitive against newer rivals.
Among used models, buyers often favor the latest generations for their enhanced technology, smoother performance, and improved reliability, while earlier S4s are prized for rawer driving experiences but may lack modern conveniences.
Competitors and alternatives
Key competitors include the BMW M340i, Mercedes-AMG C43, and the Alfa Romeo Giulia Quadrifoglio. Compared to these, the Audi S4 offers a more balanced interior quality and excellent all-weather capability due to quattro all-wheel drive.
While the BMW emphasizes rear-wheel-drive sport dynamics and the Mercedes AMG emphasizes high power and luxury, the S4 provides a precise mix of handling, comfort, and technological sophistication. The Giulia delivers sharp handling but lacks the S4’s overall refinement and trunk space.
Budget-conscious buyers may consider these alternatives depending on preference for driving feel, luxury features, or brand cachet.
Buying advice and verdict
The Audi S4 Sedan suits buyers seeking a refined yet sporty luxury sedan with dependable all-wheel drive and a high-tech cabin. It excels as a daily driver offering both comfort and performance but requires a willingness to accept premium maintenance costs.
Core strengths include its powerful yet efficient engine, precise handling, and upscale interior materials with intuitive infotainment. Potential drawbacks involve rear passenger space limitations and the complexity of certain electronic systems which may lead to maintenance concerns.
Buyers should check for a full service history, verify that all electronics and driver aids function correctly, and test drive to assess comfort and driving feel to ensure the car meets expectations. Overall, the Audi S4 remains a compelling choice in the sport-luxury sedan segment, delivering balanced performance and everyday usability.