Power for the A4 comes from a 2.0L turbocharged 4-cylinder engine integrated with a 12-volt mild hybrid system, generating 261 horsepower and 273 lb-ft of torque. This powertrain pairs with a responsive 7-speed dual-clutch S tronic automatic transmission, directing power to either the front wheels or all four when equipped with Audi's quattro all-wheel-drive system. The quattro technology utilizes a locking center differential and wheel-selective torque control to optimize traction by directing power to the wheels with the greatest grip.

The performance-oriented S4 features a more potent 3.0L turbocharged V6 producing 349 horsepower and 369 lb-ft of torque. Power transfers to all four wheels through an 8-speed automatic transmission. The S4 achieves a 0-60 mph time of just 4.4 seconds.

The Audi Drive Select system offers four distinct modes-comfort, auto, dynamic, and individual-allowing drivers to customize transmission shift points, steering assistance, and suspension damping characteristics to suit their preferences.

Standard equipment includes auto-leveling xenon headlights with LED daytime running lights, LED taillights, 17-inch alloy wheels, power-adjustable heated exterior mirrors with integrated LED turn signals, heated windshield washer nozzles, three-zone automatic climate control, leather steering wheel, cruise control, leather seating surfaces, one-touch up/down power windows, rain-sensing wipers, aluminum interior inlays, power sunroof, and ambient LED lighting.

The infotainment system features Audi's MMI interface with a 10-inch color display, Bluetooth connectivity, two USB ports, two 12-volt power sockets, a 10-speaker audio system, and Apple CarPlay integration.

The A4 is offered in Premium, Premium Plus, and Prestige trim levels. The Premium Plus adds larger wheels and S line appearance elements including unique front and rear bumpers, body-color sills, and a rear diffuser. Interior enhancements include stainless steel door sill inlays and a 12.3-inch digital instrument cluster. Additional technology features comprise parking sensors, active lane control, and adaptive cruise control.

The top-tier Prestige trim builds upon the Premium Plus with a head-up display, adaptive cruise control, heated rear seats, Audi Pre Sense accident mitigation, and comprehensive LED exterior lighting.

The Audi A4 Allroad variant offers enhanced versatility with standard all-wheel drive, increased ground clearance, and expanded cargo capacity.

The wagon configuration provides nearly 60 cubic feet of cargo space compared to the sedan's 12 cubic feet, making it a practical alternative for active lifestyles and competing effectively with models like the Subaru Outback and Volvo V60 Cross Country.

The Audi S4 distinguishes itself with performance-focused styling elements, including sport bucket seats, 19-inch alloy wheels, lowered suspension, and distinctive "S" design accents throughout.

Standard safety features across all A4 models include antilock brakes with electronic brake-force distribution and brake assist, stability and traction controls, and a tire-pressure monitoring system. Additional safety technologies include lane departure warning, Audi Pre Sense for forward collision mitigation, and pedestrian detection prevention.