The 2017 Audi S4 is a compact luxury sport sedan that blends everyday comfort with serious performance, making it ideal for drivers who want a practical four-door with strong acceleration and all-weather confidence. This model year marks the start of the B9-generation S4, a major redesign that introduced a new turbocharged V6 and updated technology. It competes directly with the BMW 340i xDrive and Mercedes-AMG C43, offering a refined interior and standard Quattro all-wheel drive. The result is a quick, upscale sedan that can be a commuter all week and a back-road car on the weekend.

- 3.0L turbocharged V6 (single turbo) with 354 hp and 369 lb-ft of torque, delivering strong midrange pull and quick passing power. - 8-speed Tiptronic automatic transmission paired with standard Quattro all-wheel drive (no manual transmission for 2017), tuned for fast launches and confident traction in poor weather. - Sport-focused chassis with available S sport package features such as sport rear differential for sharper cornering and improved power delivery out of turns. - High-end cabin with supportive sport seats, quality materials, and available Virtual Cockpit digital gauge cluster plus advanced driver assistance options. - Strong performance reputation for its class, with 0–60 mph typically in the mid-4-second range when equipped and driven in good conditions.

Shoppers searching “2017 Audi S4 reliability” should know the B9 S4 is generally solid for a high-performance German sedan, but it’s not maintenance-free. Like many turbocharged, tech-heavy luxury cars, it can develop a few repeat issues as mileage climbs. 1) Water pump/thermostat housing leaks: Coolant leaks can occur from plastic cooling system components on Audi/VW turbo engines. Owners may notice low coolant warnings, sweet coolant smells, or residue around the front of the engine. This can show up anywhere from around 30,000–70,000 miles depending on driving conditions and heat cycles. 2) PCV (positive crankcase ventilation) system problems and oil consumption symptoms: A failing PCV can contribute to rough idle, whistling noises, lean codes, or increased oil use. On turbo engines, crankcase ventilation health matters for long-term sealing and performance. Some owners report symptoms in the 40,000–80,000-mile range. 3) Carbon buildup on intake valves (direct injection-related): Because the 3.0T uses direct injection, intake valves don’t get fuel wash, which can allow deposits to build up over time. Common signs include reduced performance, cold-start misfires, or rough idle, often becoming more noticeable after 50,000–90,000 miles. Driving style and oil vapor control can influence severity. 4) Electronics and infotainment quirks: Some 2017 S4 owners report intermittent MMI/connection glitches, sensor warnings, or occasional camera/parking aid oddities. These are often software-related, but diagnosis can take time, and updates or component replacement may be needed.