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Audi S4 B9

2016 – 2024

The Audi S4 is the high-performance version of Audi's compact executive car, the A4. The S4 has been in production since 1991, with the original model based on the Audi 100 saloon/sedan. From 1997 onwards, all S4 models have been based on the Audi A4. The S4 evolves alongside the A4 through different generations. Key Points: 1. Performance Variant: The Audi S4 is designed to offer high performance compared to the standard A4 model, with enhancements in power and driving dynamics. 2. Longitudinally Oriented Engine: All S4 variants feature longitudinally oriented, front-mounted engines that deliver power to all four wheels through Audi's quattro all-wheel-drive system. 3. Transmission Configuration: The transmission in the S4 is mounted at the rear of the engine in a longitudinal orientation, utilizing a transaxle setup to optimize weight distribution and handling characteristics. 4. Quattro All-Wheel Drive: Like other Audi "S" models, the S4 comes exclusively with Audi's quattro all-wheel-drive system, providing enhanced grip, traction, and stability in various driving conditions. 5. Torsen-Based Centre Differential: The S4 uses a Torsen-based centre differential system in the quattro AWD setup, which dynamically distributes power between the front and rear axles for improved performance. Overall, the Audi S4 offers a combination of power, handling, and traction through its performance-oriented design,