The 2007 Audi S4 belongs to the fourth-generation Audi A4 lineup and helps shape Audi's reputation for luxury performance sedans. This compact car comes with a 4.2-liter V8 engine that generates 340 horsepower, paired with either a 6-speed manual or an optional 6-speed automatic transmission. Available in both a Quattro all-wheel-drive sedan and a convertible body style, it offers versatility to consumers. Inside, the S4 features premium leather seats, dual-zone climate control, and a power sunroof. For tech, it boasts a helpful navigation system, an upgraded sound system, and Audi’s trademark Multi Media Interface. Safety features include ESP stability control, anti-lock brakes, and an array of airbags including front-seat-mounted side airbags along with occupancy sensors, providing additional safety.