Saab 9-3 the standard offering, and a "HOT" (B204R, 200 hp) variant in the SE models for the 1999 model year. The 2000 model year saw a revision from SAAB's Trionic T5.5 to Trionic 7 engine management system. The T7 based engines were the B205L with and the B205R HOT engine with . The first generation 9-3 was also the first Saab available with a diesel engine, a unit also found in the Opel Vectra, Astra G, Signum, Zafira A. Unlike the Saab 900 (NG), the 9-3 is fitted with a CAN bus like the Saab 9-5. A Saab innovation is the
3–3–5 defense they are a relatively fast but smaller unit compared to the opposing offense, and they want to cause blocking assignment issues for that offense. Also, a 3-3-5 can be adjusted to a 4-3, 3-4, or 4-4 defense with the same starting players. To effectively play the 3-3-5, the "Front 8" (e.g. the eight defensive players closest to the line of scrimmage) must be physical and tough. The three down lineman must be able to control the running lanes, execute an effective pass rush, and be able to keep the opposing offensive line occupied so that the linebackers can make plays.