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
Order-3-7 hexagonal honeycomb with infinitely many hexagonal tilings existing around each vertex in an infinite-order triangular tiling vertex arrangement. It has a second construction as a uniform honeycomb, Schläfli symbol {6,(3,∞,3)}, Coxeter diagram, , with alternating types or colors of hexagonal tiling cells. Order-3-7 hexagonal honeycomb In the geometry of hyperbolic 3-space, the order-3-7 hexagonal honeycomb or (6,3,7 honeycomb) a regular space-filling tessellation (or honeycomb) with Schläfli symbol {6,3,7}. All vertices are ultra-ideal (existing beyond the ideal boundary) with seven hexagonal tilings existing around each edge and with an order-7 triangular tiling vertex figure. It a part of a sequence of regular polychora