Saab 9-5 to the base models and the Aero. Six-speed manual transmission was not offered in first-generation 9-5s. In 2005, an updated version of the 2.0 L turbocharged I4 was introduced in the European market together with the 2006 9-5. The engine was sold as "2.0T BioPower", optimized to run on E85 producing 132 kW (180 hp) at 5500 rpm. There was also a 2.3T BioPower version sold from 2007. It was also introduced in Australia. There is a Saab 9-5 E100 Concept, based on the turbo 2.0. The 9-5 introduced Saab's Active Head Restraints (SAHR), which moved up and forward to
Order-7-3 triangular honeycomb vertex figures: {"p",7,3}. In the geometry of hyperbolic 3-space, the order-7-4 triangular honeycomb (or 3,7,4 honeycomb) is a regular space-filling tessellation (or honeycomb) with Schläfli symbol {3,7,4}. It has four order-7 triangular tilings, {3,7}, around each edge. All vertices are ultra-ideal (existing beyond the ideal boundary) with infinitely many order-7 triangular tilings existing around each vertex in an order-4 hexagonal tiling vertex arrangement. It has a second construction as a uniform honeycomb, Schläfli symbol {3,7}, Coxeter diagram, , with alternating types or colors of order-7 triangular tiling cells. In Coxeter notation the half symmetry is [3,7,4,1] = [3,7]. In the