Saab 9-3 some revisions in 2011 for the 2012 model year. Changes were in the engine range with an overall reduction in diesel and petrol engine fuel consumption of 12% and 7% respectively. An entry-level 163 hp, 2.0-litre gasoline / BioPower engine was added for 9-3 saloon, estate, and 9-3X models with Saab XWD. Other changes included rear badging in line with all new Saab 9-5 saloon, 'ice block' style headlights, New bumper design, titanium metallic effect trim around instrument panel, gearshift, doors and glove box. Aero gets graphite fiber effect. Contrast stitching on leather upholstery. In most markets, car was badged
5-4-3 rule 5-4-3 rule The 5-4-3 rule also referred to as the IEEE way (contrary to the Ethernet way) is a design guideline for Ethernet computer networks covering the number of repeaters and segments on shared-access Ethernet backbones in a tree topology. It means that in a collision domain there should be at most 5 segments tied together with 4 repeaters, with up to 3 mixing segments (10BASE5, 10BASE2, or 10BASE-FP). Link segments can be 10BASE-T, 10BASE-FL or 10BASE-FB – for prompt collision detection, a full-duplex medium (not transmission) is required. This rule is also designated the 5-4-3-2-1 rule with there being