Koenigsegg may not be an owner as experienced as GM but it has taken the right decision of hurrying the announcement of the 2010 Saab 9-5. It may not be hurried in the context that an upgrade took a decade but even then, it is good to know that the upgrade has finally arrived. The influences of GM are still evident but that in no manner harms the car. The 2010 Saab 9-5 comes with a number of engine choices which include a 1.6-liter gas turbo variant capable of producing 180hp, a 2.8L V6 turbo that churns 300 horses and a 2.0L 4 Cylinder turbo capable of producing 220hp. For the green freaks, there is an E85 based 2.0L engine and a 2.0L turbo diesel choice. All these engine variants will be mated to a six-speed gear transmission. [via Jalopnik]