The Saab 9-3, Saab’s near-luxury car, has no powertrain changes for what will probably be its final year. 2.0T models have a turbocharged 2.0-liter inline four. Known as the LK9, this 16-valve, DOHC engine is part of GM’s Ecotec family. It is all aluminum, with cast-iron cylinder liners and twin balance shafts for greater smoothness. […] ↓ Read the rest of this entry…