BMW's 3 Series continues to be the benchmark for sports sedans. It's been that way since the late 1970s. This all-wheel-drive system uses a planetary center differential to split drive torque 38/62 percent front/rear, preserving the rear-wheel-drive feel that BMW enthusiasts demand. All-Season Traction Control (AST) and a specially calibrated version of BMW's Dynamic Stability Control (DSC-X) enhance foul-weather safety. If driving satisfaction is top priority, then this 3 Series should top your shopping list. Clean Carfax and priced to sell.