In the turns, and how can I say this delicately, the new Mazda6 feels more plush but less agile than the car it replaces. Looking past the somewhat overboosted steering of a family sedan, the 6 is nonetheless entertaining on two-lane state highways. Several chassis upgrades, including a single-section, forged-steel lower-control arm in the front for added rigidity, have added to the new model's hardier road feel. Sport-compact aficionados will give a nod to a new set of twin-tube KYB dampers, placed further outboard and aligned upright for improved wheel control. Still, I'd have enjoyed a bit more aggressive tune to the running gear -- a relentless corner carver this isn't. A posterior preserver, possibly.