Just Traded! This Impala is a beauty and has suspension that has been retuned, and track width (the distance between wheels) is greater. Inside, innovative flip-and-fold rear seat cushions reveal a covered storage area and include grocery bag hooks. The rear seatback folds down to create a pass-thru into the trunk. Interiors also display improved seat-upholstery stitching, low-gloss instrument-panel components and jewellike dashboard details., , Impalas ride on a new group of wheels. Side curtain-type airbags are standard. Most models benefit from enhanced antilock brakes and traction control., , A new family of V-6 engines features cam phasing for improved performance and economy. Base models use a new 3.5-liter V-6 that develops 210 horsepower. This system promises fuel-economy improvements of up to 12 percent, according to Chevrolet., Impalas compete against the Ford Five Hundred, Honda Accord and Toyota Camry. The Impala nameplate dates back to 1958, when it was the top-end member of Chevrolet's full-size car lineup.