The 2007 Chevrolet Impala SS has a 5.3-liter V8 making an impressive 303 hp engine. All Impala models employ a four-speed automatic transmission that sends the power through the front wheels.

The 2007 Impala SS is a big car. It's generally classified as a mid-size sedan, though it's large for that class, and nearly a full-size. The front and back seats are roomy, though not inordinately so given the size of this car, and getting in and out of the car is easy and it has a healthy cargo capacity. It has a huge trunk and flip-and-fold back seats that present holding wells for groceries or a flat cargo floor that expands the trunk for long items. The SS comes with monochromatic exterior paint, a performance-tuned suspension, 18-inch wheels and a rear spoiler. The SS is equipped with a handful of features, including heated seats, a power front-passenger seat, Home link transmitter and an auto-dimming rear-view mirror.

The 2007 Chevrolet Impala SS Sedan employs a responsive four-speed automatic transmission (heavy-duty on the SS) that sends the power through the front wheels. The V6 engines offer an agreeable blend of power and fuel-efficiency (up to 31 mpg on the freeway with the 3.5 E85), while the V8 offers serious off-the-line thrust. An Impala SS which was tested did the 0-60-mph drill in just 6.4 seconds and ran through the quarter-mile in 14.5 seconds, which gives the proof of its spectacular acceleration.

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