One of the top ten best-selling vehicles in the U.S., the Chevrolet Impala has traveled a long road, yet always maintained its distinction as a roomy, full-size family sedan. It may not have the looks or style or responsive handling of some of its competitors, but riding on its name and interior passenger space, it continues to draw in loyal fans. The 2009 Impala resists any structural or stylistic changes, but does get a few additional features.

The 2009 Impala's primary appeal rests in its six-passenger seating capacity. It seats five in the standard front bucket/rear bench setup, but a front bench can be added. Rear seats also split-fold, except in the base LS version, to add extra cargo room. Despite this capacity, long-legged adults may feel cramped on anything but short trips, and the Impala retains its budget-looking hard plastic surfaces. Its 19-cubic-foot trunk represents a significant jump from the 12 and 15 cubic feet in the Accord and Camry.

The second highlight can be found in the greenness of the 2009 Impala's powertrains. Both the standard 211-hp, 3.5-liter V6 and the 224-hp, 3.9-liter V6 in the luxury LTZ trim are flex-fuel E85 engines, and the larger engine features Active Fuel Management, which deactivates up to three cylinders to improve fuel economy. The Impala needs this, too, as the EPA rates it at only 18/29 mpg. The smaller V6 is available in the LS and both LT trims, while the larger V6 is offered on the LTZ. The SS trim features a 303-hp, 5.3-liter V8, also available with Active Fuel Management. With nods to the performance past of the Impala, the SS comes with a sport-tuned suspension, polished alloy wheels, a pleasing V8 rumble, and 0-60 times of a respectable 6.4 seconds.

For 2009, ABS brakes, traction and stability control, and side impact curtain airbags become standard for all trims (they were previously offered only on the LTZ and SS). Dual front-side airbags, OnStar, and a tire monitor contribute to the 2009 Impala's strong safety record. Also new for 2009 are larger 18-inch wheels for the SS, along with a revised rear spoiler (optional on other trims). The Impala joins the cellphone generation by adding Bluetooth, and dual-zone climate control is standard across the lineup. Cupholders get a redesign to better accommodate larger items.

The 2009 Impala won't turn heads or win design awards, but its consistency in handling, easy driveability, decent acceleration power, and spacious interior make it a safe bet for conservative buyers. It may not have the cachet of a Camry or Accord, but it knows what families need: reliability and plenty of space.