It's the 60th birthday for the Chevrolet Impala (never mind that it went missing for a few years). 1958 was a great year, the year Impala was born, a classic out of the box. Try to buy a '58 Chevy Impala today, especially a convertible. You'd be looking at $50k to $125k, last time we checked.The 2018 Impala is still a full-size sedan, although today it's front-wheel drive. Rivals include the Toyota Avalon, Hyundai Azera, and Ford Taurus. It's comfortable, thrifty and engaging. It shares its platform with the Buick Lacrosse and Cadillac XTS. It's eight inches shorter than the '58 Impala, on a wheelbase that's 6.5 inches less. Cutting out eight inches in sixty years doesn't sound like a whole lot. And back then they had to make room for a V8.This is the fourth year since the last redesign, which was a good one, for both the body and chassis.There aren't any changes for the 2018, however the standard equipment gets increased on all models, and there are new colors to choose from. Even the base model gets a rearview camera and 8.0-inch touchscreen for infotainment, with Apple CarPlay and Android Auto compatibility. You won't find that in many cars at the Impala's price.The base engine is a 2.5-liter four cylinder making 196 horsepower, with an available 3.6-liter V6 with 305 horsepower. Each engine is mated to a 6-speed automatic transmission. Fuel mileage is respectable but not the best in class; the four-cylinder engine is EPA-rated at 25 miles per gallon Combined, while the V6 gets 22 mpg Combined.Impala gets five stars for its crash rating from the National Highway Traffic Safety Administration, while Insurance Institute for Highway Safety gives it top scores in frontal- and side-impact collisions.