Re-designed for 2006, the Kia Rio sedan is built on a new platform giving the new car a longer wheelbase and increased width for a roomier cabin. Power is also up with the use of the new 1.6-liter engine producing 110 horsepower and 107 lb.-ft. of torque. Either a five-speed manual or an optional automatic can be mated to the new engine. But safety is the big news for the 2006 Kia Rio, which comes standard with six airbags and is the only car in its class to offer full-length side curtain airbags.