Vehicles produce CO2 when they use fuel. The amount of CO2 produced is directly linked to how much fuel it consumes. Excess levels of CO2 can be harmful to humans and the environment.

The five-seat Kia Optima debuted for the 2001 model year and competed in the mid-size sedan class. Value-oriented pricing and an impressive new-car warranty helped broaden the Optima’s appeal ...

It fits Kia's tradition of packing more features and value into their vehicles at the same price as lesser-equipped rival models while actually forging a beautiful new design direction. Also, resale ...

The Optima is the only car in its class with standard full-length side curtain air bags, active headrests, and a tire pressure monitoring system, according to Kia, and the brand also has "America's ...