See also:

First impressions mean a lot
At first glance, the Optima gives off more than a hint of a European vibe. A vast stylistic improvement over the namesake that it replaces, it sports larger dimensions than the outgoing model. Sur ...

Overheating
If your temperature gauge indicates overheating, if you experience a loss of power, or if you hear a loud knocking or pinging noise, the engine has probably overheated. Should any of these sympto ...

Acceleration and Power
All Rio and Rio5 models have a 1.6-liter four-cylinder engine that makes 110 horsepower. A five-speed manual transmission is standard on the Rio sedan, and a four-speed automatic is available for ...