See also:

Suggestions for economical operation
Your vehicle's fuel economy depends mainly on your style of driving, where you drive and when you drive. Each of these factors affects how many kilometers (miles) you can get from a liter (gallon ...

Explanation of scheduled maintenance items
Engine oil and filter The engine oil and filter should be changed at the intervals specified in the maintenance schedule. If the car is being driven in severe conditions, more frequent oil and fi ...

By the numbers
The Kia Optima is a five-seat mid-size segment passenger car that has an interior that the EPA will probably consider a full size interior. Longer, lower and wider than the vehicle it replaces, it ...