See also:

2011 Kia Optima Review
The previous generation Kia Optima was a vehicle struggling to keep up with the times, having emerged on the scene as a lackluster model masquerading as a value proposition, when in reality it was ...

Brake system
Power brakes Your vehicle has power-assisted brakes that adjust automatically through normal usage. In the event that the power-assisted brakes lose power because of a stalled engine or some oth ...

Engine coolant
The high-pressure cooling system has a reservoir filled with year round antifreeze coolant. The reservoir is filled at the factory. Check the antifreeze protection and coolant level at least once ...