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 ...

Interior overview
1. Door lock/unlock button 2. Power window switches 3. Outside rearview mirror control switch (if equipped) 4. Hood release lever 5. Instrument panel illumination (if equipped) 6. Electronic st ...

Rear differential (4WD)
Checking or changing rear differential fluid Have rear differential fluid checked or changed by an Authorized Kia Dealer according to the Maintenance Schedule at the beginning of this section. ...