Kia Optima: Vehicle identification number (VIN)
Kia Optima: Vehicle identification number (VIN)
Frame number
The vehicle identification number (VIN) is the number used in registering your car and in all legal matters pertaining to its ownership, etc.
The number is punched on the engine compartment bulkhead.
VIN label
The VIN is also on a plate attached to the top of the dashboard. The number on the plate can easily be seen through the windshield from outside.