See also:

Emission control information label
The emission control information label is attached to the underside of the hood as shown. ...

Exterior
A new dark gray body color is available; it's called Night Armor. The Frontier is only available in King Cab (extended cab) and crew cab body styles with either a 4x2 or 4x4 drivetrain. Tough PR ...

Readiness for inspection/maintenance (I/M) test
Due to legal requirements in some states and Canadian Provinces, your vehicle may be required to be in what is called the “ready condition” for an Inspection/Maintenance (I/M) test of the ...