See also:

Emission Control System
Your vehicle is equipped with an emission control system (the catalytic converter is part of this system) that enables your vehicle to comply with existing exhaust emissions requirements. WARNING ...

Exterior
The outside of the Tribute didn't get as dramatic a face-lift as the Escape did for 2008. The grille lost its crossbar and the Mazda logo was moved up. * Standard 16-inch aluminum-alloy wheels * ...

Fuel Requirements
* U.S. federal law requires that octane ratings be posted on gasoline station pumps. Vehicles with catalytic converters or oxygen sensors must use ONLY UNLEADED FUEL, which will reduce exhaust ...