See also:

Emissions Testing
Testing of Readiness Codes Your vehicle uses “readiness codes,” as part of its onboard self diagnostic system. Some states refer to these codes during testing to see if your vehicle’s em ...

Wear Indicators
The groove where the wear indicator is located is 1/16 inch (1.6 mm) shallower than elsewhere on the tire. If the tread has worn so that the indicator is exposed, replace the tire. Worn out ti ...

Fuel Economy
Improving Fuel Economy Fuel economy depends on several conditions, including driving conditions, your driving habits, the condition of your vehicle, and loading. Depending on these and other condit ...