See also:

Uniform Tire Quality Grading System (UTQGS)
This information relates to the tire grading system developed by the U.S. National Highway Traffic Safety Administration for grading tires by tread wear, traction, and temperature performance. ...

Under the Hood
The 2.0-liter four-cylinder in the Mazda3 i has variable valve timing and develops 148 horsepower (144 hp in PZEV form). The Mazda3 s uses a 2.3-liter four-cylinder that pumps out 156 hp. A five-s ...

Under the Hood
The 2.3-liter four-cylinder develops 156 hp while the 3.0-liter V-6 turns out 212 hp. Both engines can team with a five-speed manual transmission. A five-speed automatic is available in models equ ...