See also:

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 ...

Design
At launch in 2007, Mazda's sports crossover SUV featured an advanced design that gave it an emotional appeal usually reserved for sports cars. Taking this as their basis, designers of the facelift ...

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 ...