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 ...

Going & Stopping
The new Mazda6 is available with one of two engines, and both offer capable performance for what they are. The base engine is a 2.5-liter four-cylinder that produces 170 horsepower (a cleaner vers ...

Specifications
Engine Electrical System *1 ex factory CAUTION: When cleaning the iridium plugs, do not use a wire brush. (2.5-liter engine) The fine particulate coating on the iridium alloy and platinum t ...