Mazda 6 (2011)

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    Substantially reduced road and wind noise
    Many improvements were made to structural rigidity and powertrain NVH performance to provide a quieter, more pleasant ride, including the reduction of high frequency booming noise sometimes heard ...

    Tires
    For reasons of proper performance, safety, and better fuel economy, always maintain recommended tire inflation pressures and stay within the recommended load limits and weight distribution. WARNI ...

    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 ...