Today, Mazda USA revealed that they will be offering the 2021 Mazda3 2.5-liter 4-cylinder with glorious turbocharged assistance. Power figures are respectable: the Skyactiv-G 2.5-liter engine will produce 250 horsepower and 320 lb.-feet on 93 octane (less on 91, sorry California), which will be sent to the pavement via their i-Activ all-wheel drive system.