Question: are mazda 3 fuel efficient?
Answer: Mazda3 MPG & CO2 With CO2 emissions of just under 120g/km, it's an affordable choice for company-car drivers. The SkyActiv-X engine is even more frugal and efficient, returning up to 51.4mpg and emitting as little as 100g/km of CO2 with 16-inch alloy wheels fitted, giving it the lowest BiK liability in the range.