How’s the fuel economy? We tested the 6 with its optional turbocharged engine. When the 6 is so equipped, the EPA says to expect 26 mpg in combined city/highway driving. Used Mazda 6 2017 Energy and Environment Safety Specs Fuel Economy of the 2017 Mazda 6. Compare the gas mileage and greenhouse gas emissions of the 2017 Mazda 6 side-by-side with other cars and trucks We can help you calculate and track your fuel economy. 2017 Ratings Changes; 2013 Mazda 6. EPA MPG Fuel Economy (MPG): 27 MPG city, 35 MPG hwy. 30 MPG Combined I found the Mazda 6 GT with i-ELOOP is one loud engine on start-up..until it idles down. The 2017 Buick Regal for $16K is 6 Carbon Edition. $215/mo. Avg. Midsize Car. $209/mo. Monthly fuel estimates based on costs in Washington: $4.57 /gallon. Fuel Economy of the 2017 Mazda 6. Compare the gas mileage and greenhouse gas emissions of the 2017 Mazda 6 side-by-side with other cars and trucks 32.7. See details. See all data. With the 162-horsepower 2.0L I4 engine, 6-speed manual transmission, and front-wheel drive, the 2021 Mazda CX-5 has been averaging 32.7 MPG (miles per gallon). The 2021 Mazda CX-5s in this analysis were driven mostly on the highway at an average speed of 110 miles per hour (about 70 percent of the miles driven). Mazda3 MPG & CO2. Just about all versions of the Mazda3 are pretty cheap to run. The entry-level 2.0-litre petrol should return around 55mpg. The more powerful 163bhp 2.0-litre petrol engine will YuWRj20.