Mazda 6 MPG and Fuel Economy

Mazda have been manufacturing models of 6 for 19 years, with the latest vehicle in 2021 having a combined MPG of 29.

The estimated fuel cost for the 2021 Mazda 6 is $2,150 per year.

Government regulators have estimated that value based on 15,000 miles driven per year, using regular gasoline, and a split of 55% city driving and 45% highway driving.

💵 Compared to an average vehicle over 5 years, you will save $750 on fuel driving a 2021 Mazda 6.

🛢 The Mazda 6 will consume roughly 10 barrels of petroleum per year, using the standard estimate of 15,000 miles per year.

💨 For every mile driven, the Mazda 6 will emit 302 grams of CO2, which is about 4,530,000 grams of CO2 per year.

🌳 To help you understand the impact of this, a normal tree will absorb around 21,000 grams of CO2 per year. This means that roughly 216 trees would be needed to offset emissions from the Mazda 6.

The table below is a complete list of the 19 Mazda 6 fuel efficiency specifications we have data for.

Click any vehicle link to see a more detailed breakdown of the car, miles per gallon, emissions, and more.

VehicleCombined MPGFuel Cost
2021 Mazda 629$2,150
2020 Mazda 629$2,150
2019 Mazda 627$2,300
2018 Mazda 627$2,300
2017 Mazda 628$2,250
2016 Mazda 630$2,100
2015 Mazda 630$2,100
2014 Mazda 629$2,150
2013 Mazda 621$3,000
2012 Mazda 625$2,500
2011 Mazda 621$3,000
2010 Mazda 623$2,700
2009 Mazda 623$2,700
2008 Mazda 624$2,600
2007 Mazda 624$2,600
2006 Mazda 624$2,600
2005 Mazda 623$2,700
2004 Mazda 624$2,600
2003 Mazda 624$2,600

Link To or Reference This Page

If you use this page in your research, please reference MPG Buddy as the source.

  • "Mazda 6 MPG and Fuel Economy." MPG Buddy. Accessed on January 3, 2026. https://mpgbuddy.com/cars/mazda/6.

  • "Mazda 6 MPG and Fuel Economy." MPG Buddy, https://mpgbuddy.com/cars/mazda/6. Accessed January 3, 2026.

  • Mazda 6 MPG and Fuel Economy. MPG Buddy. Retrieved from https://mpgbuddy.com/cars/mazda/6.