Mazda 3 5-Door MPG and Fuel Economy
Mazda have been manufacturing models of 3 5-Door for 5 years, with the latest vehicle in 2018 having a combined MPG of 31.
The estimated fuel cost for the 2018 Mazda 3 5-Door is $2,000 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 $1,500 on fuel driving a 2018 Mazda 3 5-Door.
🛢 The Mazda 3 5-Door 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 3 5-Door will emit 286 grams of CO2, which is about 4,290,000 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 205 trees would be needed to offset emissions from the Mazda 3 5-Door.
The table below is a complete list of the 5 Mazda 3 5-Door 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.
| Vehicle | Combined MPG | Fuel Cost |
|---|---|---|
| 2018 Mazda 3 5-Door | 31 | $2,000 |
| 2017 Mazda 3 5-Door | 31 | $2,000 |
| 2016 Mazda 3 5-Door | 32 | $1,950 |
| 2015 Mazda 3 5-Door | 32 | $1,950 |
| 2014 Mazda 3 5-Door | 32 | $1,950 |
Link To or Reference This Page
If you use this page in your research, please reference MPG Buddy as the source.
<a href="https://mpgbuddy.com/cars/mazda/3-5-door">Mazda 3 5-Door MPG and Fuel Economy</a>
"Mazda 3 5-Door MPG and Fuel Economy." MPG Buddy. Accessed on January 3, 2026. https://mpgbuddy.com/cars/mazda/3-5-door.
"Mazda 3 5-Door MPG and Fuel Economy." MPG Buddy, https://mpgbuddy.com/cars/mazda/3-5-door. Accessed January 3, 2026.
Mazda 3 5-Door MPG and Fuel Economy. MPG Buddy. Retrieved from https://mpgbuddy.com/cars/mazda/3-5-door.