2021 Mazda 3 4-Door

Compact Sedan Regular
Mazda 3 4-Door 2021
31MPG Combined
6 Trims
← 2020 2021 2022 →
Updated February 27, 2026

The 2021 Mazda 3 4-Door Compact Sedan provides 27–31 combined MPG depending on trim. We’ve compiled EPA fuel economy data, NHTSA safety ratings, and recall history so you can make an informed decision.

2021 Mazda 3 4-Door Specifications

SpecValue
Combined MPG27–31 combined MPG depending on trim
City MPG28
Highway MPG36
Body StyleCompact Sedan
Fuel TypeRegular
DriveFWD
Available Trims6

Available Trims

TrimMPG (City/Hwy/Combined)EngineTransmission
4 cyl28/36/312.0L 4cylAutomatic (S6)
4 cyl26/35/302.5L 4cylAutomatic (S6)
4 cyl26/35/302.5L 4cylAutomatic (S6)
4 cyl25/33/282.5L 4cylAutomatic (S6)
4 cyl25/33/282.5L 4cylAutomatic (S6)
4 cyl23/32/272.5L 4cylAutomatic (S6)

Annual Fuel Cost

Based on EPA estimates, the 2021 Mazda 3 4-Door costs approximately $1,525 per year in fuel. This assumes 15,000 miles driven annually and current fuel prices.

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Other Model Years

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