Based on data from 80 vehicles, 5,628 fuel-ups and 1,417,533 miles of driving, the 2021 Mazda 3 gets a combined Avg MPG of 28.57 with a 0.15 MPG margin of error.

Any Engine Type GAS (2) H4 DIESEL (1) H4 GAS (1) L4 ELECTRIC/GAS (2) L4 GAS (14) V4 GAS (1) V6 GAS (1) Any Body Style Sedan (6) Hatchback (20) Any Submodel Skyactiv-X (2) Base (32) Turbo AWD Hatchback (33) Other (13)

Below you can see a distribution of the fuel-ups with 76 outliers (1.33%) removed.

Following shows the average MPG of each of the 80 vehicles in the system.

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• 2021 Mazda3

  2021 Mazda 3 Automatic 6 Speed Sedan
  Added Jul 2021 • 214 Fuel-ups

  Property of Rjscls

• 35.3 Avg MPG

• Turbo

  2021 Mazda 3 Turbo AWD Hatchback
  Added Apr 2021 • 226 Fuel-ups

  Property of dk1219

• 29.4 Avg MPG

• Mazda 3

  2021 Mazda 3 Skyactive-G L4 GAS
  Added Sep 2024 • 36 Fuel-ups

  Property of wucinac

• 32.5 Avg MPG

• My 3 Turbo AWD

  2021 Mazda 3 Turbo PP
  Added Dec 2020 • 220 Fuel-ups

  Property of bradbanwarth

• 26.8 Avg MPG

• Taz

  2021 Mazda 3 Turbo AWD Hatchback L4 GAS Automatic 6 Speed Hatchback
  Added Nov 2022 • 135 Fuel-ups

  Property of Jlaubers

• 24.9 Avg MPG

• My Little Mazda

  2021 Mazda 3 Premium
  Added Jun 2024 • 19 Fuel-ups

  Property of HyperJMazda

• 33.3 Avg MPG

• My 3

  2021 Mazda 3
  Added Nov 2023 • 90 Fuel-ups

  Property of mrocc6

• 30.9 Avg MPG

• Mazda3 2.5 Turbo

  2021 Mazda 3 Turbo AWD Hatchback
  Added Dec 2020 • 263 Fuel-ups

  Property of polird

• 30.1 Avg MPG

• 2021 Mazda 3 AWD Turbo

  2021 Mazda 3 Turbo AWD Sedan L4 GAS
  Added Apr 2025 • 22 Fuel-ups

  Property of My_mpgs

• 29.4 Avg MPG

• Mazda

  2021 Mazda 3 Skyactiv-X L4 GAS Automatic 6 Speed
  Added Jan 2024 • 49 Fuel-ups

  Property of nicholas0000

• 30.9 Avg MPG

• My 3 new

  2021 Mazda 3
  Added Aug 2021 • 214 Fuel-ups

  Property of richc804

• 26.1 Avg MPG

• Skoot boot

  2021 Mazda 3 Turbo AWD Hatchback
  Added Aug 2021 • 164 Fuel-ups

  Property of Dschlon

• 29.9 Avg MPG

• Sharky

  2021 Mazda 3 Turbo AWD Hatchback
  Added Mar 2023 • 98 Fuel-ups

  Property of holdtheairin

• 29.1 Avg MPG

• My 3

  2021 Mazda 3 Turbo AWD Hatchback
  Added Jan 2024 • 34 Fuel-ups

  Property of hcoupe

• 28.4 Avg MPG

• Sando

  2021 Mazda 3 Turbo AWD Hatchback
  Added May 2021 • 148 Fuel-ups

  Property of pookieikoop

• 25.3 Avg MPG

• Mazda 3 Exceed

  2021 Mazda 3 L4 ELECTRIC/GAS Manual 6 Speed Hatchback
  Added Aug 2022 • 105 Fuel-ups

  Property of MarcoRss87

• 33.6 Avg MPG

• 2021 Mazda3

  2021 Mazda 3 Turbo AWD Hatchback
  Added May 2021 • 49 Fuel-ups

  Property of Bruecken

• 24.7 Avg MPG

• Mazda red

  2021 Mazda 3
  Added Aug 2021 • 138 Fuel-ups

  Property of sethd50

• 31.6 Avg MPG

• 2021 Mazda 3

  2021 Mazda 3 L4 GAS Automatic 6 Speed
  Added Feb 2021 • 145 Fuel-ups

  Property of journeej

• 30.1 Avg MPG

• Mazda3

  2021 Mazda 3 Hatchback GAS Manual 6 Speed
  Added Sep 2024 • 66 Fuel-ups

  Property of pklukeram

• 30.0 Avg MPG

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