Based on data from 74 vehicles, 4,560 fuel-ups and 1,142,010 miles of driving, the 2021 Mazda 3 gets a combined Avg MPG of 28.48 with a 0.17 MPG margin of error.

Any Engine Type GAS (1) H4 DIESEL (1) H4 GAS (1) L4 ELECTRIC/GAS (2) L4 GAS (12) V4 GAS (1) V6 GAS (1) Any Body Style Sedan (5) Hatchback (20) Any Submodel Base (31) Turbo AWD Hatchback (32) Other (11)

Below you can see a distribution of the fuel-ups with 60 outliers (1.30%) removed.

Following shows the average MPG of each of the 74 vehicles in the system.

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• 2021 Mazda3

  2021 Mazda 3 Turbo AWD Hatchback
  Added May 2021 • 38 Fuel-ups

  Property of Bruecken

• 24.9 Avg MPG

• Sando

  2021 Mazda 3 Turbo AWD Hatchback
  Added May 2021 • 109 Fuel-ups

  Property of pookieikoop

• 24.8 Avg MPG

• 2021 Mazda 3 2.5L Turbo AWD

  2021 Mazda 3 Turbo AWD Hatchback L4 GAS Automatic 6 Speed Hatchback
  Added Mar 2021 • 150 Fuel-ups

  Property of tommyz

• 26.0 Avg MPG

• My 3 Turbo AWD

  2021 Mazda 3 Turbo PP
  Added Dec 2020 • 174 Fuel-ups

  Property of bradbanwarth

• 27.1 Avg MPG

• Mazda 3 Hatchback

  2021 Mazda 3
  Added Nov 2021 • 85 Fuel-ups

  Property of davyd

• 26.7 Avg MPG

• My 3

  2021 Mazda 3 Turbo AWD Hatchback
  Added Nov 2023 • 61 Fuel-ups

  Property of zacharyf

• 25.7 Avg MPG

• Red Rider

  2021 Mazda 3 Automatic 6 Speed Hatchback
  Added Oct 2021 • 74 Fuel-ups

  Property of Red-Rider2

• 27.4 Avg MPG

• Mazda3 2.5T

  2021 Mazda 3 Turbo AWD Hatchback
  Added Feb 2024 • 6 Fuel-ups

  Property of Renns8

• 16.9 Avg MPG

• 2021 Mazda3

  2021 Mazda 3 Automatic 6 Speed Sedan
  Added Jul 2021 • 161 Fuel-ups

  Property of Rjscls

• 35.5 Avg MPG

• 2021 Mazda Mazda3

  2021 Mazda 3 Premium
  Added Dec 2020 • 84 Fuel-ups

  Property of mvv91941

• 26.5 Avg MPG

• My 3

  2021 Mazda 3
  Added Jun 2023 • 51 Fuel-ups

  Property of Marbles_Garage

• 31.7 Avg MPG

• 2021 Mazda 3

  2021 Mazda 3 L4 GAS Automatic 6 Speed
  Added Feb 2021 • 112 Fuel-ups

  Property of journeej

• 29.8 Avg MPG

• Jessica 2021 Mazda 3

  2021 Mazda 3
  Added May 2021 • 136 Fuel-ups

  Property of moyerd

• 34.6 Avg MPG

• Turbo

  2021 Mazda 3 Turbo AWD Hatchback
  Added Apr 2021 • 176 Fuel-ups

  Property of dk1219

• 29.3 Avg MPG

• O-M Three

  2021 Mazda 3 Turbo AWD Hatchback L4 GAS Automatic 6 Speed Hatchback
  Added Nov 2023 • 23 Fuel-ups

  Property of r56turbo

• 26.3 Avg MPG

• My 3 new

  2021 Mazda 3
  Added Aug 2021 • 168 Fuel-ups

  Property of richc804

• 25.6 Avg MPG

• Mazda3 2.5 Turbo

  2021 Mazda 3 Turbo AWD Hatchback
  Added Dec 2020 • 206 Fuel-ups

  Property of polird

• 30.2 Avg MPG

• My Mazda3 Turbo

  2021 Mazda 3 AWD Turbo Sedan PP
  Added Dec 2020 • 116 Fuel-ups

  Property of Juker72

• 29.7 Avg MPG

• Mazda3

  2021 Mazda 3
  Added Apr 2021 • 153 Fuel-ups

  Property of Ashasemo

• 27.4 Avg MPG

• Mazda 3 Exceed

  2021 Mazda 3 L4 ELECTRIC/GAS Manual 6 Speed Hatchback
  Added Aug 2022 • 77 Fuel-ups

  Property of MarcoRss87

• 33.7 Avg MPG

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