Based on data from 58 vehicles, 4,637 fuel-ups and 1,235,790 miles of driving, the 2020 Mazda 3 gets a combined Avg MPG of 29.82 with a 0.20 MPG margin of error.

Any Engine Type 2.0L L4 GAS (4) 2.5L L4 GAS (43) L4 GAS (3) V4 GAS (1) Any Body Style Sedan (8) Hatchback (16) Any Submodel I Sport (1) GT (2) GX (2) Select (2) i Grand Touring (2) GS (3) Preferred (7) Base (10) Premium (22) Other (7)

Below you can see a distribution of the fuel-ups with 142 outliers (2.97%) removed.

Following shows the average MPG of each of the 58 vehicles in the system.

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• Mazda3 Hatch

  2020 Mazda 3 Premium 2.5L L4 GAS Automatic 6 Speed
  Added Aug 2020 • 282 Fuel-ups

  Property of blueman00

• 34.5 Avg MPG

• My 3

  2020 Mazda 3 Premium 2.5L L4 GAS Automatic 6 Speed
  Added Aug 2024 • 103 Fuel-ups

  Property of stevenwilliam94

• 31.6 Avg MPG

• My 3

  2020 Mazda 3 Preferred 2.5L L4 GAS Automatic 6 Speed
  Added Jan 2021 • 47 Fuel-ups

  Property of aroon

• 23.4 Avg MPG

• 2020 Mazda 3 Premium MT

  2020 Mazda 3 Premium 2.5L L4 GAS Manual 6 Speed Hatchback
  Added Dec 2019 • 558 Fuel-ups

  Property of morph

• 34.1 Avg MPG

• Mazda 3

  2020 Mazda 3 Evolution
  Added Apr 2023 • 220 Fuel-ups

  Property of Garnau

• 38.6 Avg MPG

• My 3

  2020 Mazda 3 2.5L L4 GAS Automatic 6 Speed
  Added Jan 2025 • 4 Fuel-ups

  Property of alex627

• 32.8 Avg MPG

• My Mazda3

  2020 Mazda 3 Premium 2.5L L4 GAS Manual 6 Speed
  Added Apr 2020 • 259 Fuel-ups

  Property of mobestar15

• 29.6 Avg MPG

• Mazda

  2020 Mazda 3 Preferred 2.5L L4 GAS Automatic 6 Speed Hatchback
  Added Jun 2023 • 81 Fuel-ups

  Property of mschex05

• 31.8 Avg MPG

• 2020 Mazda 3 Hatchback

  2020 Mazda 3 Premium
  Added Mar 2020 • 151 Fuel-ups

  Property of UncleDunkel

• 29.3 Avg MPG

• 隼子 二

  2020 Mazda 3 Premium 2.5L L4 GAS Automatic 6 Speed Hatchback
  Added Feb 2020 • 57 Fuel-ups

  Property of BobDawg

• 30.8 Avg MPG

• MAZDA 3

  2020 Mazda 3 Premium
  Added Jan 2020 • 86 Fuel-ups

  Property of warp

• 20.2 Avg MPG

• Elsa

  2020 Mazda 3 GT 2.5L L4 GAS Automatic 6 Speed
  Added Oct 2022 • 104 Fuel-ups

  Property of joeyc827

• 28.4 Avg MPG

• My 3

  2020 Mazda 3 Premium 2.5L L4 GAS Automatic 6 Speed
  Added Sep 2023 • 42 Fuel-ups

  Property of saltie95

• 29.6 Avg MPG

• Mazda 3

  2020 Mazda 3 G150 Plus L4 GAS
  Added Dec 2020 • 92 Fuel-ups

  Property of boroxman

• 30.1 Avg MPG

• 2020 Mazda 3

  2020 Mazda 3 i Grand Touring 2.5L L4 GAS Automatic 6 Speed
  Added Dec 2023 • 91 Fuel-ups

  Property of LuxeLifeFleet

• 34.3 Avg MPG

• 2020 Mazda 3 Premium 6MT HB

  2020 Mazda 3 Premium 2.5L L4 GAS Manual 6 Speed Hatchback
  Added Jul 2020 • 170 Fuel-ups

  Property of mosca

• 37.0 Avg MPG

• Mazda 3

  2020 Mazda 3 GX 2,0L L4 GAS Manual 6 Speed Hatchback
  Added Dec 2024 • 78 Fuel-ups

  Property of stephenbrcic

• 32.2 Avg MPG

• Burton

  2020 Mazda 3 Select 2.5L L4 GAS Automatic 6 Speed
  Added Aug 2023 • 36 Fuel-ups

  Property of Owensells

• 26.9 Avg MPG

• Mazda 3 BP

  2020 Mazda 3 High Plus V4 GAS
  Added Jan 2025 • 134 Fuel-ups

  Property of nekot

• 19.8 Avg MPG

• Mazda 3

  2020 Mazda 3 GS 2.5L L4 GAS Automatic 6 Speed
  Added Mar 2023 • 118 Fuel-ups

  Property of adityamatlani

• 31.4 Avg MPG

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