Based on data from 530 vehicles, 55,987 fuel-ups and 15,906,326 miles of driving, the 2015 Mazda 3 gets a combined Avg MPG of 31.06 with a 0.05 MPG margin of error.

Any Engine Type 2.0L L4 GAS (341) 2.5L L4 GAS (119) GAS (1) L4 DIESEL (6) L4 GAS (16) Any Body Style Sedan (101) Hatchback (134) Any Submodel Touring+ (4) MAXX (6) S (8) 1.5 RS CVT Honda SENSING (9) i SV (11) i (16) GX (19) GT (25) s Touring (26) Base (29) I Sport (39) s Grand Touring (46) GS (47) i Grand Touring (65) I Touring (123) Other (57)

Below you can see a distribution of the fuel-ups with 1240 outliers (2.17%) removed.

Following shows the average MPG of each of the 530 vehicles in the system.

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• Mazda 3

  2015 Mazda 3 GS 2.0L L4 GAS Standard 6 Speed
  Added Mar 2017 • 544 Fuel-ups

  Property of coach5711

• 33.6 Avg MPG

• Mazda

  2015 Mazda 3 I Touring 2.0L L4 GAS Manual 6 Speed Hatchback
  Added May 2025 • 3 Fuel-ups

  Property of throttlejunkie

• 38.0 Avg MPG

• Mazda

  2015 Mazda 3 1.5 RS CVT Honda SENSING
  Added Mar 2017 • 405 Fuel-ups

  Property of SamRD

• 30.7 Avg MPG

• Mazda 3 2015

  2015 Mazda 3 MAXX L4 GAS Manual 6 Speed Hatchback
  Added Mar 2020 • 172 Fuel-ups

  Property of domenicof1

• 30.3 Avg MPG

• Clover

  2015 Mazda 3 s Grand Touring 2.5L L4 GAS Manual 6 Speed Hatchback
  Added May 2016 • 262 Fuel-ups

  Property of PtGrill

• 28.1 Avg MPG

• White Mazda 3

  2015 Mazda 3 I Touring 2.0L L4 GAS Automatic 6 Hatchback (4 Door)
  Added Aug 2015 • 552 Fuel-ups

  Property of RChang42

• 35.5 Avg MPG

• My 3

  2015 Mazda 3 I Touring 2.0L L4 GAS Automatic 6 Speed
  Added Feb 2024 • 41 Fuel-ups

  Property of irene_lee_01

• 21.1 Avg MPG

• Mazda

  2015 Mazda 3 I Sport 2.0L L4 GAS Automatic 6 Speed
  Added Nov 2023 • 92 Fuel-ups

  Property of Shadoww74

• 28.0 Avg MPG

• My 3

  2015 Mazda 3 i 2.0L L4 GAS Manual 6 Speed
  Added Mar 2025 • 392 Fuel-ups

  Property of DH52

• 30.3 Avg MPG

• 2015 Mazda3 Sport GT

  2015 Mazda 3 GT 2.5L L4 GAS Automatic 6 Speed Hatchback
  Added Sep 2015 • 380 Fuel-ups

  Property of Medic33

• 36.1 Avg MPG

• Mazda3

  2015 Mazda 3 i Grand Touring 2.0L L4 GAS Manual 6 Speed
  Added Aug 2019 • 188 Fuel-ups

  Property of zustermel

• 34.9 Avg MPG

• Mazda 3 GS

  2015 Mazda 3 GS 2.0L L4 GAS Automatic 6 Speed
  Added Nov 2024 • 23 Fuel-ups

  Property of _Brick

• 27.9 Avg MPG

• Mazda

  2015 Mazda 3 i Grand Touring 2.0L L4 GAS Automatic 6 Speed
  Added Jun 2019 • 164 Fuel-ups

  Property of zoom2zoom

• 32.1 Avg MPG

• 2015 Mazda 3

  2015 Mazda 3 i Grand Touring 2.0L L4 GAS Manual 6 Speed
  Added Jan 2025 • 12 Fuel-ups

  Property of dlgold09

• 32.3 Avg MPG

• My Mazda 3

  2015 Mazda 3 GS 2.0L L4 GAS Automatic 6 Speed
  Added Feb 2025 • 17 Fuel-ups

  Property of Sihong

• 30.2 Avg MPG

• 2015 Mazda 3

  2015 Mazda 3 I Touring 2.0L L4 GAS Automatic 6 Speed Hatchback
  Added Mar 2023 • 1022 Fuel-ups

  Property of spamme

• 25.8 Avg MPG

• 3

  2015 Mazda 3 i SV 2.0L L4 GAS Manual 6 Speed Sedan
  Added Jul 2024 • 32 Fuel-ups

  Property of Mortado

• 32.5 Avg MPG

• My 3

  2015 Mazda 3 GS 2.0L L4 GAS Manual 6 Speed
  Added Jun 2024 • 38 Fuel-ups

  Property of engggirl

• 31.9 Avg MPG

• My 3

  2015 Mazda 3 s Touring 2.5L L4 GAS Automatic 6 Speed
  Added Nov 2024 • 41 Fuel-ups

  Property of bolognabruh

• 33.1 Avg MPG

• Jake's Mazda3

  2015 Mazda 3 i Grand Touring 2.0L L4 GAS Automatic 6 Speed
  Added Jul 2020 • 226 Fuel-ups

  Property of Chazen

• 26.9 Avg MPG

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