Based on data from 82 vehicles, 8,137 fuel-ups and 2,676,122 miles of driving, the 2018 Mazda 6 gets a combined Avg MPG of 29.00 with a 0.10 MPG margin of error.

Any Engine Type 2.5L L4 GAS (66) L4 DIESEL (1) L4 GAS (5) V4 GAS (1) Any Body Style Sedan (37) Wagon (5) Any Submodel I Sport (1) Grand Touring Reserve (1) Atenza Wagon (1) GS-L (2) Base (4) GT (4) V (4) Grand Touring (9) 1.5 RS CVT Honda SENSING (10) Touring (15) Signature (15) Grand Touring Reserve (15) Other (1)

Below you can see a distribution of the fuel-ups with 132 outliers (1.60%) removed.

Following shows the average MPG of each of the 82 vehicles in the system.

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• 2018 Mazda 6

  2018 Mazda 6 Touring 2.5L L4 GAS Automatic 6 Speed
  Added Aug 2018 • 112 Fuel-ups

  Property of mryk

• 31.2 Avg MPG

• Mazda 6

  2018 Mazda 6 Signature 2.5L L4 GAS Automatic 6 Speed Sedan
  Added May 2024 • 328 Fuel-ups

  Property of Demonsguile

• 28.5 Avg MPG

• My 6

  2018 Mazda 6 Grand Touring Reserve 2.5L L4 GAS Automatic 6 Speed
  Added Dec 2022 • 82 Fuel-ups

  Property of sschneider1

• 28.4 Avg MPG

• 2018 Mazda 6 GTR

  2018 Mazda 6 Grand Touring Reserve 2.5L L4 GAS Automatic 6 Speed
  Added Oct 2018 • 596 Fuel-ups

  Property of areseagle

• 30.7 Avg MPG

• Six

  2018 Mazda 6 Signature 2.5L L4 GAS Automatic 6 Speed Sedan
  Added Jan 2025 • 9 Fuel-ups

  Property of Hamlet

• 32.2 Avg MPG

• My Mazda6 GT-R

  2018 Mazda 6 Grand Touring Reserve 2.5L L4 GAS Automatic 6 Speed
  Added Apr 2019 • 165 Fuel-ups

  Property of kswan53

• 27.5 Avg MPG

• Betty

  2018 Mazda 6 1.5 RS CVT Honda SENSING 2.5L L4 GAS Manual 6 Speed
  Added Dec 2018 • 367 Fuel-ups

  Property of michre

• 29.0 Avg MPG

• My 6

  2018 Mazda 6 Touring
  Added Sep 2019 • 256 Fuel-ups

  Property of springtwig

• 31.7 Avg MPG

• Mazda6

  2018 Mazda 6 Grand Touring Reserve 2.5L L4 GAS Automatic 6 Speed
  Added Apr 2024 • 95 Fuel-ups

  Property of DevinQ

• 30.6 Avg MPG

• My 6

  2018 Mazda 6 Grand Touring Reserve 2.5L L4 GAS Automatic 6 Speed
  Added Apr 2019 • 302 Fuel-ups

  Property of bastmartin

• 30.7 Avg MPG

• Mazda 6

  2018 Mazda 6 Signature 2.5L L4 GAS Automatic 6 Speed Sedan
  Added Mar 2021 • 184 Fuel-ups

  Property of cpalenshus

• 29.8 Avg MPG

• Mazzie

  2018 Mazda 6 Sport D L4 DIESEL
  Added Jul 2024 • 36 Fuel-ups

  Property of Purkz

• 38.4 Avg MPG

• Mazda 6

  2018 Mazda 6 1.5 RS CVT Honda SENSING 2.5L L4 GAS Automatic 6 Speed
  Added Aug 2021 • 159 Fuel-ups

  Property of JamesBambridge

• 28.8 Avg MPG

• The 6

  2018 Mazda 6 Grand Touring Reserve 2.5L L4 GAS Automatic 6 Speed Sedan
  Added Dec 2018 • 268 Fuel-ups

  Property of ssffl

• 31.1 Avg MPG

• My 6

  2018 Mazda 6 Touring 2.5L L4 GAS Automatic 6 Speed
  Added Jun 2025 • 14 Fuel-ups

  Property of noahsarc

• 27.4 Avg MPG

• 6

  2018 Mazda 6 Grand Touring 2.5L L4 GAS Automatic 6 Speed
  Added Sep 2021 • 133 Fuel-ups

  Property of cb_112

• 28.6 Avg MPG

• Martha's

  2018 Mazda 6 Touring 2.5L L4 GAS Automatic 6 Speed Sedan
  Added Dec 2024 • 5 Fuel-ups

  Property of cmontenegro163

• 28.5 Avg MPG

• My 6

  2018 Mazda 6 Touring 2.5L L4 GAS Automatic 6 Speed
  Added Feb 2020 • 186 Fuel-ups

  Property of pypd

• 33.9 Avg MPG

• My 6

  2018 Mazda 6 Grand Touring Reserve 2.5L L4 GAS Automatic 6 Speed
  Added May 2018 • 325 Fuel-ups

  Property of crawfj

• 26.8 Avg MPG

• Mazda 6 - 2017

  2018 Mazda 6 V
  Added Apr 2018 • 286 Fuel-ups

  Property of Strat

• 32.8 Avg MPG

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