Based on data from 98 vehicles, 7,749 fuel-ups and 2,409,952 miles of driving, the 2018 BMW X3 gets a combined Avg MPG of 23.17 with a 0.12 MPG margin of error.

Any Engine Type 2.0L L4 GAS (44) 3.0L L6 GAS (40) H4 DIESEL (2) L4 DIESEL (4) L6 DIESEL (2) Any Body Style Wagon (2) Sport Utility (35) Any Submodel sDrive20i Executive (2) Base (7) xDrive30i X Line (15) xDrive30i (28) M40i (40) Other (6)

Below you can see a distribution of the fuel-ups with 398 outliers (4.89%) removed.

Following shows the average MPG of each of the 98 vehicles in the system.

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• Beeeemer X3

  2018 BMW X3 M40i 3.0L L6 GAS Automatic 8 Speed
  Added Sep 2022 • 56 Fuel-ups

  Property of cream92

• 22.2 Avg MPG

• My X3

  2018 BMW X3 xDrive30i X Line 2.0L L4 GAS Automatic 8 Speed
  Added Aug 2023 • 77 Fuel-ups

  Property of TrevK

• 25.9 Avg MPG

• 2018 BMW X3

  2018 BMW X3 xDrive30i 2.0L L4 GAS Automatic 8 Speed
  Added Jun 2022 • 111 Fuel-ups

  Property of markpwilson

• 25.9 Avg MPG

• My X3

  2018 BMW X3 M40i 3.0L L6 GAS Automatic 8 Speed
  Added Jul 2023 • 120 Fuel-ups

  Property of darora15

• 21.9 Avg MPG

• G01

  2018 BMW X3 M40i 3,0L L6 GAS Automatic 8 Speed Sport Utility
  Added May 2024 • 20 Fuel-ups

  Property of vytpau

• 19.6 Avg MPG

• My X3

  2018 BMW X3 M40i 3.0L L6 GAS Automatic 8 Speed
  Added Nov 2024 • 9 Fuel-ups

  Property of ckappe

• 25.3 Avg MPG

• X3 M40i

  2018 BMW X3 M40i 3.0L L6 GAS Automatic 8 Speed Sport Utility
  Added Jun 2018 • 121 Fuel-ups

  Property of DigiSage

• 22.8 Avg MPG

• Emmie the M40

  2018 BMW X3 M40i 3.0L L6 GAS Automatic 8 Speed
  Added Mar 2023 • 66 Fuel-ups

  Property of mizznfizz

• 21.0 Avg MPG

• BMW X3 20d M Sport

  2018 BMW X3 xDrive20d M Sport L4 DIESEL
  Added Jul 2018 • 172 Fuel-ups

  Property of Choti

• 30.3 Avg MPG

• 2018 X3 xDrive30i

  2018 BMW X3 xDrive30i X Line 2.0L L4 GAS Automatic 8 Speed Sport Utility
  Added Mar 2018 • 228 Fuel-ups

  Property of crono06

• 22.3 Avg MPG

• GUAGUA X3

  2018 BMW X3 xDrive30i 2.0L L4 GAS Automatic 8 Speed
  Added Jan 2024 • 27 Fuel-ups

  Property of gcapote

• 26.4 Avg MPG

• X3 xDrive30i

  2018 BMW X3 xDrive30i 2.0L L4 GAS Automatic 8 Speed
  Added Jan 2018 • 315 Fuel-ups

  Property of RichL

• 22.8 Avg MPG

• BMW X3 M40i

  2018 BMW X3 M40i 3.0L L6 GAS Automatic 8 Speed
  Added Jan 2019 • 312 Fuel-ups

  Property of yancr

• 19.5 Avg MPG

• 2018 BMW X3

  2018 BMW X3 xDrive30i 2.0L L4 GAS Automatic 8 Speed
  Added Mar 2021 • 97 Fuel-ups

  Property of beemer1

• 20.1 Avg MPG

• My X3

  2018 BMW X3 xDrive30i 2.0L L4 GAS Automatic 8 Speed
  Added Aug 2019 • 200 Fuel-ups

  Property of derkconnor

• 23.5 Avg MPG

• X3

  2018 BMW X3 xDrive30i 2.0L L4 GAS Automatic 8 Speed Sport Utility
  Added Mar 2018 • 252 Fuel-ups

  Property of bst07

• 22.5 Avg MPG

• Smokey X3

  2018 BMW X3 xDrive30i X Line 2.0L L4 GAS Automatic 8 Speed Sport Utility
  Added Aug 2018 • 102 Fuel-ups

  Property of jarb

• 23.6 Avg MPG

• My X3

  2018 BMW X3 xDrive30i 2.0L L4 GAS Automatic 8 Speed
  Added May 2022 • 70 Fuel-ups

  Property of rrkwiatkowski

• 19.6 Avg MPG

• My X3

  2018 BMW X3 M40i 3.0L L6 GAS Automatic 8 Speed
  Added Jul 2023 • 46 Fuel-ups

  Property of LilGator

• 20.4 Avg MPG

• BMW X3

  2018 BMW X3 20d H4 DIESEL
  Added Oct 2019 • 105 Fuel-ups

  Property of evansw

• 27.5 Avg MPG

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