Based on data from 252 vehicles, 25,011 fuel-ups and 6,701,883 miles of driving, the 2015 Toyota Sienna gets a combined Avg MPG of 19.42 with a 0.04 MPG margin of error.

Any Engine Type 3.5L V6 GAS (250) Any Body Style Mini Passenger Van (85) Any Submodel L (5) Base (7) SE (29) Limited (33) LE (69) XLE (107) Other (2)

Below you can see a distribution of the fuel-ups with 966 outliers (3.72%) removed.

Following shows the average MPG of each of the 252 vehicles in the system.

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• Sienna

  2015 Toyota Sienna SE 3.5L V6 GAS Automatic 6 Speed Mini Passenger Van
  Added Mar 2021 • 90 Fuel-ups

  Property of mauirixxx

• 16.2 Avg MPG

• Sienna 2015

  2015 Toyota Sienna XLE 3.5L V6 GAS
  Added Sep 2017 • 273 Fuel-ups

  Property of linro

• 21.2 Avg MPG

• 2015 Sienna XLE

  2015 Toyota Sienna XLE 3.5L V6 GAS Automatic 6 Speed
  Added Aug 2018 • 80 Fuel-ups

  Property of myerscl

• 20.4 Avg MPG

• My Sienna

  2015 Toyota Sienna XLE 3.5L V6 GAS Automatic 6 Speed
  Added Jun 2019 • 84 Fuel-ups

  Property of jplfuelg

• 20.2 Avg MPG

• 2015 Sienna

  2015 Toyota Sienna XLE 3.5L V6 GAS Automatic 6 Speed Mini Passenger Van
  Added Apr 2018 • 253 Fuel-ups

  Property of tblue

• 22.6 Avg MPG

• Sienna

  2015 Toyota Sienna LE 3.5L V6 GAS Automatic 6 Speed Mini Passenger Van
  Added Jul 2022 • 4 Fuel-ups

  Property of Andrew414

• 20.9 Avg MPG

• My Sienna

  2015 Toyota Sienna L 3.5L V6 GAS Automatic 6 Speed
  Added May 2022 • 6 Fuel-ups

  Property of pskiba

• 23.0 Avg MPG

• Minivan mama

  2015 Toyota Sienna XLE 3.5L V6 GAS Automatic 6 Speed Mini Passenger Van
  Added Feb 2019 • 193 Fuel-ups

  Property of swr619

• 19.6 Avg MPG

• 15 Sienna

  2015 Toyota Sienna LE 3.5L V6 GAS Automatic 6 Speed Mini Passenger Van
  Added Aug 2015 • 168 Fuel-ups

  Property of abelement

• 19.8 Avg MPG

• My Sienna

  2015 Toyota Sienna XLE 3.5L V6 GAS Automatic 6 Speed
  Added Apr 2022 • 12 Fuel-ups

  Property of RobFuel

• 19.7 Avg MPG

• 2015 Sienna

  2015 Toyota Sienna XLE 3.5L V6 GAS Automatic 6 Speed
  Added Sep 2016 • 4 Fuel-ups

  Property of uslaotan88

• 52.6 Avg MPG

• Sienna

  2015 Toyota Sienna LE 3.5L V6 GAS Automatic 6 Speed Mini Passenger Van
  Added Mar 2019 • 5 Fuel-ups

  Property of coachjb2gmailcom

• 29.6 Avg MPG

• Chestnut

  2015 Toyota Sienna Limited 3.5L V6 GAS Automatic 6 Speed
  Added Mar 2021 • 86 Fuel-ups

  Property of maybu

• 20.4 Avg MPG

• 2015 Sienna

  2015 Toyota Sienna LE 3.5L V6 GAS Automatic 6 Speed
  Added May 2018 • 163 Fuel-ups

  Property of sstaylor76

• 19.7 Avg MPG

• Swagger Wagon

  2015 Toyota Sienna XLE 3.5L V6 GAS Automatic 6 Speed Mini Passenger Van
  Added Aug 2018 • 162 Fuel-ups

  Property of aheninger

• 18.2 Avg MPG

• Sienna

  2015 Toyota Sienna Limited 3.5L V6 GAS Automatic 6 Speed Mini Passenger Van
  Added Jun 2019 • 91 Fuel-ups

  Property of Weichihlin

• 34.7 Avg MPG

• My Sienna

  2015 Toyota Sienna Limited 3.5L V6 GAS Automatic 6 Speed
  Added Mar 2022 • 6 Fuel-ups

  Property of wdarner

• 19.3 Avg MPG

• My Sienna

  2015 Toyota Sienna XLE 3.5L V6 GAS Automatic 6 Speed
  Added Aug 2018 • 127 Fuel-ups

  Property of izzydrewlynn

• 20.2 Avg MPG

• 2015 Sienna

  2015 Toyota Sienna Limited 3.5L V6 GAS Automatic 6 Speed
  Added Jun 2020 • 12 Fuel-ups

  Property of sdburrow

• 21.4 Avg MPG

• Tania XLE

  2015 Toyota Sienna XLE 3.5L V6 GAS Automatic 6 Speed
  Added Apr 2017 • 332 Fuel-ups

  Property of dekiewiet

• 21.9 Avg MPG

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