Based on data from 259 vehicles, 26,188 fuel-ups and 7,008,443 miles of driving, the 2015 Toyota Sienna gets a combined Avg MPG of 19.43 with a 0.04 MPG margin of error.

Any Engine Type 3.5L V6 GAS (257) Any Body Style Mini Passenger Van (86) Any Submodel L (5) Base (7) SE (28) Limited (35) LE (70) XLE (112) Other (2)

Below you can see a distribution of the fuel-ups with 985 outliers (3.62%) removed.

Following shows the average MPG of each of the 259 vehicles in the system.

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• Sienna

  2015 Toyota Sienna Limited 3.5L V6 GAS Automatic 6 Speed Mini Passenger Van
  Added Jun 2018 • 188 Fuel-ups

  Property of cstarky15

• 20.7 Avg MPG

• 2015 Sienna

  2015 Toyota Sienna XLE 3.5L V6 GAS Automatic 6 Speed
  Added Jul 2017 • 11 Fuel-ups

  Property of vgresham

• 22.3 Avg MPG

• My Sienna

  2015 Toyota Sienna XLE 3.5L V6 GAS Automatic 6 Speed
  Added Dec 2019 • 4 Fuel-ups

  Property of warrenlutz

• 18.5 Avg MPG

• Sienna

  2015 Toyota Sienna XLE 3.5L V6 GAS Automatic 6 Speed Mini Passenger Van
  Added Aug 2019 • 10 Fuel-ups

  Property of QHGAmSXY8ZBkSlWyoo1i

• 18.2 Avg MPG

• My Sienna

  2015 Toyota Sienna XLE 3.5L V6 GAS Automatic 6 Speed
  Added Jul 2017 • 50 Fuel-ups

  Property of viveksunderam

• 19.6 Avg MPG

• The Sienna

  2015 Toyota Sienna SE 3.5L V6 GAS Automatic 6 Speed Mini Passenger Van
  Added Oct 2017 • 111 Fuel-ups

  Property of jasonska

• 17.0 Avg MPG

• SWAGGER WAGON

  2015 Toyota Sienna LE 3.5L V6 GAS Automatic 6 Speed Mini Passenger Van
  Added Sep 2018 • 80 Fuel-ups

  Property of lbzimmer

• 21.8 Avg MPG

• marshmallow

  2015 Toyota Sienna L 3.5L V6 GAS Automatic 6 Speed Mini Passenger Van
  Added Jun 2018 • 33 Fuel-ups

  Property of siennastarcraft

• 24.1 Avg MPG

• My Sienna

  2015 Toyota Sienna 3.5L V6 GAS Automatic 6 Speed
  Added Aug 2019 • 16 Fuel-ups

  Property of hasenohrl_stacie

• 19.8 Avg MPG

• Mom's 2015 Sienna

  2015 Toyota Sienna XLE 3.5L V6 GAS Automatic 6 Speed
  Added Sep 2016 • 160 Fuel-ups

  Property of kwallisalley

• 23.6 Avg MPG

• Steph's Minivan

  2015 Toyota Sienna LE 3.5L V6 GAS Automatic 6 Speed Mini Passenger Van
  Added Mar 2017 • 131 Fuel-ups

  Property of kd5tvi

• 18.8 Avg MPG

• Sienna

  2015 Toyota Sienna LE 3.5L V6 GAS Automatic 6 Speed Mini Passenger Van
  Added Sep 2018 • 66 Fuel-ups

  Property of greydogs

• 22.4 Avg MPG

• 2015_Sienna_SE

  2015 Toyota Sienna SE 3.5L V6 GAS Automatic 6 Speed Mini Passenger Van
  Added Jun 2019 • 29 Fuel-ups

  Property of fujiki919

• 29.5 Avg MPG

• Toyota Sienna

  2015 Toyota Sienna SE 3.5L V6 GAS Automatic 6 Speed Mini Passenger Van
  Added Aug 2019 • 6 Fuel-ups

  Property of Bennett18980

• 23.4 Avg MPG

• My2015SiennaFWD

  2015 Toyota Sienna LE 3.5L V6 GAS Automatic 6 Speed Mini Passenger Van
  Added Jan 2017 • 251 Fuel-ups

  Property of telal01

• 23.5 Avg MPG

• Van 11

  2015 Toyota Sienna LE 3.5L V6 GAS Automatic 6 Speed
  Added May 2019 • 7 Fuel-ups

  Property of PLC_Vans

• 16.7 Avg MPG

• My Sienna

  2015 Toyota Sienna Limited 3.5L V6 GAS Automatic 6 Speed Mini Passenger Van
  Added Apr 2018 • 10 Fuel-ups

  Property of bpherson

• 53.4 Avg MPG

• Sienna XLE-P

  2015 Toyota Sienna XLE 3.5L V6 GAS Automatic 6 Speed Mini Passenger Van
  Added Jun 2015 • 151 Fuel-ups

  Property of BlueHound

• 15.5 Avg MPG

• My Sienna

  2015 Toyota Sienna 3.5L V6 GAS Automatic 6 Speed
  Added May 2017 • 47 Fuel-ups

  Property of burjui

• 19.5 Avg MPG

• My Sienna

  2015 Toyota Sienna XLE 3.5L V6 GAS Automatic 6 Speed
  Added May 2019 • 3 Fuel-ups

  Property of BPeak

• 24.8 Avg MPG

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