Based on data from 252 vehicles, 24,104 fuel-ups and 6,454,146 miles of driving, the 2015 Toyota Sienna gets a combined Avg MPG of 19.42 with a 0.05 MPG margin of error.

Any Engine Type 3.5L V6 GAS (250) Any Body Style Mini Passenger Van (86) Any Submodel L (5) Base (7) SE (28) Limited (32) LE (69) XLE (109) Other (2)

Below you can see a distribution of the fuel-ups with 929 outliers (3.71%) removed.

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

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• My Sienna

  2015 Toyota Sienna LE 3.5L V6 GAS Automatic 6 Speed Mini Passenger Van
  Added Aug 2021 • 195 Fuel-ups

  Property of mashfaq

• 19.0 Avg MPG

• My Sienna

  2015 Toyota Sienna SE 3.5L V6 GAS Automatic 6 Speed
  Added Feb 2021 • 130 Fuel-ups

  Property of jon3

• 22.0 Avg MPG

• Crimson

  2015 Toyota Sienna SE 3.5L V6 GAS Automatic 6 Speed
  Added Feb 2021 • 187 Fuel-ups

  Property of padgett0904

• 14.8 Avg MPG

• Van

  2015 Toyota Sienna XLE 3.5L V6 GAS Automatic 6 Speed Mini Passenger Van
  Added Aug 2021 • 136 Fuel-ups

  Property of tillett

• 24.1 Avg MPG

• 2015 Sienna

  2015 Toyota Sienna XLE 3.5L V6 GAS Automatic 6 Speed
  Added Aug 2020 • 85 Fuel-ups

  Property of cdarrow

• 21.8 Avg MPG

• Grey Van

  2015 Toyota Sienna Limited 3.5L V6 GAS Automatic 6 Speed Mini Passenger Van
  Added Jul 2018 • 170 Fuel-ups

  Property of pupgolden

• 17.5 Avg MPG

• Toyota Sienna

  2015 Toyota Sienna XLE 3.5L V6 GAS Automatic 6 Speed Mini Passenger Van
  Added Jan 2016 • 239 Fuel-ups

  Property of PaulG

• 17.7 Avg MPG

• Erin

  2015 Toyota Sienna XLE 3.5L V6 GAS Automatic 6 Speed Mini Passenger Van
  Added Dec 2019 • 298 Fuel-ups

  Property of ecorcella

• 19.2 Avg MPG

• Sienna

  2015 Toyota Sienna L 3.5L V6 GAS Automatic 6 Speed
  Added Jul 2019 • 130 Fuel-ups

  Property of rht413

• 21.7 Avg MPG

• Toyota Sienna Limited

  2015 Toyota Sienna Limited 3.5L V6 GAS Automatic 6 Speed
  Added Aug 2016 • 305 Fuel-ups

  Property of bernardwai

• 16.0 Avg MPG

• Sienna

  2015 Toyota Sienna SE 3.5L V6 GAS Automatic 6 Speed Mini Passenger Van
  Added Nov 2017 • 323 Fuel-ups

  Property of erittenhouse

• 18.9 Avg MPG

• My Sienna

  2015 Toyota Sienna LE 3.5L V6 GAS Automatic 6 Speed
  Added Aug 2016 • 184 Fuel-ups

  Property of trusttoyota

• 21.6 Avg MPG

• Sienna

  2015 Toyota Sienna XLE 3.5L V6 GAS Automatic 6 Speed
  Added Jul 2015 • 252 Fuel-ups

  Property of avey

• 17.4 Avg MPG

• Foxx Shuttle MK 2 AKA The Grey Ghost

  2015 Toyota Sienna XLE 3.5L V6 GAS Automatic 6 Speed
  Added Jul 2018 • 359 Fuel-ups

  Property of Fyremane

• 19.1 Avg MPG

• Toyota Sienna

  2015 Toyota Sienna XLE 3.5L V6 GAS Automatic 6 Speed Mini Passenger Van
  Added Oct 2017 • 273 Fuel-ups

  Property of saltygunner

• 19.7 Avg MPG

• Sienna

  2015 Toyota Sienna XLE 3.5L V6 GAS Automatic 6 Speed Mini Passenger Van
  Added Oct 2017 • 430 Fuel-ups

  Property of newname23

• 19.1 Avg MPG

• 2015 Sienna

  2015 Toyota Sienna Limited 3.5L V6 GAS Automatic 6 Speed
  Added Mar 2021 • 142 Fuel-ups

  Property of p4xson

• 21.4 Avg MPG

• Sienna

  2015 Toyota Sienna SE 3.5L V6 GAS Automatic 6 Speed Mini Passenger Van
  Added Mar 2020 • 110 Fuel-ups

  Property of OMARHDIAZ

• 17.7 Avg MPG

• Toyota Sienna

  2015 Toyota Sienna XLE 3.5L V6 GAS Automatic 6 Speed
  Added Aug 2016 • 363 Fuel-ups

  Property of stricklandrw

• 19.7 Avg MPG

• My Sienna

  2015 Toyota Sienna XLE 3.5L V6 GAS Automatic 6 Speed
  Added Mar 2023 • 39 Fuel-ups

  Property of lukeleichty

• 21.7 Avg MPG

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