Based on data from 37 vehicles, 4,026 fuel-ups and 1,067,332 miles of driving, the 2020 Toyota Sienna gets a combined Avg MPG of 20.93 with a 0.14 MPG margin of error.

Any Engine Type 3.5L V6 GAS (32) V6 GAS (1) Any Body Style Mini Passenger Van (10) Any Submodel Base (1) Limited (1) CE (1) SE Premium (1) XLE Premium (1) Limited Premium (2) SE (4) LE (8) XLE (18)

Below you can see a distribution of the fuel-ups with 110 outliers (2.66%) removed.

Following shows the average MPG of each of the 37 vehicles in the system.

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• 2020 Sienna

  2020 Toyota Sienna XLE 3.5L V6 GAS Automatic 8 Speed
  Added Nov 2019 • 377 Fuel-ups

  Property of Bodine95

• 20.5 Avg MPG

• My Sienna

  2020 Toyota Sienna XLE 3.5L V6 GAS Automatic 8 Speed
  Added Aug 2020 • 171 Fuel-ups

  Property of adestinyglimmers

• 20.8 Avg MPG

• Sienna

  2020 Toyota Sienna XLE 3.5L V6 GAS Automatic 8 Speed Mini Passenger Van
  Added Apr 2021 • 193 Fuel-ups

  Property of 74Scout

• 20.4 Avg MPG

• Bev

  2020 Toyota Sienna Limited Premium 3.5L V6 GAS Automatic 8 Speed
  Added Feb 2020 • 141 Fuel-ups

  Property of DCTraveler

• 20.3 Avg MPG

• My Sienna

  2020 Toyota Sienna XLE
  Added Dec 2019 • 224 Fuel-ups

  Property of tabgrmi

• 24.4 Avg MPG

• Sienna LE 2020

  2020 Toyota Sienna LE
  Added Sep 2019 • 301 Fuel-ups

  Property of Polin2012

• 20.7 Avg MPG

• 2020 Sienna

  2020 Toyota Sienna XLE Automatic 8 Speed Mini Passenger Van
  Added Jan 2020 • 42 Fuel-ups

  Property of DLG14305

• 17.8 Avg MPG

• My Sienna

  2020 Toyota Sienna XLE 3.5L V6 GAS Automatic 8 Speed
  Added Dec 2021 • 228 Fuel-ups

  Property of Kb2453

• 19.4 Avg MPG

• My Sienna

  2020 Toyota Sienna XLE
  Added Dec 2019 • 82 Fuel-ups

  Property of tbgree00

• 23.3 Avg MPG

• Sienna

  2020 Toyota Sienna XLE 3.5L V6 GAS Automatic 8 Speed
  Added Jan 2023 • 90 Fuel-ups

  Property of ktmachayan

• 19.9 Avg MPG

• Sienna

  2020 Toyota Sienna XLE 3.5L V6 GAS Automatic 8 Speed
  Added Dec 2019 • 249 Fuel-ups

  Property of michaelh950

• 21.4 Avg MPG

• 2020 Toyota Sienna

  2020 Toyota Sienna LE 3.5L V6 GAS Automatic 8 Speed
  Added Aug 2020 • 180 Fuel-ups

  Property of jfhelbling

• 23.7 Avg MPG

• My Sienna

  2020 Toyota Sienna XLE 3.5L V6 GAS Automatic 8 Speed
  Added Sep 2023 • 224 Fuel-ups

  Property of TomEz

• 24.7 Avg MPG

• Blue Sienna

  2020 Toyota Sienna LE 3.5L V6 GAS Automatic 8 Speed Mini Passenger Van
  Added May 2020 • 205 Fuel-ups

  Property of Wecline1

• 24.2 Avg MPG

• My Sienna

  2020 Toyota Sienna LE 3.5L V6 GAS Automatic 8 Speed
  Added Nov 2021 • 65 Fuel-ups

  Property of RSarfaty

• 17.4 Avg MPG

• Toyota Sienna

  2020 Toyota Sienna XLE 3.5L V6 GAS Automatic 8 Speed Mini Passenger Van
  Added Aug 2020 • 91 Fuel-ups

  Property of nbettger

• 21.8 Avg MPG

• 2020 Toyota Sienna

  2020 Toyota Sienna XLE 3.5L V6 GAS Automatic 8 Speed
  Added Nov 2020 • 289 Fuel-ups

  Property of Biodiesel99

• 21.5 Avg MPG

• My Sienna

  2020 Toyota Sienna LE 3.5L V6 GAS Automatic 8 Speed
  Added Jun 2020 • 208 Fuel-ups

  Property of batesi71

• 19.5 Avg MPG

• RISE UP

  2020 Toyota Sienna XLE 3.5L V6 GAS Automatic 8 Speed Mini Passenger Van
  Added Jan 2020 • 238 Fuel-ups

  Property of pcrinkydink

• 17.5 Avg MPG

• 2020 Toyota Sienna Van

  2020 Toyota Sienna XLE 3.5L V6 GAS Automatic 8 Speed Mini Passenger Van
  Added Jan 2021 • 195 Fuel-ups

  Property of tomnmarlie

• 22.2 Avg MPG

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