Based on data from 37 vehicles, 4,280 fuel-ups and 1,135,738 miles of driving, the 2020 Toyota Sienna gets a combined Avg MPG of 20.95 with a 0.13 MPG margin of error.

Any Engine Type 3.5L V6 GAS (33) 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 122 outliers (2.77%) removed.

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

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• My Sienna

  2020 Toyota Sienna XLE 3.5L V6 GAS Automatic 8 Speed
  Added Aug 2020 • 186 Fuel-ups

  Property of adestinyglimmers

• 20.9 Avg MPG

• Blue Sienna

  2020 Toyota Sienna LE 3.5L V6 GAS Automatic 8 Speed Mini Passenger Van
  Added May 2020 • 219 Fuel-ups

  Property of Wecline1

• 24.2 Avg MPG

• 2020 Toyota Sienna

  2020 Toyota Sienna XLE 3.5L V6 GAS Automatic 8 Speed
  Added Nov 2020 • 315 Fuel-ups

  Property of Biodiesel99

• 21.5 Avg MPG

• Bev

  2020 Toyota Sienna Limited Premium 3.5L V6 GAS Automatic 8 Speed
  Added Feb 2020 • 152 Fuel-ups

  Property of DCTraveler

• 20.3 Avg MPG

• My Sienna

  2020 Toyota Sienna LE 3.5L V6 GAS Automatic 8 Speed
  Added Jun 2020 • 218 Fuel-ups

  Property of batesi71

• 19.5 Avg MPG

• Sienna

  2020 Toyota Sienna XLE 3.5L V6 GAS Automatic 8 Speed
  Added Dec 2019 • 263 Fuel-ups

  Property of michaelh950

• 21.4 Avg MPG

• Toyota Sienna

  2020 Toyota Sienna XLE 3.5L V6 GAS Automatic 8 Speed Mini Passenger Van
  Added Aug 2020 • 103 Fuel-ups

  Property of nbettger

• 21.8 Avg MPG

• Sienna

  2020 Toyota Sienna XLE 3.5L V6 GAS Automatic 8 Speed
  Added Jan 2023 • 112 Fuel-ups

  Property of ktmachayan

• 20.1 Avg MPG

• My Sienna

  2020 Toyota Sienna XLE 3.5L V6 GAS Automatic 8 Speed
  Added Dec 2019 • 235 Fuel-ups

  Property of tabgrmi

• 24.4 Avg MPG

• 2020 Sienna

  2020 Toyota Sienna XLE 3.5L V6 GAS Automatic 8 Speed
  Added Nov 2019 • 404 Fuel-ups

  Property of Bodine95

• 20.5 Avg MPG

• RISE UP

  2020 Toyota Sienna XLE 3.5L V6 GAS Automatic 8 Speed Mini Passenger Van
  Added Jan 2020 • 253 Fuel-ups

  Property of pcrinkydink

• 17.6 Avg MPG

• My Sienna

  2020 Toyota Sienna XLE 3.5L V6 GAS Automatic 8 Speed
  Added Sep 2023 • 235 Fuel-ups

  Property of TomEz

• 24.7 Avg MPG

• Sienna-George's

  2020 Toyota Sienna SE Premium V6 GAS Automatic 7 Speed Mini Passenger Van
  Added Nov 2019 • 73 Fuel-ups

  Property of nebugeorge

• 21.7 Avg MPG

• Sienna

  2020 Toyota Sienna XLE 3.5L V6 GAS Automatic 8 Speed Mini Passenger Van
  Added Apr 2021 • 209 Fuel-ups

  Property of 74Scout

• 20.4 Avg MPG

• My Sienna

  2020 Toyota Sienna XLE 3.5L V6 GAS Automatic 8 Speed
  Added Dec 2021 • 245 Fuel-ups

  Property of Kb2453

• 19.5 Avg MPG

• 2020 Toyota Sienna Van

  2020 Toyota Sienna XLE 3.5L V6 GAS Automatic 8 Speed Mini Passenger Van
  Added Jan 2021 • 213 Fuel-ups

  Property of tomnmarlie

• 22.5 Avg MPG

• My Sienna

  2020 Toyota Sienna LE 3.5L V6 GAS Automatic 8 Speed
  Added Nov 2021 • 77 Fuel-ups

  Property of RSarfaty

• 17.8 Avg MPG

• My Sienna

  2020 Toyota Sienna XLE
  Added Dec 2019 • 86 Fuel-ups

  Property of tbgree00

• 23.2 Avg MPG

• 2020 Sienna

  2020 Toyota Sienna XLE Automatic 8 Speed Mini Passenger Van
  Added Jan 2020 • 43 Fuel-ups

  Property of DLG14305

• 17.8 Avg MPG

• 2020 Toyota Sienna

  2020 Toyota Sienna LE 3.5L V6 GAS Automatic 8 Speed
  Added Aug 2020 • 188 Fuel-ups

  Property of jfhelbling

• 23.8 Avg MPG

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