Based on data from 37 vehicles, 1,747 fuel-ups and 495,812 miles of driving, the 2003 Toyota Sienna gets a combined Avg MPG of 18.84 with a 0.16 MPG margin of error.

Any Engine Type 3.0L V6 GAS (30) V6 GAS (6) Any Body Style Mini Passenger Van (12) Any Submodel CE (7) LE (11) XLE (13) Other (6)

Below you can see a distribution of the fuel-ups with 155 outliers (8.15%) removed.

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

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• Katherine's Sienna

  2003 Toyota Sienna XLE 3.0L V6 GAS Automatic 4 Speed
  Added Mar 2017 • 7 Fuel-ups

  Property of kzlewis

• 18.0 Avg MPG

• My Sienna

  2003 Toyota Sienna XLE 3.0L V6 GAS Automatic 4 Speed
  Added Jun 2017 • 5 Fuel-ups

  Property of leffjay

• 22.1 Avg MPG

• Sienna

  2003 Toyota Sienna CE 3.0L V6 GAS Automatic 4 Speed Mini Passenger Van
  Added Aug 2008 • 502 Fuel-ups

  Property of philcaruso

• 20.8 Avg MPG

• Great White Shark

  2003 Toyota Sienna GAS V6
  Added Apr 2013 • 7 Fuel-ups

  Property of zstand

• 30.2 Avg MPG

• 03 Toyota Sienna

  2003 Toyota Sienna LE 3.0L V6 GAS Automatic 4 Speed
  Added Mar 2017 • 152 Fuel-ups

  Property of Omab

• 17.4 Avg MPG

• Sienna

  2003 Toyota Sienna CE 3.0L V6 GAS Automatic 4 Speed Mini Passenger Van
  Added Dec 2016 • 11 Fuel-ups

  Property of RealDominique

• 7.1 Avg MPG

• Silver Sienna

  2003 Toyota Sienna LE 3.0L V6 GAS Automatic 4 Speed Mini Passenger Van
  Added Mar 2009 • 49 Fuel-ups

  Property of kalihiboy

• 18.3 Avg MPG

• truck 5

  2003 Toyota Sienna LE 3.0L V6 GAS Automatic 4 Speed
  Added Jul 2014 • 32 Fuel-ups

  Property of towjoe75

• 15.3 Avg MPG

• orange

  2003 Toyota Sienna GAS V6
  Added Mar 2014 • 12 Fuel-ups

  Property of LibbyLo

• 25.8 Avg MPG

• My Sienna

  2003 Toyota Sienna GAS V6
  Added Jun 2012 • 27 Fuel-ups

  Property of BenjaminWagner

• 21.2 Avg MPG

• Sienna

  2003 Toyota Sienna XLE 3.0L V6 GAS Automatic 4 Speed
  Added Mar 2017 • 78 Fuel-ups

  Property of toy4runnersr5

• 19.7 Avg MPG

• Erica's Van

  2003 Toyota Sienna CE
  Added Jun 2013 • 4 Fuel-ups

  Property of joshlehman

• 28.0 Avg MPG

• Katherine Blake

  2003 Toyota Sienna XLE 3.0L V6 GAS Automatic 4 Speed
  Added Nov 2018 • 10 Fuel-ups

  Property of Mkblake0804

• 22.7 Avg MPG

• Katherine Blake

  2003 Toyota Sienna XLE 3.0L V6 GAS Automatic 4 Speed
  Added Nov 2018 • 10 Fuel-ups

  Property of Mkblake0804

• 22.7 Avg MPG

• sienna

  2003 Toyota Sienna GAS V6
  Added Mar 2012 • 13 Fuel-ups

  Property of yaris4062007

• 20.1 Avg MPG

• Sienna

  2003 Toyota Sienna XLE 3.0L V6 GAS Automatic 4 Speed
  Added Mar 2018 • 9 Fuel-ups

  Property of mainesb

• 18.4 Avg MPG

• Sienna Van

  2003 Toyota Sienna GAS V6
  Added Jul 2009 • 3 Fuel-ups

  Property of jamner

• 21.5 Avg MPG

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