Based on data from 31 vehicles, 1,134 fuel-ups and 278,171 miles of driving, the 2003 Porsche Boxster gets a combined Avg MPG of 21.49 with a 0.30 MPG margin of error.

Any Engine Type 2.7L H6 GAS (12) 3.2L H6 GAS (17) H6 GAS (2) Any Body Style Convertible (12) Any Submodel Roadster (5) Base (7) Roadster S (7) S (10) Other (2)

Below you can see a distribution of the fuel-ups with 24 outliers (2.07%) removed.

Following shows the average MPG of each of the 31 vehicles in the system.

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• My Boxster

  2003 Porsche Boxster S 3.2L H6 GAS Manual 6 Speed
  Added Nov 2020 • 39 Fuel-ups

  Property of bnn1044

• 17.6 Avg MPG

• My Boxster

  2003 Porsche Boxster Roadster S 3.2L H6 GAS Manual 6 Speed
  Added Aug 2019 • 36 Fuel-ups

  Property of Antfuel

• 16.9 Avg MPG

• Boxster S

  2003 Porsche Boxster S 3.2L H6 GAS Manual 6 Speed Convertible
  Added Feb 2021 • 38 Fuel-ups

  Property of sinaz

• 20.0 Avg MPG

• Porsche

  2003 Porsche Boxster S 3.2L H6 GAS Manual 6 Speed
  Added Jun 2017 • 355 Fuel-ups

  Property of garyboutwell

• 25.9 Avg MPG

• 2003 Boxster S

  2003 Porsche Boxster S 3.2L H6 GAS Manual 6 Speed
  Added Mar 2022 • 13 Fuel-ups

  Property of kranzandrew

• 17.5 Avg MPG

• Porsche, Boxster

  2003 Porsche Boxster Roadster 2.7L H6 GAS Standard 5 Speed
  Added Aug 2017 • 78 Fuel-ups

  Property of FordTuff

• 21.0 Avg MPG

• 986 Boxster S

  2003 Porsche Boxster Roadster S 3.2L H6 GAS Manual 6 Speed Convertible
  Added Apr 2022 • 32 Fuel-ups

  Property of Jace

• 24.9 Avg MPG

• Z Porsche Boxster

  2003 Porsche Boxster Roadster 2.7L H6 GAS Manual 5 Speed
  Added Dec 2021 • 18 Fuel-ups

  Property of USTruck

• 24.3 Avg MPG

• Boxster

  2003 Porsche Boxster S 3.2L H6 GAS Manual 6 Speed Convertible
  Added Aug 2018 • 92 Fuel-ups

  Property of vishal

• 17.5 Avg MPG

• boxster

  2003 Porsche Boxster 2.7L H6 GAS Manual 5 Speed Convertible
  Added Oct 2022 • 7 Fuel-ups

  Property of codingismy11to7

• 13.9 Avg MPG

• My Boxster

  2003 Porsche Boxster Roadster 2.7L H6 GAS Automatic 5 Speed
  Added Aug 2021 • 7 Fuel-ups

  Property of Vasut

• 18.5 Avg MPG

• My Boxster

  2003 Porsche Boxster Roadster S 3.2L H6 GAS Standard 6 Speed
  Added Apr 2017 • 105 Fuel-ups

  Property of jlaferriere

• 24.1 Avg MPG

• Porsche Boxster S

  2003 Porsche Boxster S 3.2L H6 GAS Manual 6 Speed Convertible
  Added Dec 2011 • 43 Fuel-ups

  Property of MartynH

• 21.2 Avg MPG

• 03 BXSTR

  2003 Porsche Boxster 2.7L H6 GAS Standard 5 Speed Convertible
  Added Apr 2017 • 84 Fuel-ups

  Property of teleplayer

• 22.0 Avg MPG

• My Boxster

  2003 Porsche Boxster S 3.2L H6 GAS Automatic 5 Speed
  Added Dec 2019 • 6 Fuel-ups

  Property of mahir1

• 5.9 Avg MPG

• Project DarkSide

  2003 Porsche Boxster Roadster 2.7L H6 GAS Manual 5 Speed Convertible
  Added Dec 2019 • 6 Fuel-ups

  Property of sciroccorrado

• 24.3 Avg MPG

• Boxster

  2003 Porsche Boxster 2.7L H6 GAS Automatic 5 Speed Convertible
  Added Sep 2016 • 6 Fuel-ups

  Property of cndpriusv

• 23.6 Avg MPG

• My Boxster

  2003 Porsche Boxster Roadster S 3.2L H6 GAS Automatic 5 Speed
  Added Aug 2019 • 4 Fuel-ups

  Property of sf90291

• 21.3 Avg MPG

• Boxster

  2003 Porsche Boxster 2.7L H6 GAS Manual 5 Speed Convertible
  Added Jun 2018 • 25 Fuel-ups

  Property of spikesheppard

• 19.6 Avg MPG

• 2003 Boxster

  2003 Porsche Boxster 2.7L H6 GAS Automatic 5 Speed
  Added Sep 2018 • 6 Fuel-ups

  Property of Jays964

• 27.6 Avg MPG

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