Based on data from 25 vehicles, 741 fuel-ups and 178,415 miles of driving, the 2003 Porsche Boxster gets a combined Avg MPG of 21.21 with a 0.32 MPG margin of error.

Any Engine Type 2.7L H6 GAS (9) 3.2L H6 GAS (14) H6 GAS (2) Any Body Style Convertible (10) Any Submodel Roadster (3) Base (6) S (7) Roadster S (7) Other (2)

Below you can see a distribution of the fuel-ups with 18 outliers (2.37%) removed.

Following shows the average MPG of each of the 25 vehicles in the system.

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• My Boxster

  2003 Porsche Boxster Roadster S 3.2L H6 GAS Standard 6 Speed
  Added Apr 2017 • 88 Fuel-ups

  Property of jlaferriere

• 23.2 Avg MPG

• My Boxster

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

  Property of mahir1

• 10.0 Avg MPG

• Porsche

  2003 Porsche Boxster S 3.2L H6 GAS Manual 6 Speed
  Added Jun 2017 • 188 Fuel-ups

  Property of garyboutwell

• 25.5 Avg MPG

• Porsche, Boxster

  2003 Porsche Boxster Roadster 2.7L H6 GAS Standard 5 Speed
  Added Aug 2017 • 53 Fuel-ups

  Property of FordTuff

• 20.2 Avg MPG

• My Boxster

  2003 Porsche Boxster Roadster S 3.2L H6 GAS Manual 6 Speed
  Added Aug 2019 • 18 Fuel-ups

  Property of Antfuel

• 17.6 Avg MPG

• 03 BXSTR

  2003 Porsche Boxster 2.7L H6 GAS Standard 5 Speed Convertible
  Added Apr 2017 • 82 Fuel-ups

  Property of teleplayer

• 21.9 Avg MPG

• Project DarkSide

  2003 Porsche Boxster Roadster 2.7L H6 GAS Manual 5 Speed Convertible
  Added Dec 2019 • 4 Fuel-ups

  Property of sciroccorrado

• 24.5 Avg MPG

• Boxster

  2003 Porsche Boxster S 3.2L H6 GAS Manual 6 Speed Convertible
  Added Aug 2018 • 36 Fuel-ups

  Property of vishal

• 18.1 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

• Porsche Boxster S

  2003 Porsche Boxster S 3.2L H6 GAS Manual 6 Speed Convertible
  Added Dec 2011 • 42 Fuel-ups

  Property of MartynH

• 21.3 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

• Leo

  2003 Porsche Boxster S 3.2L H6 GAS Automatic 5 Speed
  Added Jul 2017 • 21 Fuel-ups

  Property of TimsterC

• 17.9 Avg MPG

• Boxster

  2003 Porsche Boxster Roadster S 3.2L H6 GAS Standard 6 Speed Convertible
  Added Jun 2018 • 9 Fuel-ups

  Property of ColinAshdown

• 19.9 Avg MPG

• Boxster

  2003 Porsche Boxster S 3.2L H6 GAS Standard 6 Speed
  Added Nov 2016 • 33 Fuel-ups

  Property of olavandrade

• 22.9 Avg MPG

• Boxster

  2003 Porsche Boxster Roadster S 3.2L H6 GAS Standard 6 Speed
  Added Mar 2017 • 17 Fuel-ups

  Property of wizzini

• 19.3 Avg MPG

• Boxster

  2003 Porsche Boxster Roadster S 3.2L H6 GAS Standard 6 Speed
  Added Mar 2018 • 26 Fuel-ups

  Property of olavandrade

• 23.0 Avg MPG

• Boxfish

  2003 Porsche Boxster 2.7L H6 GAS Standard 5 Speed Convertible
  Added Feb 2016 • 19 Fuel-ups

  Property of sharq

• 26.0 Avg MPG

• My Boxster

  2003 Porsche Boxster S 3.2L H6 GAS Standard 6 Speed Convertible
  Added Feb 2015 • 29 Fuel-ups

  Property of jam3zs

• 19.5 Avg MPG

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