Based on data from 33 vehicles, 990 fuel-ups and 240,527 miles of driving, the 2003 Porsche Boxster gets a combined Avg MPG of 21.34 with a 0.32 MPG margin of error.

Any Engine Type 2.7L H6 GAS (13) 3.2L H6 GAS (18) H6 GAS (2) Any Body Style Convertible (14) Any Submodel Roadster (5) Base (8) Roadster S (8) S (10) Other (2)

Below you can see a distribution of the fuel-ups with 21 outliers (2.08%) removed.

Following shows the average MPG of each of the 33 vehicles in the system.

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• boxster

  2003 Porsche Boxster 2.7L H6 GAS Manual 5 Speed Convertible
  Added Oct 2021 • 7 Fuel-ups

  Property of codingismy11to7

• 13.9 Avg MPG

• My Boxster

  2003 Porsche Boxster S 3.2L H6 GAS Manual 6 Speed
  Added Nov 2020 • 22 Fuel-ups

  Property of bnn1044

• 17.8 Avg MPG

• Porsche Boxster

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

  Property of USTruck

• 24.3 Avg MPG

• Porsche

  2003 Porsche Boxster S 3.2L H6 GAS Manual 6 Speed
  Added Jun 2017 • 288 Fuel-ups

  Property of garyboutwell

• 25.7 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

• Boxster S

  2003 Porsche Boxster S 3.2L H6 GAS Manual 6 Speed Convertible
  Added Feb 2021 • 20 Fuel-ups

  Property of sinaz

• 20.5 Avg MPG

• 986 Boxster S

  2003 Porsche Boxster Roadster S 3.2L H6 GAS Manual 6 Speed Convertible
  Added Apr 2022 • 3 Fuel-ups

  Property of Jace

• 27.4 Avg MPG

• Boxster S

  2003 Porsche Boxster S 3.2L H6 GAS Manual 6 Speed
  Added Mar 2022 • 3 Fuel-ups

  Property of kranzandrew

• 26.2 Avg MPG

• Porsche, Boxster

  2003 Porsche Boxster Roadster 2.7L H6 GAS Standard 5 Speed
  Added Aug 2017 • 74 Fuel-ups

  Property of FordTuff

• 21.2 Avg MPG

• My Boxster

  2003 Porsche Boxster Roadster S 3.2L H6 GAS Manual 6 Speed
  Added Aug 2019 • 25 Fuel-ups

  Property of Antfuel

• 16.9 Avg MPG

• Boxster

  2003 Porsche Boxster S 3.2L H6 GAS Manual 6 Speed Convertible
  Added Aug 2018 • 87 Fuel-ups

  Property of vishal

• 17.6 Avg MPG

• boxster

  2003 Porsche Boxster 2.7L H6 GAS Manual 5 Speed Convertible
  Added May 2021 • 6 Fuel-ups

  Property of codingismy11to7

• 14.6 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

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