Based on data from 18 vehicles, 1,248 fuel-ups and 268,795 miles of driving, the 2008 Porsche Boxster gets a combined Avg MPG of 18.46 with a 0.25 MPG margin of error.

Any Engine Type 2.7L H6 GAS (4) 3.4L H6 GAS (10) H6 GAS (3) Any Body Style Convertible (5) Any Submodel RS 60 Spyder (3) Base (4) S (7) Other (4)

Below you can see a distribution of the fuel-ups with 28 outliers (2.19%) removed.

Following shows the average MPG of each of the 18 vehicles in the system.

• Porsche Boxster S

  2008 Porsche Boxster S 3.4L H6 GAS Manual 6 Speed
  Added Sep 2016 • 320 Fuel-ups

  Property of RufCTR

• 17.7 Avg MPG

• Porsche

  2008 Porsche Boxster S 3.4L H6 GAS Standard 6 Speed Convertible
  Added Oct 2017 • 283 Fuel-ups

  Property of QGrav42

• 16.3 Avg MPG

• My Boxster

  2008 Porsche Boxster S 3.4L H6 GAS Automatic 5 Speed
  Added Aug 2017 • 26 Fuel-ups

  Property of svyper

• 19.3 Avg MPG

• Lisa's Spyder

  2008 Porsche Boxster RS 60 Spyder 3.4L H6 GAS Manual 6 Speed Convertible
  Added Sep 2020 • 11 Fuel-ups

  Property of tylerdurden2112

• 23.7 Avg MPG

• 2008 Boxster

  2008 Porsche Boxster 2.7L H6 GAS Automatic 5 Speed
  Added May 2017 • 87 Fuel-ups

  Property of easy_e

• 26.1 Avg MPG

• 2008 Boxster S

  2008 Porsche Boxster S 3.4L H6 GAS Standard 6 Speed Convertible
  Added Jun 2018 • 132 Fuel-ups

  Property of bryan-cars

• 18.5 Avg MPG

• Porsche 987 Boxster S 3.4

  2008 Porsche Boxster S 3.4L H6 GAS Manual 6 Speed
  Added Feb 2020 • 5 Fuel-ups

  Property of stevepcom

• 21.7 Avg MPG

• Porsche

  2008 Porsche Boxster S 3.4L H6 GAS Standard 6 Speed
  Added Apr 2017 • 19 Fuel-ups

  Property of arkina4

• 21.4 Avg MPG

• 2008 Porsche Boxster

  2008 Porsche Boxster 2.7L H6 GAS Manual 6 Speed Convertible
  Added Nov 2019 • 7 Fuel-ups

  Property of TBuddenbohn

• 16.1 Avg MPG

• The General Lee

  2008 Porsche Boxster
  Added Jan 2014 • 92 Fuel-ups

  Property of wrxskier

• 18.0 Avg MPG

• Porsche

  2008 Porsche Boxster 2.7L H6 GAS Standard 5 Speed
  Added Apr 2018 • 159 Fuel-ups

  Property of porscheboxster

• 23.2 Avg MPG

• Boxster 08

  2008 Porsche Boxster 2.7L H6 GAS Manual 5 Speed Convertible
  Added Oct 2018 • 8 Fuel-ups

  Property of carljon1968

• 23.3 Avg MPG

• Boxster S

  2008 Porsche Boxster RS 60 Spyder 3.4L H6 GAS Standard 6 Speed
  Added Mar 2018 • 192 Fuel-ups

  Property of Ninenoter

• 21.5 Avg MPG

• RS 60 Spyder

  2008 Porsche Boxster RS 60 Spyder 3.4L H6 GAS Standard 6 Speed
  Added Sep 2016 • 32 Fuel-ups

  Property of THG3

• 19.6 Avg MPG

• My Boxster

  2008 Porsche Boxster S 3.4L H6 GAS Standard 6 Speed
  Added Jun 2018 • 7 Fuel-ups

  Property of IamtheGTIguy

• 16.4 Avg MPG

• Boxster S

  2008 Porsche Boxster GAS H6
  Added Jan 2011 • 4 Fuel-ups

  Property of DerekStuts

• 17.3 Avg MPG

• The Boxster

  2008 Porsche Boxster GAS H6
  Added Sep 2010 • 6 Fuel-ups

  Property of MD

• 23.9 Avg MPG

• the BOB

  2008 Porsche Boxster GAS H6
  Added Aug 2008 • 44 Fuel-ups

  Property of kjam23

• 23.5 Avg MPG