Based on data from 18 vehicles, 761 fuel-ups and 189,305 miles of driving, the 2009 Porsche Cayman gets a combined Avg MPG of 20.39 with a 0.31 MPG margin of error.

Any Engine Type 2.9L H6 GAS (10) 3.4L H6 GAS (7) H6 GAS (1) Any Body Style Hatchback (5) Coupe (3) Any Submodel S (7) Base (10) Other (1)

Below you can see a distribution of the fuel-ups with 129 outliers (14.49%) removed.

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

• Cayman

  2009 Porsche Cayman 2.9L H6 GAS Automatic Dual Clutch 7 Speed
  Added Aug 2023 • 54 Fuel-ups

  Property of tjmouse

• 22.4 Avg MPG

• Cayman

  2009 Porsche Cayman S 3.4L H6 GAS Manual 6 Speed Hatchback
  Added Sep 2018 • 147 Fuel-ups

  Property of c4ara

• 20.3 Avg MPG

• Bathilde

  2009 Porsche Cayman S 3.4L H6 GAS Automatic Dual Clutch 7 Speed
  Added Jun 2012 • 147 Fuel-ups

  Property of ewente

• 21.1 Avg MPG

• Porsche Cayman

  2009 Porsche Cayman S 3.4L H6 GAS Automatic Dual Clutch 7 Speed
  Added Nov 2021 • 105 Fuel-ups

  Property of vwnumber3

• 21.4 Avg MPG

• Cayman Track Car

  2009 Porsche Cayman 2.9L H6 GAS Manual 6 Speed
  Added Nov 2021 • 63 Fuel-ups

  Property of wago

• 15.7 Avg MPG

• My Cayman

  2009 Porsche Cayman S 3.4L H6 GAS Automatic Dual Clutch 7 Speed
  Added Mar 2022 • 37 Fuel-ups

  Property of oaky8

• 21.1 Avg MPG

• Cayman S 6spd

  2009 Porsche Cayman S 3.4L H6 GAS Manual 6 Speed Coupe
  Added Feb 2014 • 112 Fuel-ups

  Property of jkMCA

• 17.5 Avg MPG

• Cayman

  2009 Porsche Cayman 2.9L H6 GAS Manual 6 Speed Coupe
  Added Nov 2020 • 24 Fuel-ups

  Property of RONE

• 19.5 Avg MPG

• Cayman

  2009 Porsche Cayman 2.9L H6 GAS Automatic Dual Clutch 7 Speed Hatchback
  Added Feb 2022 • 3 Fuel-ups

  Property of shiggins

• 20.9 Avg MPG

• My Cayman

  2009 Porsche Cayman 2.9L H6 GAS Automatic Dual Clutch 7 Speed
  Added Jul 2018 • 120 Fuel-ups

  Property of waynelau

• 4.2 Avg MPG

• Silver Minnow

  2009 Porsche Cayman 2.9L H6 GAS Manual 6 Speed Hatchback
  Added Feb 2018 • 31 Fuel-ups

  Property of Lando

• 21.8 Avg MPG

• Banshee

  2009 Porsche Cayman S 3.4L H6 GAS Automatic Dual Clutch 7 Speed
  Added Sep 2017 • 20 Fuel-ups

  Property of LaunchMini

• 19.9 Avg MPG

• Cayman S

  2009 Porsche Cayman S 3.4L H6 GAS Standard 6 Speed Hatchback
  Added Aug 2017 • 5 Fuel-ups

  Property of willandcynthia

• 19.4 Avg MPG

• Cayman

  2009 Porsche Cayman 2.9L H6 GAS Automatic Dual Clutch 7 Speed Hatchback
  Added Mar 2016 • 3 Fuel-ups

  Property of jamessng87

• 26.9 Avg MPG

• Barry Allen

  2009 Porsche Cayman 2.9L H6 GAS Standard 6 Speed Coupe
  Added Sep 2015 • 7 Fuel-ups

  Property of klumsy_tumbler

• 24.5 Avg MPG

• Mat's Porsche

  2009 Porsche Cayman 2.9L GAS H6 Standard 6 Hatchback (2 Door)
  Added Sep 2014 • 18 Fuel-ups

  Property of boat0017

• 24.5 Avg MPG

• Porsche Cayman

  2009 Porsche Cayman 2.9L H6 GAS Standard 6 Speed
  Added Nov 2016 • 67 Fuel-ups

  Property of shughes863

• 21.6 Avg MPG

• Cayman

  2009 Porsche Cayman GAS H6
  Added Mar 2013 • 10 Fuel-ups

  Property of mrphil

• 15.1 Avg MPG