Based on data from 19 vehicles, 474 fuel-ups and 120,178 miles of driving, the 2018 Porsche 911 gets a combined Avg MPG of 20.47 with a 0.42 MPG margin of error.

Any Engine Type 3.0L H6 GAS (11) 3.8L H6 GAS (1) 4.0L H6 GAS (7) Any Body Style Coupe (2) Convertible (1) Any Submodel Carrera S (1) Turbo S (1) Carrera 4 GTS (1) Carrera 4S (2) Carrera GTS (2) Carrera T (2) Carrera (3) GT3 (7)

Below you can see a distribution of the fuel-ups with 22 outliers (4.44%) removed.

Following shows the average MPG of each of the 19 vehicles in the system.

• 2018 911 991

  2018 Porsche 911 Carrera 3.0L H6 GAS Manual 7 Speed
  Added Jun 2021 • 10 Fuel-ups

  Property of pjanglin

• 24.0 Avg MPG

• 2018 Porsche Turbo S Cabriolet

  2018 Porsche 911 Turbo S 3.8L H6 GAS Automatic Dual Clutch 7 Speed Convertible
  Added May 2022 • 9 Fuel-ups

  Property of carloabarth

• 18.1 Avg MPG

• Claudia

  2018 Porsche 911 Carrera GTS 3.0L H6 GAS Automatic Dual Clutch 7 Speed
  Added Jul 2019 • 92 Fuel-ups

  Property of ChrisF1

• 19.4 Avg MPG

• My 911

  2018 Porsche 911 Carrera T 3.0L H6 GAS Automatic Dual Clutch 7 Speed
  Added Jan 2021 • 20 Fuel-ups

  Property of jmacie3

• 21.9 Avg MPG

• My 911

  2018 Porsche 911 Carrera 4S 3.0L H6 GAS Automatic Dual Clutch 7 Speed
  Added May 2018 • 37 Fuel-ups

  Property of hdugan

• 18.4 Avg MPG

• Porsche

  2018 Porsche 911 Carrera S 3.0L H6 GAS Automatic Dual Clutch 7 Speed
  Added Jul 2018 • 71 Fuel-ups

  Property of Jetflyer

• 22.5 Avg MPG

• 911 991.2 GT3 Touring

  2018 Porsche 911 GT3 4,0L H6 GAS Manual 7 Speed
  Added Dec 2021 • 4 Fuel-ups

  Property of RichD

• 13.9 Avg MPG

• 991.2 GT3

  2018 Porsche 911 GT3 4.0L H6 GAS Manual 7 Speed
  Added Apr 2019 • 8 Fuel-ups

  Property of bstein

• 18.1 Avg MPG

• Porsche 991

  2018 Porsche 911 Carrera 4S 3.0L H6 GAS Automatic Dual Clutch 7 Speed
  Added Jul 2019 • 61 Fuel-ups

  Property of ibimmer346

• 17.9 Avg MPG

• My 911 Convertible

  2018 Porsche 911 Carrera 3.0L H6 GAS Automatic Dual Clutch 7 Speed
  Added Apr 2021 • 20 Fuel-ups

  Property of albroumand

• 18.5 Avg MPG

• Porsche 991.2 GT3

  2018 Porsche 911 GT3 4,0L H6 GAS Manual 7 Speed
  Added Aug 2020 • 3 Fuel-ups

  Property of RichD

• 19.9 Avg MPG

• My 911

  2018 Porsche 911 Carrera 4 GTS 3.0L H6 GAS Automatic Dual Clutch 7 Speed Coupe
  Added Dec 2018 • 55 Fuel-ups

  Property of DrJanNielsen

• 22.4 Avg MPG

• My 911

  2018 Porsche 911 Carrera 3.0L H6 GAS Automatic Dual Clutch 7 Speed
  Added Jul 2018 • 96 Fuel-ups

  Property of evora

• 23.5 Avg MPG

• GT3 Touring

  2018 Porsche 911 GT3 4.0L H6 GAS Manual 7 Speed
  Added Apr 2019 • 4 Fuel-ups

  Property of vwdrummer

• 17.7 Avg MPG

• My 911

  2018 Porsche 911 Carrera T 3.0L H6 GAS Automatic Dual Clutch 7 Speed
  Added Jun 2018 • 15 Fuel-ups

  Property of moojimmy

• 22.3 Avg MPG

• .2GT3

  2018 Porsche 911 GT3 4.0L H6 GAS Automatic Dual Clutch 7 Speed
  Added Feb 2019 • 35 Fuel-ups

  Property of grimmm

• 18.6 Avg MPG

• Lichtgrün GT3

  2018 Porsche 911 GT3 4.0L H6 GAS Manual 7 Speed
  Added Jul 2019 • 3 Fuel-ups

  Property of Kj71109

• 16.5 Avg MPG

• Carrera GTS

  2018 Porsche 911 Carrera GTS 3.0L H6 GAS Automatic Dual Clutch 7 Speed Coupe
  Added Jul 2018 • 11 Fuel-ups

  Property of SafetyNick

• 22.9 Avg MPG

• Porsche 911 GT3

  2018 Porsche 911 GT3 4,0L H6 GAS Automatic Dual Clutch 7 Speed
  Added Mar 2018 • 4 Fuel-ups

  Property of rsdriver777

• 36.4 Avg MPG