Based on data from 38 vehicles, 1,961 fuel-ups and 448,604 miles of driving, the 1999 Porsche 911 gets a combined Avg MPG of 18.91 with a 0.19 MPG margin of error.

Any Engine Type 3.4L H6 GAS (34) H6 GAS (1) L6 GAS (1) Any Body Style Coupe (10) Any Submodel Carrera 4 (6) Carrera (29) Other (3)

Below you can see a distribution of the fuel-ups with 59 outliers (2.92%) removed.

Following shows the average MPG of each of the 38 vehicles in the system.

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• 996 Carrera

  1999 Porsche 911 Carrera 3.4L H6 GAS Manual 6 Speed
  Added Dec 2021 • 4 Fuel-ups

  Property of legalhexadecimal

• 20.9 Avg MPG

• 996 C2

  1999 Porsche 911 Carrera 3.4L H6 GAS Manual 6 Speed Coupe
  Added Sep 2021 • 5 Fuel-ups

  Property of garyh12

• 21.4 Avg MPG

• My 911

  1999 Porsche 911 Carrera 3.4L H6 GAS Manual 6 Speed
  Added May 2021 • 19 Fuel-ups

  Property of edvaizey

• 18.8 Avg MPG

• Überbug

  1999 Porsche 911 Carrera 3.4L H6 GAS
  Added Sep 2015 • 40 Fuel-ups

  Property of ohlins8990

• 19.0 Avg MPG

• 996

  1999 Porsche 911 Carrera 3.4L H6 GAS Manual 6 Speed Coupe
  Added Feb 2015 • 79 Fuel-ups

  Property of FlatPower

• 21.8 Avg MPG

• My 911

  1999 Porsche 911 Carrera 3.4L H6 GAS Automatic 5 Speed
  Added Nov 2019 • 6 Fuel-ups

  Property of Jordanelliott

• 17.2 Avg MPG

• Porsche 996

  1999 Porsche 911 Carrera 3.4L H6 GAS Standard 6 Speed
  Added Sep 2016 • 44 Fuel-ups

  Property of RobMac

• 16.8 Avg MPG

• 911

  1999 Porsche 911 Carrera 3.4L H6 GAS Manual 6 Speed
  Added Jul 2019 • 7 Fuel-ups

  Property of wrxsti87

• 21.3 Avg MPG

• 1999 Porsche 911 C2

  1999 Porsche 911 Carrera 3.4L H6 GAS Standard 6 Speed Coupe
  Added May 2018 • 28 Fuel-ups

  Property of enigma

• 22.0 Avg MPG

• My 911

  1999 Porsche 911 Carrera 4 3.4L H6 GAS Manual 6 Speed
  Added Apr 2019 • 4 Fuel-ups

  Property of subiechic

• 18.3 Avg MPG

• Po'boy

  1999 Porsche 911 Carrera 3.4L H6 GAS Standard 6 Speed Coupe
  Added Jun 2017 • 57 Fuel-ups

  Property of ChrisTenrten

• 21.2 Avg MPG

• Porsche

  1999 Porsche 911 Cabriolet
  Added Mar 2017 • 152 Fuel-ups

  Property of BriarReed

• 22.3 Avg MPG

• Lee Quave

  1999 Porsche 911 Carrera 3.4L H6 GAS Standard 6 Speed
  Added Apr 2022 • 166 Fuel-ups

  Property of rleeq

• 21.7 Avg MPG

• Black Beauty

  1999 Porsche 911 Carrera 3.4L H6 GAS Standard 6 Speed Coupe
  Added Mar 2015 • 66 Fuel-ups

  Property of Rex1585

• 21.5 Avg MPG

• Sally

  1999 Porsche 911 Carrera 4 3.4L GAS H6 Standard 6 Coupe (2 Door)
  Added Jun 2014 • 37 Fuel-ups

  Property of jwhat

• 22.8 Avg MPG

• Porsche

  1999 Porsche 911 GAS L6
  Added Sep 2011 • 14 Fuel-ups

  Property of pchatter

• 21.4 Avg MPG

• Porsche

  1999 Porsche 911 Carrera
  Added Jan 2014 • 4 Fuel-ups

  Property of xtr1283

• 19.0 Avg MPG

• 911

  1999 Porsche 911 GAS H6
  Added Jun 2009 • 3 Fuel-ups

  Property of FnJ

• 19.7 Avg MPG

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