Based on data from 20 vehicles, 894 fuel-ups and 238,685 miles of driving, the 1999 Pontiac Bonneville gets a combined Avg MPG of 19.93 with a 0.31 MPG margin of error.

Any Engine Type 3.8L V6 GAS (14) V6 GAS (6) Any Body Style Sedan (6) Any Submodel SSE (3) SSEi (3) SE (8) Other (6)

Below you can see a distribution of the fuel-ups with 32 outliers (3.46%) removed.

Following shows the average MPG of each of the 20 vehicles in the system.

• Bonny

  1999 Pontiac Bonneville SSEi 3.8L V6 GAS Automatic 4 Speed Sedan
  Added Jul 2022 • 11 Fuel-ups

  Property of egladman

• 17.3 Avg MPG

• My Bonneville

  1999 Pontiac Bonneville SSEi 3.8L V6 GAS Automatic 4 Speed
  Added Dec 2022 • 9 Fuel-ups

  Property of jchiano

• 23.7 Avg MPG

• Buffy (Pontiac)

  1999 Pontiac Bonneville SE 3.8L V6 GAS Automatic 4 Speed
  Added Apr 2017 • 132 Fuel-ups

  Property of Calion

• 18.4 Avg MPG

• Junebug

  1999 Pontiac Bonneville SSE 3.8L V6 GAS Automatic 4 Speed Sedan
  Added Apr 2018 • 173 Fuel-ups

  Property of wropp1

• 22.8 Avg MPG

• The Cloud

  1999 Pontiac Bonneville SE 3.8L V6 GAS Automatic 4 Speed
  Added Sep 2018 • 23 Fuel-ups

  Property of petemcw

• 19.4 Avg MPG

• My Bonneville

  1999 Pontiac Bonneville SE 3.8L V6 GAS Automatic 4 Speed
  Added Jun 2018 • 3 Fuel-ups

  Property of McCabes

• 64.5 Avg MPG

• Coopers bitchen ribe

  1999 Pontiac Bonneville SE 3.8L V6 GAS Automatic 4 Speed Sedan
  Added Oct 2017 • 35 Fuel-ups

  Property of Cooper5248

• 18.6 Avg MPG

• Honkey

  1999 Pontiac Bonneville SE 3.8L V6 GAS Automatic 4 Speed Sedan
  Added Dec 2017 • 50 Fuel-ups

  Property of BrutalRising

• 24.5 Avg MPG

• Car

  1999 Pontiac Bonneville SE 3.8L V6 GAS Automatic 4 Speed Sedan
  Added Jun 2020 • 144 Fuel-ups

  Property of d3ooo

• 23.7 Avg MPG

• Me

  1999 Pontiac Bonneville SSE 3.8L V6 GAS Automatic 4 Speed
  Added Apr 2017 • 51 Fuel-ups

  Property of jofay

• 21.8 Avg MPG

• Bonneville

  1999 Pontiac Bonneville SE 3.8L V6 GAS Automatic 4 Speed
  Added Mar 2017 • 176 Fuel-ups

  Property of drewmcmillen

• 17.6 Avg MPG

• Pontiac Bonneville

  1999 Pontiac Bonneville SSE 3.8L V6 GAS Automatic 4 Speed Sedan
  Added Jul 2018 • 14 Fuel-ups

  Property of schanie

• 22.2 Avg MPG

• Pontiac

  1999 Pontiac Bonneville SSEi 3.8L V6 GAS Automatic 4 Speed
  Added Sep 2016 • 75 Fuel-ups

  Property of vulcan1990

• 19.9 Avg MPG

• 99 SC Bonnie

  1999 Pontiac Bonneville GAS V6
  Added May 2011 • 103 Fuel-ups

  Property of dangrus4060

• 18.6 Avg MPG

• Bonnie

  1999 Pontiac Bonneville GAS V6
  Added Feb 2011 • 29 Fuel-ups

  Property of tobinko

• 18.0 Avg MPG

• Bonneville

  1999 Pontiac Bonneville GAS V6
  Added Apr 2013 • 36 Fuel-ups

  Property of BenB

• 21.8 Avg MPG

• Green Machine

  1999 Pontiac Bonneville GAS V6
  Added Mar 2011 • 64 Fuel-ups

  Property of BING97

• 21.4 Avg MPG

• Bonnie

  1999 Pontiac Bonneville GAS V6
  Added Nov 2012 • 7 Fuel-ups

  Property of sabar3

• 27.6 Avg MPG

• Pontiac Bonneville

  1999 Pontiac Bonneville SE 3.8L V6 GAS Automatic 4 Speed
  Added Apr 2017 • 24 Fuel-ups

  Property of korn0055

• 21.3 Avg MPG

• Bonny

  1999 Pontiac Bonneville GAS V6
  Added Aug 2008 • 9 Fuel-ups

  Property of cdclinesmith

• 17.5 Avg MPG