Top 5 Least Fuel Efficient Cars

This new car list provides you the top 5 Least Fuel Efficient Cars. In the past many consumers were not overly concerned about the fuel efficiency of their vehicle.

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#5

2018 GMC Sierra 2500HD Base 4WD 2-Dr Reg Cab Long V8

  • Average MPG Range 0 MPG
  • Fuel Economy 0 MPG city / 0 MPG highway
  • MSRP Range $34,540 - $58,945
  • Value Rating N/A
  • Engine 6.0L V8
  • Bodystyles Truck
#4

2018 GMC Sierra 2500HD Base RWD 4-Dr Ext Cab Long V8

  • Average MPG Range 0 MPG
  • Fuel Economy 0 MPG city / 0 MPG highway
  • MSRP Range $34,540 - $58,945
  • Value Rating N/A
  • Engine 6.0L V8
  • Bodystyles Truck
#3

2018 GMC Sierra 2500HD Base 4WD 4-Dr Ext Cab Long V8

  • Average MPG Range 0 MPG
  • Fuel Economy 0 MPG city / 0 MPG highway
  • MSRP Range $34,540 - $58,945
  • Value Rating N/A
  • Engine 6.0L V8
  • Bodystyles Truck
#2

2018 GMC Sierra 2500HD Base RWD 4-Dr Crew Cab Long V8

  • Average MPG Range 0 MPG
  • Fuel Economy 0 MPG city / 0 MPG highway
  • MSRP Range $34,540 - $58,945
  • Value Rating N/A
  • Engine 6.0L V8
  • Bodystyles Truck
#1

2018 GMC Sierra 2500HD Base 4WD 4-Dr Crew Cab Long V8

  • Average MPG Range 0 MPG
  • Fuel Economy 0 MPG city / 0 MPG highway
  • MSRP Range $34,540 - $58,945
  • Value Rating N/A
  • Engine 6.0L V8
  • Bodystyles Truck