The 100 Least Fuel-Efficient Cars in 2005

Have you ever wondered what the least fuel efficient cars manufactured in 2005 are? In this article, we'll list out the worst 100 cars from 2005 for fuel efficiency with information on each of them!

How to Determine Fuel Efficiency

The list of the best fuel efficient cars on this page is based on one simple metric provided to us by the U.S. Department of Energy: the combined miles per gallon (MPG).

This metric is calculated by taking the total miles driven by the car and dividing it by the total gallons of fuel used.

Manufacturers provide this information to the Department of Energy, they provide it to us, and we provide it to you after sifting and organizing it.

The combined miles per gallon (MPG) is a measure of how much fuel the car uses per mile and is a good indicator of how efficient the car is. It's a combination of both city and highway driving, to give you a more overall accurate MPG.

With that out of the way, let's dive into the list. You can click the links in the table below to see more detailed information about each car.

Worst 2005 Cars by Miles per Gallon

The list below is sorted by the combined miles per gallon (MPG) of the car, with the highest MPG at the top. This list includes both electric and regular fuel cars.

Car Combined MPG Fuel Cost
Chevrolet Silverado 2500 HD 2WD CNG 9 $3,900
Chevrolet Silverado 2500 HD 4WD CNG 9 $3,900
Dodge Ram 1500 Pickup 2WD 9 $8,200
GMC Sierra 2500 HD 2WD CNG 9 $3,900
GMC Sierra 2500 HD 4WD CNG 9 $3,900
Dodge Ram 1500 Pickup 2WD 10 $7,400
Lamborghini L-140/141 Gallardo 10 $7,400
Lamborghini L-147/148 Murcielago 10 $7,400
Bentley Arnage 11 $6,700
Bentley Arnage LWB 11 $6,700
Chevrolet Silverado 2500 HD 2WD 11 $5,700
Ferrari 360 Modena/Spider/Challenge 11 $6,700
Ferrari 360 Modena/Spider/Challenge 11 $6,700
Ferrari 575 M Maranello and Superam... 11 $6,700
Ferrari 575 M Maranello and Superam... 11 $6,700
Ferrari 612 Scaglietti 11 $6,700
GMC Sierra 2500 Hd 2WD 11 $5,700
Lamborghini L-140/141 Gallardo 11 $6,700
Lamborghini L-147/148 Murcielago 11 $6,700
Porsche Carrera GT 11 $6,700
Aston Martin DB9 Coupe Manual 12 $6,150
Aston Martin DB9 Volante Manual 12 $6,150
Aston Martin V12 Vanquish S 12 $6,150
Bentley Continental GT 12 $6,150
Dodge Ram 1500 Pickup 2WD 12 $5,200
Dodge Ram 1500 Pickup 4WD 12 $5,200
Ferrari 612 Scaglietti 12 $6,150
Ferrari F430 12 $6,150
Ferrari F430 12 $6,150
Land Rover Range Rover 12 $6,150
Maserati Coupe and Gransport 12 $6,150
Maserati Coupe and Gransport 12 $6,150
Maserati Quattroporte 12 $6,150
Maserati Spyder Cambiocorsa/GT/90 ANV 12 $6,150
Maserati Spyder Cambiocorsa/GT/90 ANV 12 $6,150
Mercedes-Benz G500 12 $6,150
Mercedes-Benz G55 AMG 12 $6,150
Aston Martin DB9 13 $5,700
Aston Martin DB9 Volante 13 $5,700
Cadillac Escalade AWD 13 $5,700
Cadillac Escalade ESV AWD 13 $5,700
Cadillac Escalade Ext AWD 13 $5,700
Chevrolet Silverado 1500 AWD 13 $4,800
Dodge Ram 1500 Pickup 4WD 13 $4,800
Dodge Viper Convertible 13 $5,700
Ford E150 Club Wagon 13 $4,800
GMC Sierra 1500 AWD 13 $4,800
GMC Yukon 1500 AWD 13 $5,700
GMC Yukon XL 1500 AWD 13 $5,700
Lexus LX 470 13 $4,800
Lincoln Aviator 2WD 13 $5,700
Lincoln Aviator 4WD 13 $5,700
Lincoln Navigator 2WD 13 $5,700
Maybach 57 13 $5,700
Maybach 62 13 $5,700
Mercedes-Benz CL65 AMG 13 $5,700
Mercedes-Benz S600 13 $5,700
Mercedes-Benz SL65 AMG 13 $5,700
Mercedes-Benz SLR 13 $5,700
Rolls-Royce Phantom 13 $5,700
Toyota Land Cruiser Wagon 4WD 13 $4,800
Volkswagen Phaeton 13 $5,700
Cadillac Escalade 2WD 14 $5,300
Chevrolet Astro AWD (cargo) Conversion 14 $4,450
Chevrolet Astro AWD (passenger) 14 $4,450
Chevrolet Avalanche 1500 4WD 14 $4,450
Chevrolet Express 1500 AWD 14 $4,450
Chevrolet Express 1500/2500 2WD 14 $4,450
Chevrolet Silverado 1500 4WD 14 $4,450
Chevrolet SSR Pickup 2WD 14 $5,300
Chevrolet Suburban 1500 4WD 14 $4,450
Chevrolet Suburban 1500 AWD 14 $4,450
Chevrolet Tahoe 1500 4WD 14 $4,450
Chevrolet Tahoe 1500 AWD 14 $4,450
Chevrolet TrailBlazer Ext 4WD 14 $4,450
Chevrolet Van 15/25 2WD Conversion 14 $4,450
Chevrolet Van 15/25 2WD Conversion 14 $4,450
Chevrolet Van 1500 AWD Conversion 14 $4,450
Chevrolet Van 1500/2500 AWD 14 $4,450
Dodge Durango 2WD 14 $4,450
Dodge Durango 4WD 14 $4,450
Dodge Ram 1500 Pickup 2WD 14 $4,450
Dodge Ram 1500 Pickup 2WD 14 $4,450
Dodge Ram 1500 Pickup 4WD 14 $4,450
Dodge Ram 1500 Pickup 4WD 14 $4,450
Ford E150 Econoline 2WD 14 $4,450
Ford Expedition 2WD 14 $4,450
Ford Expedition 4WD 14 $4,450
Ford Explorer 4WD 14 $4,450
Ford F150 Pickup 4WD 14 $4,450
Ford GT 14 $5,300
GMC Envoy XL 4WD 14 $4,450
GMC Envoy XUV 4WD 14 $4,450
GMC Safari AWD (Passenger) 14 $4,450
GMC Safari AWD Conversion (cargo) 14 $4,450
GMC Savana 15/25 2WD Conversion... 14 $4,450
GMC Savana 15/25 AWD Conversion... 14 $4,450
GMC Savana 1500 AWD (Passenger) 14 $4,450
GMC Savana 1500/2500 2WD (Passe... 14 $4,450
GMC Savana 1500/2500 AWD (cargo) 14 $4,450

Conclusion

The least fuel efficient car of 2005 is the Chevrolet Silverado 2500 HD 2WD CNG. It has a combined MPG of 9 and costs $3,900 per year to drive it.

Least Fuel Efficient Cars By Year

If you want to continue researching the worst fuel efficient cars of all time, you can also look at the list of cars by year.

Link To or Reference This Page

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  • "The 100 Least Fuel-Efficient Cars in 2005". MPG Buddy. Accessed on December 9, 2022. http://mpgbuddy.com/least-fuel-efficient-cars-in-2005.

  • "The 100 Least Fuel-Efficient Cars in 2005". MPG Buddy, http://mpgbuddy.com/least-fuel-efficient-cars-in-2005. Accessed 9 December, 2022

  • The 100 Least Fuel-Efficient Cars in 2005. MPG Buddy. Retrieved from http://mpgbuddy.com/least-fuel-efficient-cars-in-2005.