The 100 Least Fuel-Efficient Cars of All Time

Have you ever wondered just which cars are the least fuel efficient? In this article, we'll give you the 100 worst fuel efficient cars of all time, 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 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
1990 Lamborghini Countach 7 $10,550
1989 Lamborghini Countach 7 $10,550
1988 Lamborghini Countach 7 $10,550
1987 Lamborghini Countach 7 $10,550
1986 Lamborghini Countach 7 $10,550
2003 Ferrari Enzo Ferrari 8 $9,250
1995 Ferrari Ferrari F50 8 $9,250
1993 Vector W8 8 $9,250
1992 Vector W8 8 $9,250
1987 Rolls-Royce Camargue 8 $7,800
1987 Rolls-Royce Continental 8 $7,800
1987 Rolls-Royce Corniche II 8 $7,800
1987 Rolls-Royce Eight/Mulsan 8 $7,800
1987 Rolls-Royce Silver Spirit/Silver Spur 8 $7,800
1987 Rolls-Royce Silver Spur Limousine 8 $7,800
1986 Maserati Quattroporte 8 $7,800
1986 Rolls-Royce Camargue 8 $7,800
1986 Rolls-Royce Corniche II/Continental 8 $7,800
1986 Rolls-Royce Silver Spur Limousine 8 $7,800
1985 Aston Martin Lagonda 8 $7,800
1985 Aston Martin Saloon/Vantage/Volante 8 $7,800
1985 Aston Martin Saloon/Vantage/Volante 8 $7,800
1985 Maserati Quattroporte 8 $7,800
1985 Rolls-Royce Camargue 8 $7,800
1985 Rolls-Royce Corniche/Continental 8 $7,800
1985 Rolls-Royce Silver Spur Limousine 8 $7,800
1984 Aston Martin Saloon/vantage/volante 8 $7,800
1984 Maserati Quattroporte 8 $7,800
1984 Rolls-Royce Camargue 8 $7,800
1984 Rolls-Royce Corniche 8 $7,800
1984 Rolls-Royce Silver Spur Limousine 8 $7,800
2022 Bugatti Chiron Pur Sport 9 $8,200
2022 Bugatti Chiron Super Sport 9 $8,200
2006 Dodge Ram 1500 Pickup 2WD 9 $8,200
2005 Chevrolet Silverado 2500 HD 2WD CNG 9 $3,900
2005 Chevrolet Silverado 2500 HD 4WD CNG 9 $3,900
2005 Dodge Ram 1500 Pickup 2WD 9 $8,200
2005 GMC Sierra 2500 HD 2WD CNG 9 $3,900
2005 GMC Sierra 2500 HD 4WD CNG 9 $3,900
2001 Ferrari 550 Maranello/Barchetta 9 $8,200
2000 Ferrari 550 Maranello 9 $8,200
1997 Vector Avtech SC / M12 9 $8,200
1996 Vector Avtech SC / M12 9 $8,200
1990 Chevrolet C1500 Pickup 2WD 9 $6,950
1989 Aston Martin Lagonda 9 $6,950
1989 Aston Martin Saloon/Vantage/Volante 9 $6,950
1989 Aston Martin Saloon/Vantage/Volante 9 $6,950
1988 Aston Martin Lagonda 9 $6,950
1988 Aston Martin Saloon/Vantage/Volante 9 $6,950
1988 Aston Martin Saloon/Vantage/Volante 9 $6,950
1988 Dodge AW100/AW150 Ramcharger 4WD 9 $6,950
1988 Dodge W100/W150 Pickup 4WD 9 $6,950
1988 Dodge W250 Pickup 4WD 9 $6,950
1988 Rolls-Royce Continental 9 $6,950
1988 Rolls-Royce Corniche II 9 $6,950
1988 Rolls-Royce Eight/Mulsan 9 $6,950
1988 Rolls-Royce Silver Spirit/Silver Spur 9 $6,950
1988 Rolls-Royce Silver Spur Limousine 9 $6,950
1987 Aston Martin Lagonda 9 $6,950
1987 Aston Martin Saloon/Vantage/Volante 9 $6,950
1987 Aston Martin Saloon/Vantage/Volante 9 $6,950
1987 Dodge AW100/AW150 Ramcharger 4WD 9 $6,950
1987 Dodge W250 Pickup 4WD 9 $6,950
1987 Rolls-Royce Continental 9 $6,950
1987 Rolls-Royce Corniche II 9 $6,950
1987 Rolls-Royce Eight/Mulsan 9 $6,950
1987 Rolls-Royce Silver Spirit/Silver Spur 9 $6,950
1987 Rolls-Royce Silver Spur Limousine 9 $6,950
1986 Rolls-Royce Silver Spirit/Spur/Mulsanne 9 $6,950
1985 Rolls-Royce Silver Spirit/Spur/Mulsanne 9 $6,950
1984 Aston Martin Lagonda 9 $6,950
1984 Aston Martin Saloon/vantage/volante 9 $6,950
1984 Cadillac Limousine 9 $6,950
1984 Dodge B350 Wagon 2WD 9 $6,950
1984 Ford E150 Club Wagon 2WD 9 $6,950
1984 Ford E250 Econoline 2WD 9 $6,950
1984 Rolls-Royce Silver Spirit/Spur/Mulsanne 9 $6,950
2021 Bugatti Chiron Pur Sport 10 $7,400
2021 Lamborghini Aventador Coupe 10 $7,400
2021 Lamborghini Aventador Roadster 10 $7,400
2021 Lamborghini Aventador Sian Coupe 10 $7,400
2021 Lamborghini Aventador Sian Roadster 10 $7,400
2020 Bugatti Divo 10 $7,400
2020 Lamborghini Aventador Sian Coupe 10 $7,400
2020 Lamborghini Aventador Sian Roadster 10 $7,400
2015 Bugatti Veyron 10 $7,400
2014 Bugatti Veyron 10 $7,400
2013 Bugatti Veyron 10 $7,400
2012 Bugatti Veyron 10 $7,400
2011 Bugatti Veyron 10 $7,400
2010 Bugatti Veyron 10 $7,400
2010 Lamborghini Murcielago 10 $7,400
2010 Lamborghini Murcielago Roadster 10 $7,400
2009 Lamborghini Murcielago 10 $7,400
2009 Lamborghini Murcielago Roadster 10 $7,400
2008 Bugatti Veyron 10 $7,400
2008 Lamborghini Murcielago 10 $7,400
2008 Lamborghini Murcielago Roadster 10 $7,400
2007 Lamborghini L-147/148 Murcielago 10 $7,400
2006 Bugatti Veyron 10 $7,400

Conclusion

The least fuel efficient car of all time is the 1990 Lamborghini Countach. It has a combined MPG of 7 and costs $10,550 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 of All Time". MPG Buddy. Accessed on May 21, 2022. http://mpgbuddy.com/least-fuel-efficient-cars.

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