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2020 Most and Least Efficient Cars

Most Efficient Cars by EPA Size Class
(including electric vehicles)
EPA Class Vehicle Combined
MPG
Two-Seaters
Two-Seaters
BMW I8 Roadster
1.5 L, 3 cyl, Automatic 6-spd, Turbo
36
Minicompacts
Minicompacts
MINI Cooper Convertible
1.5 L, 3 cyl, Automatic (AM-S7), Turbo
31
Subcompacts
Subcompacts
Karma Revero GT (21-inch wheels)
1.5 L, 3 cyl, Automatic (A1), Turbo
52
Compacts
Compacts
Volkswagen e-Golf
A-1, 100 kW AC PMSM
113
Midsize
Midsize 141
Large
Large
Tesla Model S Long Range
A-1, 193 and 205 kW AC 3-Phase AC Induction
111
Small Station Wagons
Chevrolet Bolt EV
A-1, 150 kW ACPM
118
Midsize Station Wagons
Midsize Station Wagons
Volvo V90 FWD
2.0 L, 4 cyl, Automatic (S8), Turbo
26
Most Efficient Cars by EPA Size Class
(excluding electric vehicles)
EPA Class Vehicle Combined
MPG
Two-Seaters
Two-Seaters
Fiat 124 Spider
1.4 L, 4 cyl, Manual 6-spd, Turbo
30
Mazda MX-5
2.0 L, 4 cyl, Automatic (S6)
30
Minicompacts
Minicompacts
MINI Cooper Convertible
1.5 L, 3 cyl, Manual 6-spd, Turbo
31
Subcompacts
Subcompacts
Chevrolet Spark
1.4 L, 4 cyl, Automatic (variable gear ratios)
33
Chevrolet Spark
1.4 L, 4 cyl, Manual 5-spd
33
Chevrolet Spark ACTIV
1.4 L, 4 cyl, Automatic (variable gear ratios)
33
Compacts
Compacts
Toyota Corolla Hybrid
1.8 L, 4 cyl, Automatic (variable gear ratios)
52
Midsize
Midsize
Toyota Prius Eco
1.8 L, 4 cyl, Automatic (variable gear ratios)
56
Large
Large
Hyundai Ioniq Blue
1.6 L, 4 cyl, Automatic (AM6)
58
Small Station Wagons
Small Station Wagons
Kia Niro FE
1.6 L, 4 cyl, Automatic (AM6)
50
Midsize Station Wagons
Midsize Station Wagons
Volvo V90 FWD
2.0 L, 4 cyl, Automatic (S8), Turbo
26
Least Efficient Cars by EPA Size Class
(excluding electric vehicles)
EPA Class Vehicle Combined
MPG
Two-Seaters
Two-Seaters
Bugatti Chiron
8.0 L, 16 cyl, Automatic (AM-S7), Turbo
11
Lamborghini Aventador Coupe
6.5 L, 12 cyl, Automatic (AM-S7)
11
Lamborghini Aventador Roadster
6.5 L, 12 cyl, Automatic (AM-S7)
11
Minicompacts
Minicompacts
Ferrari GTC4Lusso
6.3 L, 12 cyl, Auto(AM7)
13
Subcompacts
Subcompacts
Ford Shelby GT500 Mustang
5.2 L, 8 cyl, Automatic (AM7), Supercharger
14
Roush Performance Stage 3 Mustang
5.0 L, 8 cyl, Automatic (S10), Supercharger
14
Compacts
Compacts
Rolls-Royce Dawn
6.6 L, 12 cyl, Automatic (S8), Turbo
14
Midsize
Midsize
Rolls-Royce Wraith
6.6 L, 12 cyl, Automatic (S8), Turbo
14
Large
Large
Rolls-Royce Ghost
6.6 L, 12 cyl, Automatic (S8)
14
Rolls-Royce Ghost EWB
6.6 L, 12 cyl, Automatic (S8)
14
Rolls-Royce Phantom
6.7 L, 12 cyl, Automatic (S8)
14
Rolls-Royce Phantom EWB
6.7 L, 12 cyl, Automatic (S8)
14
Small Station Wagons
Small Station Wagons
Volkswagen Arteon 4motion
2.0 L, 4 cyl, Automatic (S8), Turbo
23
Midsize Station Wagons
Midsize Station Wagons
Rolls-Royce Cullinan
6.7 L, 12 cyl, Automatic (S8), Turbo
14
Rolls-Royce Cullinan Black Badge
6.7 L, 12 cyl, Automatic (S8), Turbo
14