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2021 Most and Least Efficient Cars

Most Efficient Cars by EPA Size Class
(including electric vehicles)
EPA Class Vehicle Combined
MPG
Two-Seaters
Two-Seaters
Mazda MX-5
2.0 L, 4 cyl, Automatic (S6)
30
Minicompacts
Minicompacts
Polestar 1
2.0 L, 4 cyl, Automatic (S8)
45
Subcompacts
Subcompacts
BMW i3
A-1, 125 kW AC Induction
113
BMW i3s
A-1, 135 kW AC Induction
113
Compacts
Compacts
Kandi K27
A-1, 20 kW AC Induction
114
Midsize
Midsize 142
Large
Large
Tesla Model S Long Range
A-1, 179 and 186 kW AC AC Induction
120
Small Station Wagons
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
Mazda MX-5
2.0 L, 4 cyl, Automatic (S6)
30
Minicompacts
Minicompacts
MINI Cooper Convertible
1.5 L, 3 cyl, Automatic (AM-S7), 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 (AM-S6)
59
Small Station Wagons
Small Station Wagons
Kia Niro FE
1.6 L, 4 cyl, Automatic (AM-S6)
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
EPA Class Vehicle Combined
MPG
Two-Seaters
Two-Seaters
Bugatti Chiron Pur Sport
8.0 L, 16 cyl, Automatic (AM-S7), Turbo
10
Lamborghini Aventador Coupe
6.5 L, 12 cyl, Automatic (AM-S7)
10
Lamborghini Aventador Roadster
6.5 L, 12 cyl, Automatic (AM-S7)
10
Minicompacts
Minicompacts
Bentley Continental GT Convertible
6.0 L, 12 cyl, Automatic (AM-S8), Turbo
15
Subcompacts
Subcompacts
Bentley Continental GT
6.0 L, 12 cyl, Automatic (AM-S8), Turbo
15
Compacts
Compacts
Rolls-Royce Dawn
6.6 L, 12 cyl, Automatic (S8), Turbo
14
Rolls-Royce Dawn Black Badge
6.6 L, 12 cyl, Automatic (S8), Turbo
14
Midsize
Midsize
Rolls-Royce Wraith
6.6 L, 12 cyl, Automatic (S8), Turbo
14
Rolls-Royce Wraith Black Badge
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
Mercedes-Benz AMG GLA45 4matic
2.0 L, 4 cyl, Automatic (AM8), 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

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