Smart
ForTwo Coupe / Cabriolet

The Smart seats 2.

City Fuel Economy (MPG): 33 MPG

Highway Fuel Economy (MPG): 41 MPG

Estimated Annual Fuel Cost: $1,487

The most energy-efficient vehicles, ranked by ACEEE Green Score, which accounts for fuel use and emissions: 53

Toyota
Prius

The Prius seats 5.

City Fuel Economy (MPG): 51

Highway Fuel Economy (MPG): 48

Estimated Annual Fuel Cost: $1,121

The most energy-efficient vehicles, ranked by ACEEE Green Score, which accounts for fuel use and emissions: 52

Honda
Civic Hybrid

The Civic Hybrid seats 5.

City Fuel Economy (MPG): 40 MPG

Highway Fuel Economy (MPG): 43 mpg

Estimated Annual Fuel Cost: $1,320

The most energy-efficient vehicles, ranked by ACEEE Green Score, which accounts for fuel use and emissions: 51

Honda
Insight

The Insight seats 5.

City Fuel Economy (MPG): 40 mpg

Highway Fuel Economy (MPG): 43 mpg

Estimated Annual Fuel Cost: $1,330

The most energy-efficient vehicles, ranked by ACEEE Green Score, which accounts for fuel use and emissions: 50

Ford
Fiesta SFE

The Fiesta seats 5.

City Fuel Economy (MPG): 29 mpg

Highway Fuel Economy (MPG): 40 mpg

Estimated Annual Fuel Cost: $1,601

The most energy-efficient vehicles, ranked by ACEEE Green Score, which accounts for fuel use and emissions: 50

Chevrolet
Cruze Eco

The Cruze seats 5.

City Fuel Economy (MPG): 28 mpg

Highway Fuel Economy (MPG): 42 mpg

Estimated Annual Fuel Cost: $1,599

The most energy-efficient vehicles, ranked by ACEEE Green Score, which accounts for fuel use and emissions: 49

Hyundai
Elantra

The Elantra seats 5.

City Fuel Economy (MPG): 29 mpg

Highway Fuel Economy (MPG): 40 mpg

Estimated Annual Fuel Cost: $1,605

The most energy-efficient vehicles, ranked by ACEEE Green Score, which accounts for fuel use and emissions: 49

Mini
Cooper

The Cooper seats 5.

City Fuel Economy (MPG): 29 mpg

Highway Fuel Economy (MPG): 37 mpg

Estimated Annual Fuel Cost: $1,657

The most energy-efficient vehicles, ranked by ACEEE Green Score, which accounts for fuel use and emissions: 49

Toyota
Yaris

The Yaris seats 5.

City Fuel Economy (MPG): 29 mpg

Highway Fuel Economy (MPG): 36 mpg

Estimated Annual Fuel Cost: $1,702

The most energy-efficient vehicles, ranked by ACEEE Green Score, which accounts for fuel use and emissions: 49

Mazda
2

The Mazda 2 seats 5.

City Fuel Economy (MPG): 29 mpg

Highway Fuel Economy (MPG): 35 mpg

Estimated Annual Fuel Cost: $1,709

The most energy-efficient vehicles, ranked by ACEEE Green Score, which accounts for fuel use and emissions: 48