fueleconomy.gov/m

X 2012 Porsche 911 Speedster

3.8 L, 6 cyl, Auto 7-spd, Premium Gasoline

2012 Porsche 911 Speedster

EPA Fuel Economy

Combined: 21 MPG

City: 19 MPG

Highway: 27 MPG

Tailpipe CO2

423 grams per mile

Additional CO2 emissions result from production, manufacture, and transportation of the fuel.

Click to show total emissions

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X 1999 Rolls-Royce Silver Spur

6.8 L, 8 cyl, Auto 4-spd, Premium Gasoline

1999 Rolls-Royce Silver Spur

EPA Fuel Economy

Combined: 12 MPG

City: 10 MPG

Highway: 15 MPG

Tailpipe CO2

741 grams per mile

Additional CO2 emissions result from production, manufacture, and transportation of the fuel.

Click to show total emissions

Learn More

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