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Fuel Economy of 1999 Porsche Vehicles
EPA MPG  
MODEL City Comb Hwy Fuel Cost
1999 Porsche 911 Carrera 6 cyl, 3.4 L, Automatic 5-spd, Premium Gasoline
1999 Porsche 911 Carrera 15

City

18

Combined

23

Highway

$3350

per year

1999 Porsche 911 Carrera 6 cyl, 3.4 L, Manual 6-spd, Premium Gasoline
1999 Porsche 911 Carrera 15

City

18

Combined

23

Highway

$3350

per year

1999 Porsche 911 Carrera 6 cyl, 3.4 L, Automatic 5-spd, Premium Gasoline
1999 Porsche 911 Carrera 15

City

17

Combined

22

Highway

$3550

per year

1999 Porsche 911 Carrera 6 cyl, 3.4 L, Manual 6-spd, Premium Gasoline
1999 Porsche 911 Carrera 15

City

17

Combined

22

Highway

$3550

per year

1999 Porsche Boxster 6 cyl, 2.5 L, Automatic 5-spd, Premium Gasoline
1999 Porsche Boxster 15

City

17

Combined

22

Highway

$3550

per year

1999 Porsche Boxster 6 cyl, 2.5 L, Manual 5-spd, Premium Gasoline
1999 Porsche Boxster 17

City

20

Combined

24

Highway

$3000

per year

Annual Fuel Costs are based on 45% highway driving, 55% city driving, and 15000 annual miles.

Assumed Fuel Prices:

  • Regular: 3.75
  • Midgrade: 3.90
  • Premium: 4.02
  • Diesel: 4.00
  • CNG: 2.13
  • Electricity: 0.12 per kilowatt hour
  • E85: 3.14
  • LPG: 3.08