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www.fueleconomy.gov
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Why is Fuel
Economy
Important?
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1988 Vehicles by Porsche

Model
MPG
(city)
MPG
(hwy)
Annual
Fuel
Cost*

Greenhouse Gas
Emissions
(tons/yr)*
Greenhouse gas (GHG) emissions from your car may contribute to climate change. Cars with better gas mileage emit less greenhouse gases. Click for more info.
EPA
Air
Pollution
Score
From 0 to 10 (best)
The EPA air pollution score rates cars and light trucks based on how much smog-forming air pollution they emit. Some vehicles are available in multiple emission versions. Click for more info.
Porsche 911 Carrera
6 cyl, 3.2 L, Manual 5-spd, Premium
16 23
$2099
9.60 NA
Porsche 911 Carrera
6 cyl, 3.2 L, Manual 5-spd, Premium
14 24
$2218
10.20 NA
Porsche 911 Turbo
6 cyl, 3.3 L, Manual 4-spd, Premium
15 20
$2346
10.80 NA
Porsche 924 S
4 cyl, 2.5 L, Automatic 3-spd, Regular
18 22
$1925
9.60 NA
Porsche 924 S
4 cyl, 2.5 L, Manual 5-spd, Regular
18 26
$1742
8.70 NA
Porsche 928 S4
8 cyl, 5.0 L, Automatic 4-spd, Premium
15 20
$2494
11.40 NA
Porsche 928 S4
8 cyl, 5.0 L, Manual 5-spd, Premium
14 21
$2494
11.40 NA
Porsche 944
4 cyl, 2.5 L, Automatic 3-spd, Regular
17 20
$2035
10.20 NA
Porsche 944
4 cyl, 2.5 L, Manual 5-spd, Regular
18 26
$1830
9.20 NA
Porsche 944 S
4 cyl, 2.5 L, Manual 5-spd, Premium
17 24
$2099
9.60 NA
Porsche 944 Turbo
4 cyl, 2.5 L, Manual 5-spd, Premium
17 24
$1995
9.20 NA

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

Assumed Fuel Prices:

  • Regular: 2.44
  • Premium: 2.66
  • Diesel: 2.27
  • CNG: 1.63
  • Electricity: 0.08 per kilowatt hour
  • E85: 1.81
  • LPG: 2.10