Photo: Porsche 928 by Alexander Migl, CC BY-SA 4.0, via Wikimedia Commons. It shows the model, not always this exact version.
Porsche · model year 1991
1991 Porsche 928 S4
Minicompact · Rear-Wheel Drive · Gas · EPA class: Minicompact Cars
EPA figures · 1991fueleconomy.gov
14MPG combined
11/18MPG city / highway
$5,850fuel a year
635 g CO₂ per mile 5.0 L 8-cyl Manual 5-spd
This car on fueleconomy.gov, read 2 October 2026. Your own figures depend on how and where you drive.
Where it places
Every figure on record
- Combined MPG
- 14 MPG
- City MPG
- 11 MPG
- Highway MPG
- 18 MPG
- Annual fuel cost
- $5,850
- Tailpipe CO₂
- 635 g per mile
- Model year
- 1991
- Body
- Car
- EPA size class
- Minicompact Cars
- Drive
- Rear-Wheel Drive
- Engine
- 5.0 L 8-cyl
- Transmission
- Manual 5-spd
- Fuel
- Gasoline
Efficiency
Running cost
The car
Powertrain
More Porsche model years
1991 Pontiac Trans Sport 2WD
18 MPG · $3,700 fuel a year
1991 Porsche 911 Carrera 4/2
17 MPG · $4,850 fuel a year 1991 Porsche 911 Carrera 4/2
16 MPG · $5,150 fuel a year 1991 Porsche 911 Carrera 4/2
16 MPG · $5,150 fuel a year
1991 Porsche 911 Turbo
14 MPG · $5,850 fuel a year 1991 Porsche 928 S4
15 MPG · $5,500 fuel a year 1991 Porsche 928 S4
15 MPG · $4,450 fuel a year