Photo: Infiniti Q45, Public domain, via Wikimedia Commons. It shows the model, not always this exact version.
Infiniti · model year 1991
1991 Infiniti Q45 Full-Active Suspension
Midsize · Rear-Wheel Drive · Gas · EPA class: Midsize Cars
EPA figures · 1991fueleconomy.gov
15MPG combined
13/17MPG city / highway
$5,500fuel a year
592 g CO₂ per mile 4.5 L 8-cyl Automatic 4-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
- 15 MPG
- City MPG
- 13 MPG
- Highway MPG
- 17 MPG
- Annual fuel cost
- $5,500
- Tailpipe CO₂
- 592 g per mile
- Model year
- 1991
- Body
- Car
- EPA size class
- Midsize Cars
- Drive
- Rear-Wheel Drive
- Engine
- 4.5 L 8-cyl
- Transmission
- Automatic 4-spd
- Fuel
- Gasoline
Efficiency
Running cost
The car
Powertrain
More Infiniti model years
1993 Infiniti Q45 Full-Active Suspension
15 MPG · $5,500 fuel a year
1992 Infiniti G20
22 MPG · $3,050 fuel a year 1992 Infiniti G20
24 MPG · $2,800 fuel a year Infiniti1992 Infiniti M30
19 MPG · $4,350 fuel a year 1992 Infiniti Q45
17 MPG · $4,850 fuel a year 1992 Infiniti Q45 Full-Active Suspension
15 MPG · $5,500 fuel a year 1991 Infiniti G20
22 MPG · $3,050 fuel a year 1991 Infiniti G20
24 MPG · $2,800 fuel a yearEvery alternative to the 1991 Infiniti Q45 Full-Active Suspension →