Fuel economy & running costsGasoline
#491 of 493 · Infiniti cars
1991 InfinitiQ45 Full-Active Suspension
Midsize Cars · Rear-Wheel Drive · 4.5 L 8-cyl
15MPGcombined
13city
17highway
A year of fuel$5,500
CO₂ from the tailpipe592.5 g/mi
Figures from the EPA label (fueleconomy.gov), the same as on the car's window sticker.
Against the 493 infiniti cars
Bars are scaled to the best in the list; the mark shows the list average. Lower is better for fuel cost; higher is better for the rest. All figures are the EPA's.
Summary
1991 Infiniti Q45 Full-Active Suspension by Infiniti. The figures below are from US EPA fueleconomy.gov, with the page each one came from.
Details
- Model year
- 1991fueleconomy.gov · 3 Oct 2026
Efficiency
- Combined MPG
- 15fueleconomy.gov · 3 Oct 2026
- City MPG
- 13fueleconomy.gov · 3 Oct 2026
- Highway MPG
- 17fueleconomy.gov · 3 Oct 2026
Running cost
- Annual fuel cost
- $5,500fueleconomy.gov · 3 Oct 2026
- CO₂ (tailpipe)
- 592.5 g/mifueleconomy.gov · 3 Oct 2026
Car
- Body
- Carfueleconomy.gov · 3 Oct 2026
- EPA class
- Midsize Carsfueleconomy.gov · 3 Oct 2026
- Drive
- Rear-Wheel Drivefueleconomy.gov · 3 Oct 2026
Powertrain
- Engine
- 4.5 L 8-cylfueleconomy.gov · 3 Oct 2026
- Transmission
- Automatic 4-spdfueleconomy.gov · 3 Oct 2026
- Fuel
- Gasolinefueleconomy.gov · 3 Oct 2026
More infiniti cars
See the list
#1 2027 · Infiniti QX60 AWD 24Combined MPG $3,400Fuel / year #2 2027 · Infiniti QX60 FWD 24Combined MPG $3,400Fuel / year 
#3 2027 · Infiniti QX65 AWD 22Combined MPG $3,750Fuel / year 
#4 2027 · Infiniti QX80 2WD 18Combined MPG $4,550Fuel / year #5 2027 · Infiniti QX80 4WD 17Combined MPG $4,850Fuel / year #6 2026 · Infiniti QX60 AWD 24Combined MPG $3,400Fuel / year Listed on CarCody
Sources
- fueleconomy.gov/feg/noframes/7959.shtml· checked 3 Oct 2026