Infiniti Q45 Full-Active Suspension
16 MPG The 1995 Infiniti Q45 Full-Active Suspension is EPA-rated at 16 MPG combined (14 city / 19 highway). Over 15,000 miles a year that is about 938 gallons, $3000 a year in fuel, or $0.200 per mile at $3.20/gal.
Across its full 1991–1995 run it averages 15.4 MPG, improving by 1 MPG over 5 model years.
Running cost at different fuel prices and mileages
The figure everyone actually wants, and the one the EPA does not publish — because it depends on a fuel price no agency will commit to.
| Fuel price | Per mile | 10,000 mi/yr | 15,000 mi/yr | 20,000 mi/yr |
|---|---|---|---|---|
| $2.50/gal | $0.156 | $1563 | $2344 | $3125 |
| $3.00/gal | $0.188 | $1875 | $2813 | $3750 |
| $3.20/gal | $0.200 | $2000 | $3000 | $4000 |
| $3.50/gal | $0.219 | $2188 | $3281 | $4375 |
| $4.00/gal | $0.250 | $2500 | $3750 | $5000 |
| $4.50/gal | $0.281 | $2813 | $4219 | $5625 |
| $5.00/gal | $0.313 | $3125 | $4688 | $6250 |
Every model year
| Year | Combined | City | Highway | EPA fuel cost/yr | CO₂ g/mi | Trims |
|---|---|---|---|---|---|---|
| 1995 | 16 MPG | 14 | 19 | $4800 | 555 | 1 |
| 1994 | 16 MPG | 14 | 19 | $4800 | 555 | 1 |
| 1993 | 15 MPG | 14 | 18 | $5150 | 592 | 1 |
| 1992 | 15 MPG | 13 | 17 | $5150 | 592 | 1 |
| 1991 | 15 MPG | 13 | 17 | $5150 | 592 | 1 |
Where a model year offered several engines or drivetrains, the figure is the average across all EPA-tested trims that year — the trim count is shown so you can see how much averaging is involved.
How it compares in its class
Among the 261 midsize cars models tracked here, the Infiniti Q45 Full-Active Suspension ranks 245 on current figures, against a class average of 27.3 MPG.
Closest more-efficient alternatives in the same class: Dodge Challenger SRT8 (16.8), BMW M5 (17), BMW M8 Competition Gran Coupe (17), Cadillac CT5 V (17), Chrysler Newport/Fifth Avenue (17).
Tailpipe CO₂ is rated at 555 grams per mile, which works out to roughly 8.3 tonnes a year at 15,000 miles.
Questions
What MPG does the Infiniti Q45 Full-Active Suspension get?
The 1995 Infiniti Q45 Full-Active Suspension is rated at 16 MPG combined by the EPA — 14 city and 19 highway. Across all 5 model years in the database it averages 15.4 MPG, ranging from 15 to 16 depending on year and trim.
How much does a Infiniti Q45 Full-Active Suspension cost in fuel per year?
At 16 MPG and 15,000 miles a year, it burns about 938 gallons — roughly $3000 a year with fuel at $3.20 a gallon, or $0.200 per mile. The EPA's own published annual figure for the 1995 model is $4800.
Has the Infiniti Q45 Full-Active Suspension become more efficient over time?
Yes. It has gone from 15 MPG in 1991 to 16 in 1995 — an improvement of 1 MPG, or 7% across 5 model years.
Is the Infiniti Q45 Full-Active Suspension efficient for its class?
It ranks 245 of 261 in the Midsize Cars class on current figures, against a class average of 27.3 MPG. That is 11.3 worse than typical for the class.
EPA test figures from fueleconomy.gov. Cost per mile and annual fuel spend are computed at a reference price of $3.20 per gallon — use your own price. Estimates based on official test figures and average fuel prices. Real-world consumption varies with driving style, load, terrain and maintenance.