Gas Mileage

2003 Infiniti Q45

Research and compare gas mileage for the 2003 Infiniti Q45

2003 Infiniti Models

  1. FX35 2WD
  2. FX35 AWD
  3. FX45 AWD
  4. G35
  5. I35
  6. M45
  7. Q45
  8. QX4 2WD
  9. QX4 4WD
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Technical Brief (Automatic - 4.5L - 8 Cylinder)

Gas Mileage (EPA Estimated)

The figures below show what the EPA estimates drivers will experience for fuel economy in "real world" driving situations. This version of the Q45 gets up to 23 MPG on the highway, 17 MPG under city driving conditions, and an estimated combined rating of 20 MPG. Highway fuel economy is a full 35% better than city fuel economy.

Highway
23 MPG
Combined
20 MPG
City
17 MPG

Engine

Cylinders:
8
Valves Per Cylinder:
4
Displacement:
4.5 Liters
Guzzler:
No
Turbo:
No
Supercharged:
No
Fuel Type:
Premium

Gas Mileage (EPA Unadjusted)

The figures below show what the EPA observed for fuel economy in labratory tests. These mileages are not typical of "real world" driving fuel economy. In the lab, this version of the Q45 gets up to 30.10 MPG on the highway, 19.27 MPG under city driving conditions, and an estimated combined rating of 22.99 MPG. Labratory highway fuel economy is a full 56% better than city fuel economy.

Highway
30.10 MPG
Combined
22.99 MPG
City
19.27 MPG

Transmission

Type:
Automatic
Sub Type:
S5

Miscellaneous

Drive System:
Rear Wheel Drive
Passenger Volume (4 Door):
107 Cubic Feet
Luggage Volume (4 Door):
14 Cubic Feet

Comparisions

2003 Large Cars

The title for most fuel efficient vehicle in the large cars class in 2003 goes to the Chevrolet Impala with a combined EPA fuel economy rating of 25 miles per gallon. This MPG rating is a full 108% better than the worst in class vehicle, the Bentley Bentley Arnage LWB.

Chevrolet Impala
25 MPG (Automatic - 3.4L - 6 Cylinder)
Chrysler Concorde / LHS
24 MPG (Automatic - 2.7L - 6 Cylinder)
Dodge Intrepid
24 MPG (Automatic - 2.7L - 6 Cylinder)
Chrysler 300 M
21 MPG (Automatic - 3.5L - 6 Cylinder)
Lincoln Mercury Town Car
20 MPG (Automatic - 4.6L - 8 Cylinder)
Infiniti Q45
20 MPG (Automatic - 4.5L - 8 Cylinder)
Mercedes Benz S430
20 MPG (Automatic - 4.3L - 8 Cylinder)
Cadillac Funeral Coach / Hearse
16 MPG (Automatic - 4.6L - 8 Cylinder)
Mercedes Benz S600
15 MPG (Automatic - 5.5L - 12 Cylinder)
Bentley Bentley Arnage LWB
12 MPG (Automatic - 6.8L - 8 Cylinder)
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