MENU
1 0 3 4 3 4

We are 103,000+ car owners sharing real-world car information.

Join Us

Flagged Gas Tank

 characters remaining

Infiniti G Fuel Economy Data

4dr Sedan 260-hp 3.5L V6 5-sp shiftable automatic RWD

flat, hilly, or mountainousLand driving style: very light to "lead foot"Foot A/C use: none to heavyA/C constant stop and goTraf % many stops per mileCity % stop every mile or twoSub % fairly steady speedHwy % Hwy Spd MPG
flat light hvy 26 25 25 25 75 18.000
flat med none 0 0 70 30 62 16.800
flat med hvy 0 0 50 50 75 23.000
flat med none 0 0 80 20 62 16.700
flat med none 15 35 15 35 75 19.000
flat light none 2 8 8 82 68 25.300
Looking for a warranty? Get a quote.
flat light light 0 0 0 100 74 23.500
flat light hvy 4 23 23 50 74 18.800
flat light none 4 21 43 32 62 18.100
flat med light 5 75 10 10 62 19.600
hills light none 40 20 10 30 70 20.833
flat light light 20 10 50 20 60 20.463
flat med none 20 20 20 40 62 18.800
flat light light 0 10 10 80 70 21.900
flat med none 10 10 30 50 68 18.100
hills light light 5 10 60 25 70 20.400
flat med hvy 15 5 25 55 75 25.800
flat med none 5 25 25 45 60 22.400
flat med none 0 5 5 90 75 24.215
flat light none 10 10 15 65 60 23.340
flat med hvy 10 10 30 50 65 21.000

Return to top

What Our Members Are Saying about the Real Gas Mileage of the 2003 Infiniti G

2003 Infiniti G Real Gas Mileage: Cons
YearBody/PowertrainComment
2004 2dr Coupe 280-horsepower 3.5L V6
5-speed shiftable automatic RWD		 At the very best, my combined fuel economy never got above 20.4 MPG and is recenly under 19. see full Infiniti G review
2004 4dr Sedan 260-horsepower 3.5L V6
5-speed shiftable automatic AWD		 got between 14 and 17 mpg in the city see full Infiniti G review
2004 4dr Sedan 260-horsepower 3.5L V6
6-speed manual RWD		 The G35 takes premium gas and from my research it looked like it would average about 10 mpg less than the Solara. see full Infiniti G review
2004 4dr Sedan 260-horsepower 3.5L V6
5-speed shiftable automatic AWD		 16-17 city/24-25 highway see full Infiniti G review
2004 4dr Sedan 260-horsepower 3.5L V6
5-speed shiftable automatic RWD		 Currently get 25-27 highway and 21=22.5 in the city. Live in extremely mountainous terrain, so mpg would be higher in a flat area such as Nebraska or Kansas. I would have added a 6th gear and kept the power. see full Infiniti G review
2003 4dr Sedan 260-horsepower 3.5L V6
5-speed shiftable automatic RWD		 Very poor city mpg, almost as bad as large SUV. see full Infiniti G review
2003 4dr Sedan 260-horsepower 3.5L V6
5-speed shiftable automatic RWD		 Highway fuel economy should be better, maybe higher fifth gear for lower revs at highway speeds. see full Infiniti G review
2003 4dr Sedan 260-horsepower 3.5L V6
5-speed shiftable automatic RWD		 City fuel economy is terrible. (15L/100km) Highway fuel economy is not as good either. (8L/100km @ 105km/hr) if going any faster, the fuel economy get worse! see full Infiniti G review
2003 2dr Coupe 280-horsepower 3.5L V6
5-speed shiftable automatic RWD		 Freeway or city driving, AC or no AC, always average out to be around 20-21. No more no less. see full Infiniti G review
2003 2dr Coupe 280-horsepower 3.5L V6
6-speed manual RWD		 Horrible fuel milage. Seems like they under-rated the horsepower and over rated the fuel economy. see full Infiniti G review
 

2003 Infiniti G Gas Mileage (MPG)

Unlike other fuel economy surveys, TrueDelta's Real-World Gas Mileage Survey includes questions about how and where a car was driven. So you can get an idea of the Infiniti G's real-world MPG based on how and where you drive a car.