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

Join Us

◆

Infiniti G Fuel Economy (L/100km)

L/100km	Number of Vehicles
7 liters per 100 kilometers	1 vehicles
8 liters per 100 kilometers	1 vehicles
9 liters per 100 kilometers	3 vehicles
10 liters per 100 kilometers	7 vehicles
11 liters per 100 kilometers	8 vehicles
12 liters per 100 kilometers	10 vehicles
13 liters per 100 kilometers	8 vehicles
14 liters per 100 kilometers	3 vehicles
15 liters per 100 kilometers	1 vehicles
16 liters per 100 kilometers	0 vehicles
17 liters per 100 kilometers	0 vehicles
18 liters per 100 kilometers	0 vehicles
19 liters per 100 kilometers	0 vehicles
20 liters per 100 kilometers	1 vehicles

Model Year	Body/Powertrain	L/100km
2003	2003 4dr Sedan 330-hp 3.7L V6 7-sp shiftable automatic RWD	11.51	See all data
With the turbocharged 155kW 2.0L I4 engine, 7-speed shiftable automatic transmission, and rear-wheel drive, the 2003 Infiniti G has been averaging 11.51 L/100km (liters per 100 kilometers). The 2003 Infiniti Gs in this analysis were driven mostly on the highway at an average speed of 85 kilometers per hour (about 46.9 percent of the kilometers driven). The rest of the kilometers were in the city (15.3 percent), in heavy traffic (9.1 percent), and in the suburbs (0 percent). In addition, the average 2003 Infiniti G in this analysis was driven on flat terrain with a medium foot and the AC on only some of the time.
2003	2003 4dr Sedan 260-hp 3.5L V6 6-sp manual RWD	10.25	See all data

2003	2003 2dr Coupe 330-hp 3.7L V6 6-sp manual RWD	13.82	See all data

2003	2003 2dr Coupe 330-hp 3.7L V6 7-sp shiftable automatic RWD	9.51	See all data

2003	2003 2dr Coupe 280-hp 3.5L V6 5-sp shiftable automatic RWD	11.43	See all data

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

2003 Infiniti G Real Gas Mileage: Cons
Year	Body/Powertrain	Comment
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