Mercedes-Benz GL vs. Pontiac G6 MPG

Chart is based on 48 fuel economy reports for the Mercedes-Benz GL and 46 fuel economy reports for the Pontiac G6.

Mercedes-Benz GL MPG

Year	Body/Powertrain	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
2014	4dr SUV turbocharged 240hp 3.0L V6 Diesel 7-speed shiftable automatic AWD	flat	light	light	1	4	15	80	65	27.3
2011	4dr SUV 382-horsepower 5.5L V8 7-speed shiftable automatic AWD	flat	light	hvy	1	49	20	30	70	15.0
2010	4dr SUV turbocharged 210hp 3.0L V6 Diesel 7-speed shiftable automatic AWD	flat	light	light	7	13	34	46	64	24.0
2009	4dr SUV turbocharged 210hp 3.0L V6 Diesel 7-speed shiftable automatic AWD	flat	med	hvy	0	13	60	27	72	22.5
2009	4dr SUV 335-horsepower 4.7L V8 7-speed shiftable automatic AWD	flat	med	light	21	22	27	30	60	18.0
2008	4dr SUV turbocharged 215hp 3.0L V6 Diesel 7-speed shiftable automatic AWD	flat	light	light	6	23	31	41	71	22.4
2008	4dr SUV 335-horsepower 4.7L V8 7-speed shiftable automatic AWD w/low range	flat	med	hvy	13	30	28	30	83	17.0
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2008	4dr SUV 335-horsepower 4.7L V8 7-speed shiftable automatic AWD	flat	med	none	21	21	23	35	85	17.3
2007	4dr SUV turbocharged 215hp 3.0L V6 Diesel 7-speed shiftable automatic AWD	hills	light	light	3	12	22	64	67	25.3
2007	4dr SUV 335-horsepower 4.7L V8 7-speed shiftable automatic AWD w/low range	hills	med	light	15	21	22	42	60	16.0
2007	4dr SUV 335-horsepower 4.7L V8 7-speed shiftable automatic AWD	flat	med	light	9	16	38	38	65	17.4

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This page shows only averages. See all the Mercedes-Benz GL fuel economy data.

Pontiac G6 MPG

Year	Body/Powertrain	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
2009	4dr Sedan 219-horsepower 3.5L V6 4-speed shiftable automatic FWD	flat	med	light	0	32	0	68	70	24.0
2008	4dr Sedan 219-horsepower 3.5L V6 4-speed automatic FWD	flat	med	light	23	24	32	21	80	23.4
2008	4dr Sedan 164-horsepower 2.4L I4 4-speed automatic FWD	flat	med	light	2	23	13	62	78	26.1
2008	2dr Coupe 219-horsepower 3.5L V6 4-speed shiftable automatic FWD	flat	med	light	15	35	35	15	60	18.0
2007	4dr Sedan 252-horsepower 3.6L V6 6-speed shiftable automatic FWD	flat	light	light	10	25	25	40	55	26.0
2007	4dr Sedan 224-horsepower 3.5L V6 4-speed shiftable automatic FWD	flat	light	light	13	18	18	53	68	22.8
2007	4dr Sedan 224-horsepower 3.5L V6 4-speed automatic FWD	flat	med	none	0	2	4	95	73	23.0
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2007	2dr Hardtop conv. 217-horsepower 3.5L V6 4-speed shiftable automatic FWD	flat	light	light	6	13	9	71	62	24.5
2007	2dr Coupe 224-horsepower 3.5L V6 4-speed shiftable automatic FWD	flat	med	light	19	15	29	37	69	20.0
2006	4dr Sedan 240-horsepower 3.9L V6 4-speed shiftable automatic FWD	flat	med	none	5	3	56	36	66	19.9
2006	4dr Sedan 201-horsepower 3.5L V6 4-speed shiftable automatic FWD	flat	med	light	18	15	20	47	95	24.1
2006	4dr Sedan 201-horsepower 3.5L V6 4-speed automatic FWD	flat	light	light	16	19	9	55	67	31.7
2006	4dr Sedan 167-horsepower 2.4L I4 4-speed automatic FWD	hills	med	none	32	0	9	59	68	30.2
2006	2dr Hardtop conv. 227-horsepower 3.9L V6 4-speed shiftable automatic FWD	flat	light	none	0	60	30	10	75	17.8
2006	2dr Coupe 240-horsepower 3.9L V6 6-speed manual FWD	flat	med	light	18	36	25	21	85	22.4
2006	2dr Coupe 240-horsepower 3.9L V6 4-speed shiftable automatic FWD	flat	med	light	3	27	30	41	70	20.0
2006	2dr Coupe 201-horsepower 3.5L V6 4-speed shiftable automatic FWD	flat	light	none	2	10	30	58	100	31.4
2005	4dr Sedan 200-horsepower 3.5L V6 4-speed shiftable automatic FWD	flat	med	light	3	3	25	70	100	26.3

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This page shows only averages. See all the Pontiac G6 fuel economy data.

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TrueDelta Reviews the Real Gas Mileage of the Mercedes-Benz GL

Mercedes-Benz GL Real Gas Mileage: Pros
Year	Comment
2013	In the EPA's fuel economy tests the Mercedes-Benz GL350 BlueTEC rates 19 mpg city and 26 mpg highway. We observed low 20s in casual suburban driving (a few mpg lower with a heavy foot, a few mpg higher with a very light one) and 25.5 on our trip to Chicago and back (which included some heavy urban driving and 70-mph highways). These numbers don't seem so great, given that the GL350 burns diesel? Consider that the GL-Class is not only wide and tall but also very heavy, at nearly 5,500 pounds unloaded. The gas-powered GL450 is rated 14/19. Our family vehicle, a Ford Taurus X that weighs over 1,000 pounds less than the Mercedes, struggles to crack 22 on the highway. The Audi Q7 rates the same in city driving, and a couple mpg better on the highway. Since the GL350 is almost in another class size-wise, I'm calling this one a draw. Multiply this fuel economy by a 26.4-gallon tank, and the GL350 can go quite far between $100+ fill-ups. Is it really possible to drive the nearly 300 miles to Chicago--and then back--on one tank? Yes it is, with nearly a quarter-tank to spare. (Is it possible to do this without any of three kids needing to stop for a bathroom break? To our even greater surprise, yes to this as well. They were busy watching the $1,950 dual-screen entertainment system.) see full Mercedes-Benz GL review

What Our Members Are Saying about the Real Gas Mileage of the Mercedes-Benz GL

Mercedes-Benz GL Real Gas Mileage: Pros
Year	Body/Powertrain	Comment
2010	4dr SUV turbocharged 210hp 3.0L V6 Diesel 7-speed shiftable automatic AWD	For a large, seven passenger SUV it can deliver upwards of 28 mpg on the highway. see full Mercedes-Benz GL review
2008	4dr SUV turbocharged 215hp 3.0L V6 Diesel 7-speed shiftable automatic AWD	25 mpg highway fuel efficiency for a large 7 passenger SUV is fantastic see full Mercedes-Benz GL review
2008	4dr SUV turbocharged 215hp 3.0L V6 Diesel 7-speed shiftable automatic AWD	Diesel provides 25 MPG on the highway see full Mercedes-Benz GL review

Mercedes-Benz GL Real Gas Mileage: Cons
Year	Body/Powertrain	Comment
2010	4dr SUV 335-horsepower 4.7L V8 7-speed shiftable automatic AWD	15 mpg average. premium fuel. see full Mercedes-Benz GL review

What Our Members Are Saying about the Real Gas Mileage of the Pontiac G6

Pontiac G6 Real Gas Mileage: Pros
Year	Body/Powertrain	Comment
2009	4dr Sedan 164-horsepower 2.4L I4 6-speed shiftable automatic FWD	I opted to get the 4 cylinder 6 speed automatic because of the higher EPA rating and I have a fairly long commute to and from work. see full Pontiac G6 review
2007	4dr Sedan 169-horsepower 2.4L I4 4-speed automatic FWD	Getting 25 city miles see full Pontiac G6 review
2007	2dr Coupe 224-horsepower 3.5L V6 4-speed shiftable automatic FWD	Amazingly it gets 30+ on the highway. I usually drive in stop-and-go traffic but still get 20 mpg easily. see full Pontiac G6 review
2006	4dr Sedan 201-horsepower 3.5L V6 4-speed automatic FWD	Even with a 6 cylinder, and my overzealous driving, I regularly got 28-29 MPG. This is a mix of highway and city driving in a very hilly area. see full Pontiac G6 review

Pontiac G6 Real Gas Mileage: Cons
Year	Body/Powertrain	Comment
2008	4dr Sedan 219-horsepower 3.5L V6 4-speed automatic FWD	The V6 I drove had MPG ratings slightly worse than the 4-cyl models I was looking at. see full Pontiac G6 review
2007	2dr Hardtop conv. 217-horsepower 3.5L V6 4-speed shiftable automatic FWD	Not good enough. see full Pontiac G6 review