Audi A8 / S8 vs. Mercedes-Benz GL MPG

Chart is based on 28 fuel economy reports for the Audi A8 / S8 and 48 fuel economy reports for the Mercedes-Benz GL.

Audi A8 / S8 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 Sedan, ext. turbocharged 420hp 4.0L V8 8-speed shiftable automatic AWD	flat	med	light	17	0	61	22	75	17.5
2012	4dr Sedan, ext. 372-horsepower 4.2L V8 8-speed shiftable automatic AWD	flat	med	hvy	0	50	0	50	65	17.9
2011	4dr Sedan 372-horsepower 4.2L V8 8-speed shiftable automatic AWD	flat	med	hvy	12	14	39	36	68	20.4
2009	4dr Sedan 350-horsepower 4.2L V8 6-speed shiftable automatic AWD	flat	light	none	0	0	0	100	75	20.0
2008	4dr Sedan, ext. 350-horsepower 4.2L V8 6-speed shiftable automatic AWD	flat	med	none	5	30	30	35	70	19.1
2008	4dr Sedan 350-horsepower 4.2L V8 6-speed shiftable automatic AWD	hills	lead	hvy	5	40	10	45	70	15.0
2007	4dr Sedan, ext. 350-horsepower 4.2L V8 6-speed shiftable automatic AWD	flat	med	hvy	5	5	10	80	75	26.7
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2007	4dr Sedan 350-horsepower 4.2L V8 6-speed shiftable automatic AWD	flat	med	none	7	34	30	29	88	19.5
2005	4dr Sedan, ext. 330-horsepower 4.2L V8 6-speed shiftable automatic AWD	flat	lead	hvy	23	15	25	38	60	18.0
2005	4dr Sedan 330-horsepower 4.2L V8 6-speed shiftable automatic AWD	flat	med	light	8	31	10	52	68	18.4
2004	4dr Sedan, ext. 330-horsepower 4.2L V8 6-speed shiftable automatic AWD	flat	med	light	8	11	15	66	74	18.3
2001	4dr Sedan 360-horsepower 4.2L V8 5-speed shiftable automatic AWD	flat	med	light	38	38	13	13	60	16.5
2000	4dr Sedan 310-horsepower 4.2L V8 5-speed shiftable automatic AWD	flat	light	light	12	8	14	67	60	19.3

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This page shows only averages. See all the Audi A8 / S8 fuel economy data.

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.

See TrueDelta's information for all Sedans

See TrueDelta's information for all Audi models and Mercedes-Benz models.

TrueDelta Reviews the Real Gas Mileage of the Audi A8 / S8

Audi A8 / S8 Real Gas Mileage: Pros
Year	Comment
2013	Fuel economy might seem an odd, "why to buy" for such a large, powerful car. But this large powerful car manages EPA ratings of 18 mpg city, 28 mpg highway, each one mpg better than the superceded V8. In suburban driving the trip computer typically reported averages in the low 20s, but as high as 25.5. We're a long way from large luxury sedans that had trouble cracking 18. The BMW is rated a bit higher, 19/28, but this is close enough to call it a draw. If you want even better fuel economy, Audi how also offers a 240-horsepower diesel with EPA ratings of 24/36. But the TDI is only available with the long wheelbase and will also cost you another $3,700. BMW offers no comparable car on this side of the Atlantic. see full Audi A8 / S8 review

What Our Members Are Saying about the Real Gas Mileage of the Audi A8 / S8

Audi A8 / S8 Real Gas Mileage: Pros
Year	Body/Powertrain	Comment
2004	4dr Sedan, ext. 330-horsepower 4.2L V8 6-speed shiftable automatic AWD	The Audi A8L is an interesting car if bought used. As it is a premium model, it is often bought on lease or by rich people. It is also all aluminium - when sold they are usually in great condition. The fuel economy is good for its size - about 12 miles a gallon city and 22 highway. For an 8 cylinder, all wheel drive performance car this is not bad. However high gas prices make it nota very economic choice for the gas version. With the introduction of the diesel version means used vehicles will come onto th eused market in about three years (2106). Fuel consumption will be better. see full Audi A8 / S8 review

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