Audi A5 / S5 / RS5 vs. Mercedes-Benz GL Fuel Economy (g/100m)

Chart is based on 141 fuel economy reports for the Audi A5 / S5 / RS5 and 48 fuel economy reports for the Mercedes-Benz GL.

Audi A5 / S5 / RS5 g/100m

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	g/100m
2013	2dr Coupe turbocharged 211hp 2.0L I4 8-speed shiftable automatic AWD	flat	med	light	0	0	34	66	75	3.7
2012	2dr Coupe turbocharged 211hp 2.0L I4 6-speed manual AWD	flat	med	light	5	16	50	29	66	4.1
2011	2dr Coupe 354-horsepower 4.2L V8 6-speed shiftable automatic AWD	flat	med	light	10	30	30	30	75	6.4
2011	2dr Coupe 354-horsepower 4.2L V8 6-speed manual AWD	hills	light	light	3	8	20	70	73	5.2
2011	2dr Convertible turbocharged 211hp 2.0L I4 8-speed shiftable CVT FWD	flat	light	none	20	10	20	50	70	3.9
2010	2dr Coupe turbocharged 211hp 2.0L I4 6-speed manual AWD	flat	lead	none	9	11	47	33	72	4.3
2010	2dr Coupe 354-horsepower 4.2L V8 6-speed shiftable automatic AWD	flat	med	hvy	10	10	10	70	120	25.9
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2010	2dr Convertible supercharged 333hp 3.0L V6 7-speed automated manual AWD	hills	med	none	0	5	40	55	88	13.1
2009	2dr Coupe 354-horsepower 4.2L V8 6-speed manual AWD	flat	med	none	0	17	22	62	67	5.0
2009	2dr Coupe 265-horsepower 3.2L V6 6-speed manual AWD	flat	med	light	10	28	40	23	68	3.8
2008	2dr Coupe turbocharged 240hp 3.0L V6 Diesel 6-speed manual AWD	flat	light	light	0	0	0	100	100	11.8
2008	2dr Coupe turbocharged 170hp 1.8L I4 6-speed manual FWD	flat	med	light	13	18	28	43	160	20.9
2008	2dr Coupe 354-horsepower 4.2L V8 6-speed manual AWD	flat	lead	none	1	14	60	24	73	6.8
2008	2dr Coupe 265-horsepower 3.2L V6 6-speed shiftable automatic AWD	flat	med	hvy	20	24	24	32	80	4.1

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This page shows only averages. See all the Audi A5 / S5 / RS5 fuel economy data.

Mercedes-Benz GL g/100m

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	g/100m
2014	4dr SUV turbocharged 240hp 3.0L V6 Diesel 7-speed shiftable automatic AWD	flat	light	light	1	4	15	80	65	3.7
2011	4dr SUV 382-horsepower 5.5L V8 7-speed shiftable automatic AWD	flat	light	hvy	1	49	20	30	70	6.7
2010	4dr SUV turbocharged 210hp 3.0L V6 Diesel 7-speed shiftable automatic AWD	flat	light	light	7	13	34	46	64	4.2
2009	4dr SUV turbocharged 210hp 3.0L V6 Diesel 7-speed shiftable automatic AWD	flat	med	hvy	0	13	60	27	72	4.5
2009	4dr SUV 335-horsepower 4.7L V8 7-speed shiftable automatic AWD	flat	med	light	21	22	27	30	60	5.6
2008	4dr SUV turbocharged 215hp 3.0L V6 Diesel 7-speed shiftable automatic AWD	flat	light	light	6	23	31	41	71	6.5
2008	4dr SUV 335-horsepower 4.7L V8 7-speed shiftable automatic AWD w/low range	flat	med	hvy	13	30	28	30	83	5.9
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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	21.6
2007	4dr SUV turbocharged 215hp 3.0L V6 Diesel 7-speed shiftable automatic AWD	hills	light	light	3	12	22	64	67	4.0
2007	4dr SUV 335-horsepower 4.7L V8 7-speed shiftable automatic AWD w/low range	hills	med	light	15	21	22	42	60	6.3
2007	4dr SUV 335-horsepower 4.7L V8 7-speed shiftable automatic AWD	flat	med	light	9	16	38	38	65	5.8

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

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What Our Members Are Saying about the Real Gas Mileage of the Audi A5 / S5 / RS5

Audi A5 / S5 / RS5 Real Gas Mileage: Pros
Year	Body/Powertrain	Comment
2013	2dr Coupe turbocharged 211hp 2.0L I4 8-speed shiftable automatic AWD	Mileage seems to have leveled out at about 27 mpg with a 60/40 mix of highway and suburban driving. On longer trips, it has been as high as 30 mpg while driving a steady 75 mph. see full Audi A5 / S5 / RS5 review
2010	2dr Coupe turbocharged 211hp 2.0L I4 6-speed manual AWD	Averaging 9L/100KM, without feeling too conservative. see full Audi A5 / S5 / RS5 review

Audi A5 / S5 / RS5 Real Gas Mileage: Cons
Year	Body/Powertrain	Comment
2011	2dr Coupe 354-horsepower 4.2L V8 6-speed manual AWD	I knew what gas mileage the S5 got long before I stepped onto the dealer lot. Still, I get 24 mpg on a full highway run. see full Audi A5 / S5 / RS5 review
2009	2dr Coupe turbocharged 170hp 2.0L I4 Diesel 6-speed manual AWD	Fuel economy is fair when going for a long ride, the car is AWD and heavy. I did however expect a somewhat lower fuel consumption when driving short-distance. see full Audi A5 / S5 / RS5 review
2008	2dr Coupe 354-horsepower 4.2L V8 6-speed manual AWD	It is not great, and if you have fun with the car, you will get less than 15MPG see full Audi A5 / S5 / RS5 review
2008	2dr Coupe 354-horsepower 4.2L V8 6-speed manual AWD	drinks too fast when driving is more aggressive see full Audi A5 / S5 / RS5 review
2008	2dr Coupe 354-horsepower 4.2L V8 6-speed manual AWD	Thirsty V8 coupled with a car that was born to be driven hard equals mid-teen MPG in mostly non-highway driving. see full Audi A5 / S5 / RS5 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