Mercedes-Benz GLK vs. Audi A5 / S5 / RS5 MPG

Chart is based on 36 fuel economy reports for the Mercedes-Benz GLK and 141 fuel economy reports for the Audi A5 / S5 / RS5.

Mercedes-Benz GLK 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
2013	4dr SUV turbocharged 200hp 2.1L I4 Diesel 7-speed shiftable automatic AWD	flat	med	hvy	0	7	53	40	73	35.0
2013	4dr SUV turbocharged 168hp 2.1L I4 Diesel 7-speed shiftable automatic AWD	flat	med	hvy	0	0	5	95	110	36.8
2013	4dr SUV 302-horsepower 3.5L V6 7-speed shiftable automatic RWD	flat	v.lt	hvy	0	0	100	0	0	22.7
2011	4dr SUV 268-horsepower 3.5L V6 7-speed shiftable automatic AWD	hills	med	none	0	9	9	83	84	22.9
2010	4dr SUV 268-horsepower 3.5L V6 7-speed shiftable automatic RWD	flat	light	light	8	23	45	24	66	21.8
2010	4dr SUV 268-horsepower 3.5L V6 7-speed shiftable automatic AWD	flat	light	light	11	17	24	48	93	18.7

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Audi A5 / S5 / RS5 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
2013	2dr Coupe turbocharged 211hp 2.0L I4 8-speed shiftable automatic AWD	flat	med	light	0	0	34	66	75	27.4
2012	2dr Coupe turbocharged 211hp 2.0L I4 6-speed manual AWD	flat	med	light	5	16	50	29	66	24.4
2011	2dr Coupe 354-horsepower 4.2L V8 6-speed shiftable automatic AWD	flat	med	light	10	30	30	30	75	15.6
2011	2dr Coupe 354-horsepower 4.2L V8 6-speed manual AWD	hills	light	light	3	8	20	70	73	19.4
2011	2dr Convertible turbocharged 211hp 2.0L I4 8-speed shiftable CVT FWD	flat	light	none	20	10	20	50	70	25.5
2010	2dr Coupe turbocharged 211hp 2.0L I4 6-speed manual AWD	flat	lead	none	9	11	47	33	72	25.2
2010	2dr Coupe 354-horsepower 4.2L V8 6-speed shiftable automatic AWD	flat	med	hvy	10	10	10	70	120	21.4
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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	23.1
2009	2dr Coupe 354-horsepower 4.2L V8 6-speed manual AWD	flat	med	none	0	17	22	62	67	20.3
2009	2dr Coupe 265-horsepower 3.2L V6 6-speed manual AWD	flat	med	light	10	28	40	23	68	26.5
2008	2dr Coupe turbocharged 240hp 3.0L V6 Diesel 6-speed manual AWD	flat	light	light	0	0	0	100	100	47.0
2008	2dr Coupe turbocharged 170hp 1.8L I4 6-speed manual FWD	flat	med	light	13	18	28	43	160	26.6
2008	2dr Coupe 354-horsepower 4.2L V8 6-speed manual AWD	flat	lead	none	1	14	60	24	73	15.9
2008	2dr Coupe 265-horsepower 3.2L V6 6-speed shiftable automatic AWD	flat	med	hvy	20	24	24	32	80	24.5

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

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

Mercedes-Benz GLK Real Gas Mileage: Pros
Year	Comment
2013	Fuel economy was a "why not to buy" with the GLK350, as the gas-powered Mercedes-Benz crossover trails the competing Audi and BMW in this area. With the diesel, though, the tables turn. BMW doesn't offer a diesel X3 in North America, at least not yet. For 2014, Audi does offer a Q5 TDI.When I heard that Audi was going to offer a diesel compact crossover, I assumed that the engine in question would be a four-cylinder unit. Nope, it's a 240-horsepower 3.0-liter V6. The official line: a four-cylinder wouldn't suit Audi's performance-oriented brand image in the U.S. With a much smaller engine and (partly as a result) a couple hundred pounds less curb weight, the GLK250 BlueTEC tops the Q5 in fuel economy. But, according to the EPA, only on the highway, with a rating of 33 mpg vs. 31.Both crossovers achieve an EPA city rating of 24 mpg. In the real world, the GLK250 impresses in suburuban driving, with the trip computer usually reporting averages from 31 to 35, and on one run to my son's school nearly 40. This is about 50 percent better than in the GLK350. see full Mercedes-Benz GLK review

Mercedes-Benz GLK Real Gas Mileage: Cons
Year	Comment
2010	If you prioritize performance, the GLK's mandatory 3.5-liter V6, upgraded via direct injection from 268 to 302 horsepower for 2013, might seem a good thing. But even after the power bump, the boosted sixes in the Audi and BMW are stronger, and they're paired with more responsive eight-speed automatics (vs. a seven-speed transmission introduced nearly a decade ago). More of an issue for most potential buyers: fuel economy. The GLK350 is more efficient for 2013, thanks to direct injection, electric-steering assist, driving style feedback, and a shudder-free automatic start/stop system (study it, BMW). The EPA ratings have improved from last year's 16 mpg city, 21 highway to 19/24. But even 19/24 is only marginally competitive in the 2013 challenge. The BMW X3 xDrive28i is nearly as quick, and rates 21/28. The quicker X3 xDrive35i matches the GLK in the city, but does a couple mpg better on the highway. In our real-world suburban driving, the GLK350 trailed the BMW X3 xDrive28i by one to two mpg. Not a big difference, but a difference. Mercedes will soon offer a more fuel-efficient engine option in North American GLKs. But it won't be a smaller gas engine. Instead, the new GLK250 will be motivated by a 190-horsepower, four-cylinder diesel engine. see full Mercedes-Benz GLK review

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

Mercedes-Benz GLK Real Gas Mileage: Pros
Year	Body/Powertrain	Comment
2013	4dr SUV turbocharged 168hp 2.1L I4 Diesel 7-speed shiftable automatic AWD	The diesel option was the #1 reason I looked at the vehicule and the deciding point to go with it. At over 200 miles per day to communte, I needed the mileage numbers and in Quebec, diesel is less expensive than regular gas and way less than premium. see full Mercedes-Benz GLK review
2011	4dr SUV 268-horsepower 3.5L V6 7-speed shiftable automatic RWD	better than expected: 19 suburban, 25 highway see full Mercedes-Benz GLK review
2011	4dr SUV 268-horsepower 3.5L V6 7-speed shiftable automatic AWD	A major disappointment. But, to be fair, I live at the top of a mountain in LA and all of my past cars also had bad mileage. It isn't bad on the highway...I get average of 22 mpg...but pure city driving drags it down to 16-17. see full Mercedes-Benz GLK review

Mercedes-Benz GLK Real Gas Mileage: Cons
Year	Body/Powertrain	Comment
2011	4dr SUV 268-horsepower 3.5L V6 7-speed shiftable automatic RWD	having owned a c280 with 3 liter engine and been very happy with performance plus low 30s highway, mid to high 20s suburban, why not put 3 liter in the glk? while glk is heavier, 3.5 liter penalizes mpg for little better performance. otherwise there is nothing not to like and alot to like about this great vehicle. see full Mercedes-Benz GLK review
2011	4dr SUV 268-horsepower 3.5L V6 7-speed shiftable automatic AWD	If you are looking for a Prius....this isn't your car. see full Mercedes-Benz GLK review
2010	4dr SUV 268-horsepower 3.5L V6 7-speed shiftable automatic AWD	sad see full Mercedes-Benz GLK review
2010	4dr SUV 268-horsepower 3.5L V6 7-speed shiftable automatic AWD	Performance comes at a price...gas mileage more on the order of a full size SUV. Wish a diesel had been available. see full Mercedes-Benz GLK review

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