Mercedes-Benz GLK vs. Audi A3 / S3 / RS3 MPG

Chart is based on 36 fuel economy reports for the Mercedes-Benz GLK and 183 fuel economy reports for the Audi A3 / S3 / RS3.

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

Audi A3 / S3 / RS3 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
2018	4dr Sedan turbocharged 292hp 2.0L I4 7-speed automated manual AWD	flat	med	none	10	5	30	55	70	28.7
2017	4dr Sedan turbocharged 292hp 2.0L I4 6-speed automated manual AWD	flat	light	none	0	5	25	70	100	29.4
2016	4dr Sedan turbocharged 292hp 2.0L I4 6-speed automated manual AWD	hills	med	light	30	50	0	20	80	22.4
2015	4dr Sedan turbocharged 220hp 2.0L I4 6-speed automated manual AWD	hills	med	light	33	16	5	47	68	28.8
2015	4dr Sedan turbocharged 170hp 1.8L I4 6-speed automated manual FWD	flat	light	light	3	27	38	32	66	30.2
2013	4dr Hatch turbocharged 140hp 2.0L I4 Diesel 6-speed automated manual FWD	hills	med	hvy	0	0	20	80	70	42.0
2012	4dr Hatch turbocharged 140hp 2.0L I4 Diesel 6-speed automated manual FWD	flat	light	none	6	36	10	49	84	37.8
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2011	4dr Hatch turbocharged 140hp 2.0L I4 Diesel 6-speed automated manual FWD	flat	med	light	1	24	21	54	69	39.3
2010	4dr Hatch turbocharged 200hp 2.0L I4 6-speed automated manual FWD	flat	med	hvy	0	100	0	0	0	16.7
2010	4dr Hatch turbocharged 200hp 2.0L I4 6-speed automated manual AWD	mtns	light	none	10	10	50	30	60	24.5
2010	4dr Hatch turbocharged 140hp 2.0L I4 Diesel 6-speed automated manual FWD	flat	med	light	9	5	30	56	75	36.8
2009	4dr Hatch turbocharged 200hp 2.0L I4 6-speed manual FWD	hills	med	none	20	20	20	40	75	28.2
2009	4dr Hatch turbocharged 200hp 2.0L I4 6-speed automated manual FWD	flat	med	light	9	31	39	20	68	26.0
2009	4dr Hatch turbocharged 200hp 2.0L I4 6-speed automated manual AWD	flat	med	light	9	40	17	34	74	25.2
2008	4dr Hatch turbocharged 200hp 2.0L I4 6-speed manual FWD	flat	med	light	16	21	16	46	86	25.5
2008	4dr Hatch turbocharged 200hp 2.0L I4 6-speed automated manual FWD	hills	light	light	12	19	12	57	71	27.5
2008	4dr Hatch 250-horsepower 3.2L V6 6-speed automated manual AWD	flat	med	light	27	27	2	45	70	19.0
2007	4dr Hatch turbocharged 200hp 2.0L I4 6-speed manual FWD	flat	med	light	11	34	20	36	74	26.8
2007	4dr Hatch turbocharged 200hp 2.0L I4 6-speed automated manual FWD	hills	med	light	4	17	22	58	83	29.4
2007	4dr Hatch 250-horsepower 3.2L V6 6-speed automated manual AWD	flat	med	light	6	14	30	50	71	22.2
2006	4dr Hatch turbocharged 200hp 2.0L I4 6-speed manual FWD	flat	med	light	4	35	16	45	85	26.2
2006	4dr Hatch turbocharged 200hp 2.0L I4 6-speed automated manual FWD	flat	light	light	17	28	22	33	89	24.9
2006	4dr Hatch turbocharged 140hp 2.0L I4 Diesel 6-speed automated manual FWD	hills	light	hvy	0	20	60	20	100	33.6
2006	4dr Hatch 250-horsepower 3.2L V6 6-speed automated manual AWD	flat	med	light	1	34	33	32	74	19.8

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This page shows only averages. See all the Audi A3 / S3 / RS3 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

TrueDelta Reviews the Real Gas Mileage of the Audi A3 / S3 / RS3

Audi A3 / S3 / RS3 Real Gas Mileage: Pros
Year	Comment
2016	For a car that can get from zero to 60 mph in under five seconds, the Audi S3 can be quite economical. The tested 2016's EPA ratings were 23 mpg city, 31 mpg highway. For 2017, the S3's ratings have fallen to 21/28 for no obvious reason. Maybe the updates pushed the car into a higher test weight class. I doubt the car's real-world fuel economy has changed. I observed 25 mpg in suburban driving (with a light foot) and nearly 30 mpg on the highway. Despite its more powerful engine, the Mercedes-AMG CLA45 scores even better than the 2017 S3 (if not quite as good as the 2016): 23/30. see full Audi A3 / S3 / RS3 review

What Our Members Are Saying about the Real Gas Mileage of the Audi A3 / S3 / RS3

Audi A3 / S3 / RS3 Real Gas Mileage: Pros
Year	Body/Powertrain	Comment
2013	4dr Hatch turbocharged 140hp 2.0L I4 Diesel 6-speed automated manual FWD	Spectacular. I'm completely sold on diesel. Car can get well over 40mpg on the highway. Worst I've seen thus far is ~36mpg on a tank. see full Audi A3 / S3 / RS3 review
2009	4dr Hatch turbocharged 200hp 2.0L I4 6-speed automated manual AWD	Good fuel economy for a sport car w/ some cargo space. see full Audi A3 / S3 / RS3 review
2008	4dr Hatch turbocharged 200hp 2.0L I4 6-speed manual FWD	Higher than expected for a turbo engine (average about 30 highway and 22 city). see full Audi A3 / S3 / RS3 review
2008	4dr Hatch turbocharged 200hp 2.0L I4 6-speed automated manual FWD	28-30mpg while getting o it! see full Audi A3 / S3 / RS3 review
2008	4dr Hatch turbocharged 200hp 2.0L I4 6-speed automated manual FWD	I am getting 30+ MPG in mixed 50/50 city/hwy driving. Hwy MPG if <70 MPH is easily 34 MPG+. If it had 7 gears, MPG at 70+ would be far better. see full Audi A3 / S3 / RS3 review
2007	4dr Hatch turbocharged 200hp 2.0L I4 6-speed automated manual FWD	23 cty/30 hwy - this is great fuel economy in a car that can get up and go on the interstate, but still zip around town in style. see full Audi A3 / S3 / RS3 review
2007	4dr Hatch turbocharged 200hp 2.0L I4 6-speed manual FWD	20mpg city 24 mpg highway see full Audi A3 / S3 / RS3 review
2007	4dr Hatch turbocharged 200hp 2.0L I4 6-speed manual FWD	great for the power and size of the vehicle. see full Audi A3 / S3 / RS3 review
2007	4dr Hatch turbocharged 200hp 2.0L I4 6-speed manual FWD	Close to 30 mpg day to day; over 30 mpg on the highway. see full Audi A3 / S3 / RS3 review
2007	4dr Hatch turbocharged 200hp 2.0L I4 6-speed automated manual FWD	26mpg real life see full Audi A3 / S3 / RS3 review

Audi A3 / S3 / RS3 Real Gas Mileage: Cons
Year	Body/Powertrain	Comment
2007	4dr Hatch 250-horsepower 3.2L V6 6-speed automated manual AWD	A car this size should weight 3600+ lbs. see full Audi A3 / S3 / RS3 review
2007	4dr Hatch 250-horsepower 3.2L V6 6-speed automated manual AWD	22 Highway. see full Audi A3 / S3 / RS3 review