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Mercedes-Benz GLK vs. BMW X3 MPG

Chart is based on 36 fuel economy reports for the Mercedes-Benz GLK and 79 fuel economy reports for the BMW X3.

Mercedes-Benz GLK MPG

Mercedes-Benz GLK Mercedes-Benz GLK 2013 35.0 MPG Highway Percentage 40 percent Mercedes-Benz GLK Mercedes-Benz GLK 2013 36.8 MPG Highway Percentage 95 percent Mercedes-Benz GLK Mercedes-Benz GLK 2013 22.7 MPG Highway Percentage 0 percent Mercedes-Benz GLK Mercedes-Benz GLK 2011 22.9 MPG Highway Percentage 83 percent Mercedes-Benz GLK Mercedes-Benz GLK 2010 21.8 MPG Highway Percentage 24 percent Mercedes-Benz GLK Mercedes-Benz GLK 2010 18.7 MPG Highway Percentage 48 percent
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.

BMW X3 MPG

BMW X3 BMW X3 2014 25.5 MPG Highway Percentage 85 percent BMW X3 BMW X3 2014 31.8 MPG Highway Percentage 25 percent BMW X3 BMW X3 2013 19.7 MPG Highway Percentage 24 percent BMW X3 BMW X3 2012 26.8 MPG Highway Percentage 75 percent BMW X3 BMW X3 2011 22.8 MPG Highway Percentage 40 percent BMW X3 BMW X3 2011 24.6 MPG Highway Percentage 60 percent BMW X3 BMW X3 2009 21.0 MPG Highway Percentage 30 percent BMW X3 BMW X3 2008 20.8 MPG Highway Percentage 51 percent BMW X3 BMW X3 2008 21.0 MPG Highway Percentage 70 percent BMW X3 BMW X3 2007 20.0 MPG Highway Percentage 55 percent BMW X3 BMW X3 2007 20.1 MPG Highway Percentage 30 percent BMW X3 BMW X3 2006 19.3 MPG Highway Percentage 34 percent BMW X3 BMW X3 2005 17.3 MPG Highway Percentage 36 percent BMW X3 BMW X3 2005 22.5 MPG Highway Percentage 56 percent BMW X3 BMW X3 2005 20.2 MPG Highway Percentage 59 percent BMW X3 BMW X3 2004 20.6 MPG Highway Percentage 62 percent BMW X3 BMW X3 2004 23.1 MPG Highway Percentage 49 percent
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 2.0L I4
8-speed shiftable automatic AWD		 flat light none 5 10 0 85 70 25.5  
2014 4dr SUV turbocharged 180hp 2.0L I4 Diesel
8-speed shiftable automatic AWD		 flat v.lt light 17 50 8 25 90 31.8  
2013 4dr SUV turbocharged 240hp 2.0L I4
8-speed shiftable automatic AWD		 hills med light 17 39 20 24 58 19.7  
2012 4dr SUV 240-horsepower 3.0L I6
8-speed shiftable automatic AWD		 flat light light 2 20 3 75 70 26.8  
2011 4dr SUV turbocharged 300hp 3.0L I6
8-speed shiftable automatic AWD		 flat med hvy 30 10 20 40 70 22.8  
2011 4dr SUV 240-horsepower 3.0L I6
8-speed shiftable automatic AWD		 flat med none 0 30 10 60 74 24.6  
2009 4dr SUV 260-horsepower 3.0L I6
6-speed shiftable automatic AWD		 flat light light 10 10 50 30 75 21.0  
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2008 4dr SUV 260-horsepower 3.0L I6
6-speed shiftable automatic AWD		 flat med light 13 13 24 51 74 20.8  
2008 4dr SUV 260-horsepower 3.0L I6
6-speed manual AWD		 hills med light 0 10 20 70 65 21.0  
2007 4dr SUV 260-horsepower 3.0L I6
6-speed shiftable automatic AWD		 flat med light 11 23 11 55 69 20.0  
2007 4dr SUV 260-horsepower 3.0L I6
6-speed manual AWD		 hills light light 20 50 0 30 60 20.1  
2006 4dr SUV 225-horsepower 3.0L I6
5-speed shiftable automatic AWD		 flat med light 21 14 31 34 75 19.3  
2005 4dr SUV 225-horsepower 3.0L I6
5-speed shiftable automatic AWD		 flat med light 5 47 12 36 70 17.3  
2005 4dr SUV 184-horsepower 2.5L I6
6-speed manual AWD		 hills light light 44 0 0 56 60 22.5  
2005 4dr SUV 184-horsepower 2.5L I6
5-speed shiftable automatic AWD		 flat med none 16 13 13 59 115 20.2  
2004 4dr SUV 225-horsepower 3.0L I6
5-speed shiftable automatic AWD		 flat med hvy 2 9 27 62 73 20.6  
2004 4dr SUV 184-horsepower 2.5L I6
5-speed shiftable automatic AWD		 hills light light 4 9 39 49 71 23.1  

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This page shows only averages. See all the BMW X3 fuel economy data.

Mercedes-Benz GLK vs. BMW X3 MPG

Unlike other fuel economy surveys, TrueDelta's Real-World Gas Mileage Survey includes questions about how and where a car was driven. So you can get an idea of the Mercedes-Benz GLK and BMW X3's where a car was driven. So you can get an idea of their real-world MPG based on how and where you drive a car.

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

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

Mercedes-Benz GLK Real Gas Mileage: Pros
YearComment
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
YearComment
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
YearBody/PowertrainComment
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
YearBody/PowertrainComment
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 BMW X3

BMW X3 Real Gas Mileage: Pros
YearComment
2013 While the boosted four has a clear performance advantage, the swap was motivated primarily by the push for better fuel economy. EPA ratings are 21 mpg city, 28 highway, vs. the 2012 six's 19/25. An Audi Q5 comes close, 20/28, but with 211 horsepower isn't as strong. Despite weighing about 400 pounds less than the X3's 4,112, a Ford Escape with a similarly spec'd engine does no better. A Mercedes GLK350? 19/24. The Volvo is even worse. Compared to cars, the X3 doesn't fare as well. The roomier, nearly as heavy 528i rates 22/33. The crossover's larger frontal area and higher ground clearance take their toll as speed climbs. In our real-world sub-freezing suburban driving, the trip computer usually reported about 21 once the engine was warmed up, matching the EPA rating and quite good for a powerful, two-ton, all-wheel-drive vehicle. Engage an aggressive Eco Pro mode for a Prius-like throttle response and ultra-low rpm shifts, and mid-20s are easily achievable while high 20s are possible. I even observed 32 over one short trip where the lights were in my favor. But the cars behind you won't be happy. Conversely, enjoy the turbo at every opportunity and fuel economy will fall into the teens. A defeatable standard auto start/stop system operates a little more smoothly than in last year's 3-Series, but not as smoothly as it ought to. see full BMW X3 review
 

What Our Members Are Saying about the Real Gas Mileage of the BMW X3

BMW X3 Real Gas Mileage: Pros
YearBody/PowertrainComment
2007 4dr SUV 260-horsepower 3.0L I6
6-speed shiftable automatic AWD		 We get 22.5 mpg consistently in overall averaging and 26 to 27 on open road trips. see full BMW X3 review
BMW X3 Real Gas Mileage: Cons
YearBody/PowertrainComment
2009 4dr SUV 260-horsepower 3.0L I6
6-speed shiftable automatic AWD		 Have noticed as low as 10 mpg in start and stop city driving. Average for daily driving is 14 mpg. It uses premium fuel so driving this car is already very expensive. see full BMW X3 review
2006 4dr SUV 225-horsepower 3.0L I6
5-speed shiftable automatic AWD		 City driving fuel economy is not bad for an SUV. I average around 16MPG battling heavy traffic and my need for “enjoying using the accelerator”. Highway mileage is not so great. Cruising at 70-80MPH returns around 22MPG. see full BMW X3 review