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BMW X3 vs. Mercedes-Benz M-Class MPG

Chart is based on 79 fuel economy reports for the BMW X3 and 47 fuel economy reports for the Mercedes-Benz M-Class.

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  
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 M-Class MPG

Mercedes-Benz M-Class Mercedes-Benz M-Class 2013 29.1 MPG Highway Percentage 56 percent Mercedes-Benz M-Class Mercedes-Benz M-Class 2012 29.0 MPG Highway Percentage 80 percent Mercedes-Benz M-Class Mercedes-Benz M-Class 2011 24.0 MPG Highway Percentage 20 percent Mercedes-Benz M-Class Mercedes-Benz M-Class 2010 21.8 MPG Highway Percentage 35 percent Mercedes-Benz M-Class Mercedes-Benz M-Class 2010 26.6 MPG Highway Percentage 69 percent Mercedes-Benz M-Class Mercedes-Benz M-Class 2010 19.7 MPG Highway Percentage 54 percent Mercedes-Benz M-Class Mercedes-Benz M-Class 2009 24.8 MPG Highway Percentage 44 percent Mercedes-Benz M-Class Mercedes-Benz M-Class 2008 21.2 MPG Highway Percentage 15 percent Mercedes-Benz M-Class Mercedes-Benz M-Class 2008 25.3 MPG Highway Percentage 63 percent Mercedes-Benz M-Class Mercedes-Benz M-Class 2007 21.6 MPG Highway Percentage 45 percent Mercedes-Benz M-Class Mercedes-Benz M-Class 2007 20.8 MPG Highway Percentage 67 percent Mercedes-Benz M-Class Mercedes-Benz M-Class 2006 17.5 MPG Highway Percentage 25 percent Mercedes-Benz M-Class Mercedes-Benz M-Class 2006 19.6 MPG Highway Percentage 54 percent Mercedes-Benz M-Class Mercedes-Benz M-Class 2005 18.5 MPG Highway Percentage 5 percent Mercedes-Benz M-Class Mercedes-Benz M-Class 2005 15.2 MPG Highway Percentage 50 percent Mercedes-Benz M-Class Mercedes-Benz M-Class 2004 18.4 MPG Highway Percentage 40 percent Mercedes-Benz M-Class Mercedes-Benz M-Class 2003 17.5 MPG Highway Percentage 65 percent Mercedes-Benz M-Class Mercedes-Benz M-Class 2003 16.0 MPG Highway Percentage 80 percent Mercedes-Benz M-Class Mercedes-Benz M-Class 2002 15.6 MPG Highway Percentage 44 percent Mercedes-Benz M-Class Mercedes-Benz M-Class 2002 16.1 MPG Highway Percentage 23 percent Mercedes-Benz M-Class Mercedes-Benz M-Class 2002 16.0 MPG Highway Percentage 25 percent Mercedes-Benz M-Class Mercedes-Benz M-Class 2000 27.6 MPG Highway Percentage 80 percent Mercedes-Benz M-Class Mercedes-Benz M-Class 2000 21.5 MPG Highway Percentage 90 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 240hp 3.0L V6 Diesel
7-speed shiftable automatic AWD
flat light hvy 7 21 16 56 65 29.1  
2012 4dr SUV turbocharged 240hp 3.0L V6 Diesel
7-speed shiftable automatic AWD
hills light none 0 5 15 80 64 29.0  
2011 4dr SUV turbocharged 210hp 3.0L V6 Diesel
7-speed shiftable automatic AWD
flat light light 10 10 60 20 60 24.0  
2010 4dr SUV turbocharged 228hp 3.0L V6 Diesel
7-speed shiftable automatic AWD
hills med light 5 10 50 35 100 21.8  
2010 4dr SUV turbocharged 210hp 3.0L V6 Diesel
7-speed shiftable automatic AWD
flat med none 1 5 25 69 70 26.6  
2010 4dr SUV 382-horsepower 5.5L V8
7-speed shiftable automatic AWD
flat med hvy 17 15 15 54 70 19.7  
2009 4dr SUV turbocharged 210hp 3.0L V6 Diesel
7-speed shiftable automatic AWD
flat light light 4 7 46 44 73 24.8  
2008 4dr SUV turbocharged 221hp 3.0L V6 Diesel
7-speed shiftable automatic AWD
flat med none 25 30 30 15 100 21.2  
2008 4dr SUV turbocharged 215hp 3.0L V6 Diesel
7-speed shiftable automatic AWD
flat light light 2 18 17 63 70 25.3  
2007 4dr SUV turbocharged 215hp 3.0L V6 Diesel
7-speed shiftable automatic AWD
flat v.lt none 10 25 20 45 100 21.6  
2007 4dr SUV 268-horsepower 3.5L V6
7-speed shiftable automatic AWD
flat light light 6 9 18 67 69 20.8  
2006 4dr SUV 302-horsepower 5.0L V8
7-speed shiftable automatic AWD
flat lead hvy 25 25 25 25 75 17.5  
2006 4dr SUV 268-horsepower 3.5L V6
7-speed shiftable automatic AWD
hills light light 0 0 46 54 65 19.6  
2005 4dr SUV 288-horsepower 5.0L V8
5-speed shiftable automatic AWD w/low range
flat med hvy 0 47 47 5 80 18.5  
2005 4dr SUV 232-horsepower 3.7L V6
5-speed shiftable automatic AWD w/low range
flat light none 5 20 25 50 70 15.2  
2004 4dr SUV 232-horsepower 3.7L V6
5-speed shiftable automatic AWD w/low range
flat light none 0 0 60 40 67 18.4  
2003 4dr SUV 288-horsepower 5.0L V8
5-speed shiftable automatic AWD w/low range
flat med hvy 5 5 25 65 80 17.5  
2003 4dr SUV 215-horsepower 3.2L V6
5-speed shiftable automatic AWD w/low range
mtns light light 0 0 20 80 65 16.0  
2002 4dr SUV 342-horsepower 5.4L V8
5-speed shiftable automatic AWD w/low range
flat med none 1 48 8 44 90 15.6  
2002 4dr SUV 288-horsepower 5.0L V8
5-speed shiftable automatic AWD w/low range
flat med light 8 50 20 23 88 16.1  
2002 4dr SUV 215-horsepower 3.2L V6
5-speed shiftable automatic AWD w/low range
flat med hvy 15 25 35 25 70 16.0  
2000 4dr SUV 268-horsepower 4.3L V8
5-speed shiftable automatic AWD w/low range
flat light none 0 0 20 80 100 27.6  
2000 4dr SUV 215-horsepower 3.2L V6
5-speed shiftable automatic AWD w/low range
flat med none 0 0 10 90 65 21.5  

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BMW X3 vs. Mercedes-Benz M-Class 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 BMW X3 and Mercedes-Benz M-Class'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 BMW models and Mercedes-Benz models.

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
 

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

Mercedes-Benz M-Class Real Gas Mileage: Pros
YearBody/PowertrainComment
2013 4dr SUV turbocharged 240hp 3.0L V6 Diesel
7-speed shiftable automatic AWD
Upper 20's on highway and mid-20's in suburbia from a vehicle that weighs 5K lbs. see full Mercedes-Benz M-Class review
2009 4dr SUV turbocharged 210hp 3.0L V6 Diesel
7-speed shiftable automatic AWD
Other luxury cars/SUVs require premium gas. Diesel could be same or even cheaper than regular gas and with immense torque and a somewhat light foot I get almost 25Mpg see full Mercedes-Benz M-Class review
2007 4dr SUV turbocharged 215hp 3.0L V6 Diesel
7-speed shiftable automatic AWD
5000 lbs vehicle. Gets 32 mpg on highway up to 75 mph, faster than that mpg drops. 23 to 24 mpg around town see full Mercedes-Benz M-Class review
Mercedes-Benz M-Class Real Gas Mileage: Cons
YearBody/PowertrainComment
2007 4dr SUV 302-horsepower 5.0L V8
7-speed shiftable automatic AWD
Have a V8, so I should have expected, but mpg is averaging about 16 around town. With the current gas prices, I dread going to the pump. $90 to fill up the huge tank. see full Mercedes-Benz M-Class review