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Infiniti FX vs. Mercedes-Benz R-Class MPG

Chart is based on 81 fuel economy reports for the Infiniti FX and 37 fuel economy reports for the Mercedes-Benz R-Class.

Infiniti FX MPG

Infiniti FX Infiniti FX 2012 16.4 MPG Highway Percentage 20 percent Infiniti FX Infiniti FX 2011 22.1 MPG Highway Percentage 33 percent Infiniti FX Infiniti FX 2010 14.9 MPG Highway Percentage 32 percent Infiniti FX Infiniti FX 2010 18.2 MPG Highway Percentage 55 percent Infiniti FX Infiniti FX 2009 19.9 MPG Highway Percentage 42 percent Infiniti FX Infiniti FX 2008 19.1 MPG Highway Percentage 19 percent Infiniti FX Infiniti FX 2008 17.3 MPG Highway Percentage 41 percent Infiniti FX Infiniti FX 2007 19.0 MPG Highway Percentage 20 percent Infiniti FX Infiniti FX 2007 19.1 MPG Highway Percentage 31 percent Infiniti FX Infiniti FX 2006 18.0 MPG Highway Percentage 95 percent Infiniti FX Infiniti FX 2006 18.9 MPG Highway Percentage 48 percent Infiniti FX Infiniti FX 2005 13.4 MPG Highway Percentage 5 percent Infiniti FX Infiniti FX 2005 15.8 MPG Highway Percentage 67 percent Infiniti FX Infiniti FX 2005 18.4 MPG Highway Percentage 53 percent Infiniti FX Infiniti FX 2004 18.3 MPG Highway Percentage 40 percent Infiniti FX Infiniti FX 2004 17.4 MPG Highway Percentage 34 percent Infiniti FX Infiniti FX 2004 16.6 MPG Highway Percentage 35 percent Infiniti FX Infiniti FX 2003 16.1 MPG Highway Percentage 32 percent Infiniti FX Infiniti FX 2003 25.9 MPG Highway Percentage 27 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
2012 4dr SUV 303-horsepower 3.5L V6
7-speed shiftable automatic AWD		 flat med light 0 0 80 20 70 16.4  
2011 4dr SUV 303-horsepower 3.5L V6
7-speed shiftable automatic AWD		 flat light light 33 33 0 33 60 22.1  
2010 4dr SUV 390-horsepower 5.0L V8
7-speed shiftable automatic AWD		 flat lead hvy 20 22 27 32 78 14.9  
2010 4dr SUV 303-horsepower 3.5L V6
7-speed shiftable automatic AWD		 mtns lead light 3 0 43 55 73 18.2  
2009 4dr SUV 303-horsepower 3.5L V6
7-speed shiftable automatic RWD		 flat light light 10 45 3 42 70 19.9  
2008 4dr SUV 275-horsepower 3.5L V6
5-speed shiftable automatic RWD		 flat light none 0 81 0 19 60 19.1  
2008 4dr SUV 275-horsepower 3.5L V6
5-speed shiftable automatic AWD		 flat med light 24 18 18 41 63 17.3  
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2007 4dr SUV 275-horsepower 3.5L V6
5-speed shiftable automatic RWD		 flat med light 0 0 80 20 80 19.0  
2007 4dr SUV 275-horsepower 3.5L V6
5-speed shiftable automatic AWD		 flat med light 23 23 24 31 65 19.1  
2006 4dr SUV 320-horsepower 4.5L V8
5-speed shiftable automatic AWD		 flat light hvy 0 0 5 95 80 18.0  
2006 4dr SUV 280-horsepower 3.5L V6
5-speed shiftable automatic AWD		 flat med light 8 10 34 48 65 18.9  
2005 4dr SUV 315-horsepower 4.5L V8
5-speed shiftable automatic AWD		 flat med light 5 80 10 5 120 13.4  
2005 4dr SUV 280-horsepower 3.5L V6
5-speed shiftable automatic RWD		 flat light none 0 0 33 67 60 15.8  
2005 4dr SUV 280-horsepower 3.5L V6
5-speed shiftable automatic AWD		 flat med none 10 8 29 53 71 18.4  
2004 4dr SUV 315-horsepower 4.5L V8
5-speed shiftable automatic AWD		 flat med hvy 3 16 41 40 71 18.3  
2004 4dr SUV 280-horsepower 3.5L V6
5-speed shiftable automatic RWD		 flat med hvy 13 31 23 34 66 17.4  
2004 4dr SUV 280-horsepower 3.5L V6
5-speed shiftable automatic AWD		 hills lead light 9 30 26 35 70 16.6  
2003 4dr SUV 315-horsepower 4.5L V8
5-speed shiftable automatic AWD		 flat med light 7 14 47 32 73 16.1  
2003 4dr SUV 280-horsepower 3.5L V6
5-speed shiftable automatic RWD		 flat med light 9 18 45 27 60 25.9  

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This page shows only averages. See all the Infiniti FX fuel economy data.

Mercedes-Benz R-Class MPG

Mercedes-Benz R-Class Mercedes-Benz R-Class 2010 23.7 MPG Highway Percentage 40 percent Mercedes-Benz R-Class Mercedes-Benz R-Class 2008 20.8 MPG Highway Percentage 55 percent Mercedes-Benz R-Class Mercedes-Benz R-Class 2008 20.1 MPG Highway Percentage 44 percent Mercedes-Benz R-Class Mercedes-Benz R-Class 2007 25.0 MPG Highway Percentage 45 percent Mercedes-Benz R-Class Mercedes-Benz R-Class 2007 16.4 MPG Highway Percentage 26 percent Mercedes-Benz R-Class Mercedes-Benz R-Class 2006 15.2 MPG Highway Percentage 19 percent Mercedes-Benz R-Class Mercedes-Benz R-Class 2006 20.0 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
2010 4dr SUV turbocharged 210hp 3.0L V6 Diesel
7-speed shiftable automatic AWD		 flat med hvy 10 15 35 40 75 23.7  
2008 4dr SUV turbocharged 215hp 3.0L V6 Diesel
7-speed shiftable automatic AWD		 hills med light 0 0 45 55 71 20.8  
2008 4dr SUV 268-horsepower 3.5L V6
7-speed shiftable automatic AWD		 flat med light 2 34 21 44 74 20.1  
2007 4dr SUV turbocharged 215hp 3.0L V6 Diesel
7-speed shiftable automatic AWD		 flat light light 3 24 27 45 83 25.0  
2007 4dr SUV 268-horsepower 3.5L V6
7-speed shiftable automatic AWD		 flat light none 13 23 38 26 65 16.4  
2006 4dr SUV 302-horsepower 5.0L V8
7-speed shiftable automatic AWD		 flat med none 23 40 18 19 70 15.2  
2006 4dr SUV 268-horsepower 3.5L V6
7-speed shiftable automatic AWD		 flat med light 6 22 24 48 68 20.0  

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

Infiniti FX vs. Mercedes-Benz R-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 Infiniti FX and Mercedes-Benz R-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 Infiniti models and Mercedes-Benz models.

What Our Members Are Saying about the Real Gas Mileage of the Infiniti FX

Infiniti FX Real Gas Mileage: Pros
YearBody/PowertrainComment
2011 4dr SUV 303-horsepower 3.5L V6
7-speed shiftable automatic RWD		 25 mpg on our last trip, cruising between 75-80 mph. see full Infiniti FX review
Infiniti FX Real Gas Mileage: Cons
YearBody/PowertrainComment
2008 4dr SUV 275-horsepower 3.5L V6
5-speed shiftable automatic AWD		 Averaging 18 mpg. Not horrible, but not great either. With gas prices having doubled since the start of my lease, I try and minimize driving outside my commute and necessary errands. see full Infiniti FX review
2004 4dr SUV 315-horsepower 4.5L V8
5-speed shiftable automatic AWD		 18 miles per gallon on average. see full Infiniti FX review
 

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

Mercedes-Benz R-Class Real Gas Mileage: Pros
YearBody/PowertrainComment
2010 4dr SUV turbocharged 210hp 3.0L V6 Diesel
7-speed shiftable automatic AWD		 Excellent. We average 27 on the highway travelling at 70+mph see full Mercedes-Benz R-Class review
2009 4dr SUV 268-horsepower 3.5L V6
7-speed shiftable automatic AWD		 Pleasantly surprised by first tankful. 16.2 mpg in the city. Mostly used "comfort" setting which starts out in 2nd gear and shifts early. With this nonaggressive profile, city driving economy is improved. Premium gives better gas mileage than regular (about 5% on comparable tankfuls). On Comfort setting, no difference in performance is noted. see full Mercedes-Benz R-Class review
2008 4dr SUV 268-horsepower 3.5L V6
7-speed shiftable automatic AWD		 It easily gets to 20 mpg on highway. About 18 on mixed driving see full Mercedes-Benz R-Class review
2007 4dr SUV turbocharged 215hp 3.0L V6 Diesel
7-speed shiftable automatic AWD		 Excellent fuel economy with the diesel, especially when driven gently. Also amazing power at the same time see full Mercedes-Benz R-Class review
2007 4dr SUV 268-horsepower 3.5L V6
7-speed shiftable automatic AWD		 15mpg city....25 mpg highway....combined is around 17-18 mpg. Not bad considering how heavy this car is. Of course i am very light to the pedal trying to keep my mpg high. Gas is too expensive nowadays so if i don't need to be fast, i am keeping it steady. see full Mercedes-Benz R-Class review
2006 4dr SUV 268-horsepower 3.5L V6
7-speed shiftable automatic AWD		 Much better than expected for a very large and long vehicle. Close to 25MPG on longer trips. see full Mercedes-Benz R-Class review
Mercedes-Benz R-Class Real Gas Mileage: Cons
YearBody/PowertrainComment
2007 4dr SUV 268-horsepower 3.5L V6
7-speed shiftable automatic AWD		 15 mpg average. Not good see full Mercedes-Benz R-Class review
2007 4dr SUV 268-horsepower 3.5L V6
7-speed shiftable automatic AWD		 Pretty poor for a 3.5L. see full Mercedes-Benz R-Class review
2007 4dr SUV 302-horsepower 5.0L V8
7-speed shiftable automatic AWD		 F-E is poor because of the weight to power ratio. The vehicle is heavy. With the available power, it is easy to drive faster and to maneuver through slower traffic. Frequent acceleration results in lower gas mileage. see full Mercedes-Benz R-Class review
2006 4dr SUV 268-horsepower 3.5L V6
7-speed shiftable automatic AWD		 I would probably choose a diesel next time for efficiency reasons - but the additional premium fuel required in the V6 is negligible once the car is paid for....soon now. Very lively engine too. I foresee a hybrid R class type vehicle after 2011... see full Mercedes-Benz R-Class review
2006 4dr SUV 302-horsepower 5.0L V8
7-speed shiftable automatic AWD		 only 17 mpg highway see full Mercedes-Benz R-Class review