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Buick Regal vs. Mercedes-Benz R-Class MPG

Chart is based on 30 fuel economy reports for the Buick Regal and 37 fuel economy reports for the Mercedes-Benz R-Class.

Buick Regal MPG

Buick Regal Buick Regal 2016 31.8 MPG Highway Percentage 90 percent Buick Regal Buick Regal 2015 26.4 MPG Highway Percentage 80 percent Buick Regal Buick Regal 2014 27.5 MPG Highway Percentage 50 percent Buick Regal Buick Regal 2012 16.8 MPG Highway Percentage 5 percent Buick Regal Buick Regal 2011 25.6 MPG Highway Percentage 64 percent Buick Regal Buick Regal 2011 26.7 MPG Highway Percentage 65 percent Buick Regal Buick Regal 2011 26.3 MPG Highway Percentage 58 percent Buick Regal Buick Regal 2004 24.6 MPG Highway Percentage 53 percent Buick Regal Buick Regal 2002 21.4 MPG Highway Percentage 50 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
2016 4dr Sedan turbocharged 259hp 2.0L I4
6-speed shiftable automatic FWD		 flat light none 7 0 3 90 75 31.8  
2015 4dr Sedan turbocharged 259hp 2.0L I4
6-speed shiftable automatic FWD		 flat med light 1 9 10 80 75 26.4  
2014 4dr Sedan turbocharged 259hp 2.0L I4
6-speed shiftable automatic FWD		 flat med none 0 10 40 50 75 27.5  
2012 4dr Sedan 182-horsepower 2.4L I4 Hybrid
6-speed shiftable automatic FWD		 flat light none 0 95 0 5 70 16.8  
2011 4dr Sedan turbocharged 220hp 2.0L I4
6-speed shiftable automatic FWD		 flat med none 3 13 19 64 85 25.6  
2011 4dr Sedan turbocharged 220hp 2.0L I4
6-speed manual FWD		 flat med none 1 28 6 65 105 26.7  
2011 4dr Sedan 182-horsepower 2.4L I4
6-speed shiftable automatic FWD		 hills med light 2 7 33 58 68 26.3  
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2004 4dr Sedan 200-horsepower 3.8L V6
4-speed automatic FWD		 flat med light 0 16 32 53 60 24.6  
2002 4dr Sedan 200-horsepower 3.8L V6
4-speed automatic FWD		 flat med light 50 0 0 50 120 21.4  

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This page shows only averages. See all the Buick Regal 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.

Buick Regal 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 Buick Regal 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 Sedans, Hatchbacks, and Wagons.
See TrueDelta's information for all Buick models and Mercedes-Benz models.

TrueDelta Reviews the Real Gas Mileage of the Buick Regal

Buick Regal Real Gas Mileage: Cons
YearComment
2011 The Buick Regal and Chrysler 200 both weigh substantially more than just about any other front-wheel-drive midsize sedan. Add all-wheel-drive, and both weigh nearly two tons. Curb weight is the enemy of fuel economy. The Buick's turbocharged four-cylinder engine is more efficient than the Chrysler's V6, so it has an edge in the EPA's city test, 19 vs. 18 mpg. But the Chrysler's automatic transmission has three extra gears, for a total of nine, so it has the edge on the EPA's highway test, 29 vs. 27 mpg. The Ford Fusion, though far from light, has an edge over both: 22 mpg city, 31 mpg highway. see full Buick Regal review
 

What Our Members Are Saying about the Real Gas Mileage of the Buick Regal

Buick Regal Real Gas Mileage: Pros
YearBody/PowertrainComment
2014 4dr Sedan turbocharged 259hp 2.0L I4
6-speed shiftable automatic FWD		 Good mileage, 30-35 mpg on highway. see full Buick Regal review
Buick Regal Real Gas Mileage: Cons
YearBody/PowertrainComment
2012 4dr Sedan turbocharged 270hp 2.0L I4
6-speed manual FWD		 For being a turbo 4, I expected slightly better MPG (I average 26mpg mixed with premium). When adding in the Trifecta Performance tune on the car, I average around 29mpg, with the added HP/TQ. What gives, GM? Uncage this beast! see full Buick Regal review
2011 4dr Sedan 182-horsepower 2.4L I4
6-speed shiftable automatic FWD		 City EPA mileage was lower than I would expect for a four cylinder--should easily best 20 vice 19. see full Buick Regal review
2003 4dr Sedan 200-horsepower 3.8L V6
4-speed automatic FWD		 It gets 22 in town, 25 on the highway. see full Buick Regal 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