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Porsche Boxster vs. Mercury Mariner MPG

Chart is based on 101 fuel economy reports for the Porsche Boxster and 35 fuel economy reports for the Mercury Mariner.

Porsche Boxster MPG

Porsche Boxster Porsche Boxster 2013 20.7 MPG Highway Percentage 80 percent Porsche Boxster Porsche Boxster 2011 16.0 MPG Highway Percentage 50 percent Porsche Boxster Porsche Boxster 2010 20.8 MPG Highway Percentage 38 percent Porsche Boxster Porsche Boxster 2010 24.2 MPG Highway Percentage 75 percent Porsche Boxster Porsche Boxster 2008 21.5 MPG Highway Percentage 27 percent Porsche Boxster Porsche Boxster 2008 21.8 MPG Highway Percentage 3 percent Porsche Boxster Porsche Boxster 2007 25.8 MPG Highway Percentage 80 percent Porsche Boxster Porsche Boxster 2007 16.0 MPG Highway Percentage 4 percent Porsche Boxster Porsche Boxster 2007 26.1 MPG Highway Percentage 55 percent Porsche Boxster Porsche Boxster 2006 21.4 MPG Highway Percentage 63 percent Porsche Boxster Porsche Boxster 2005 22.4 MPG Highway Percentage 48 percent Porsche Boxster Porsche Boxster 2005 16.4 MPG Highway Percentage 75 percent Porsche Boxster Porsche Boxster 2005 25.9 MPG Highway Percentage 70 percent Porsche Boxster Porsche Boxster 2005 25.6 MPG Highway Percentage 50 percent Porsche Boxster Porsche Boxster 2005 24.2 MPG Highway Percentage 43 percent Porsche Boxster Porsche Boxster 2004 20.7 MPG Highway Percentage 48 percent Porsche Boxster Porsche Boxster 2004 25.9 MPG Highway Percentage 80 percent Porsche Boxster Porsche Boxster 2004 21.0 MPG Highway Percentage 25 percent Porsche Boxster Porsche Boxster 2004 25.3 MPG Highway Percentage 47 percent Porsche Boxster Porsche Boxster 2003 21.9 MPG Highway Percentage 38 percent Porsche Boxster Porsche Boxster 2003 26.0 MPG Highway Percentage 50 percent Porsche Boxster Porsche Boxster 2003 28.0 MPG Highway Percentage 50 percent Porsche Boxster Porsche Boxster 2002 23.7 MPG Highway Percentage 47 percent Porsche Boxster Porsche Boxster 2002 29.4 MPG Highway Percentage 40 percent Porsche Boxster Porsche Boxster 2002 18.0 MPG Highway Percentage 51 percent Porsche Boxster Porsche Boxster 2002 23.4 MPG Highway Percentage 64 percent Porsche Boxster Porsche Boxster 2001 21.7 MPG Highway Percentage 52 percent Porsche Boxster Porsche Boxster 2001 22.9 MPG Highway Percentage 35 percent Porsche Boxster Porsche Boxster 2000 22.4 MPG Highway Percentage 55 percent Porsche Boxster Porsche Boxster 2000 29.0 MPG Highway Percentage 30 percent Porsche Boxster Porsche Boxster 2000 25.2 MPG Highway Percentage 38 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 2dr Convertible 315-horsepower 3.4L H6
7-speed automated manual RWD		 flat med hvy 0 20 0 80 70 20.7  
2011 2dr Convertible 255-horsepower 2.9L H6
6-speed manual RWD		 flat med light 0 15 35 50 70 16.0  
2010 2dr Convertible 310-horsepower 3.4L H6
6-speed manual RWD		 flat med none 0 38 25 38 75 20.8  
2010 2dr Convertible 255-horsepower 2.9L H6
7-speed automated manual RWD		 hills med light 5 20 0 75 85 24.2  
2008 2dr Convertible 295-horsepower 3.4L H6
6-speed manual RWD		 flat med none 9 18 47 27 69 21.5  
2008 2dr Convertible 245-horsepower 2.7L H6
5-speed manual RWD		 flat med light 0 50 48 3 75 21.8  
2007 2dr Convertible 295-horsepower 3.4L H6
6-speed manual RWD		 flat med none 1 1 18 80 73 25.8  
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2007 2dr Convertible 245-horsepower 2.7L H6
5-speed shiftable automatic RWD		 flat med none 32 32 32 4 60 16.0  
2007 2dr Convertible 245-horsepower 2.7L H6
5-speed manual RWD		 flat med light 2 3 40 55 62 26.1  
2006 2dr Convertible 280-horsepower 3.2L H6
6-speed manual RWD		 flat lead light 6 11 22 63 65 21.4  
2005 2dr Convertible 280-horsepower 3.2L H6
6-speed manual RWD		 flat med light 9 11 32 48 69 22.4  
2005 2dr Convertible 280-horsepower 3.2L H6
5-speed shiftable automatic RWD		 flat lead hvy 0 25 0 75 80 16.4  
2005 2dr Convertible 240-horsepower 2.7L H6
6-speed manual RWD		 flat med none 10 10 10 70 65 25.9  
2005 2dr Convertible 240-horsepower 2.7L H6
5-speed shiftable automatic RWD		 flat light light 0 5 45 50 65 25.6  
2005 2dr Convertible 240-horsepower 2.7L H6
5-speed manual RWD		 hills med light 12 18 28 43 63 24.2  
2004 2dr Convertible 264-horsepower 3.2L H6
6-speed manual RWD		 flat med light 8 28 18 48 65 20.7  
2004 2dr Convertible 258-horsepower 3.2L H6
6-speed manual RWD		 flat med hvy 0 15 5 80 65 25.9  
2004 2dr Convertible 258-horsepower 3.2L H6
5-speed shiftable automatic RWD		 flat lead hvy 20 30 25 25 70 21.0  
2004 2dr Convertible 228-horsepower 2.7L H6
5-speed manual RWD		 hills med light 1 3 50 47 65 25.3  
2003 2dr Convertible 258-horsepower 3.2L H6
6-speed manual RWD		 hills med none 12 12 38 38 61 21.9  
2003 2dr Convertible 258-horsepower 3.2L H6
5-speed shiftable automatic RWD		 flat med light 0 50 0 50 70 26.0  
2003 2dr Convertible 228-horsepower 2.7L H6
5-speed manual RWD		 flat light none 25 0 25 50 60 28.0  
2002 2dr Convertible 250-horsepower 3.2L H6
6-speed manual RWD		 flat med light 15 15 24 47 65 23.7  
2002 2dr Convertible 250-horsepower 3.2L H6
5-speed shiftable automatic RWD		 flat light light 25 25 10 40 100 29.4  
2002 2dr Convertible 217-horsepower 2.7L H6
5-speed shiftable automatic RWD		 flat med light 10 29 10 51 70 18.0  
2002 2dr Convertible 217-horsepower 2.7L H6
5-speed manual RWD		 hills lead none 3 5 29 64 60 23.4  
2001 2dr Convertible 250-horsepower 3.2L H6
6-speed manual RWD		 hills lead light 13 22 13 52 68 21.7  
2001 2dr Convertible 217-horsepower 2.7L H6
5-speed manual RWD		 flat med none 15 15 35 35 70 22.9  
2000 2dr Convertible 250-horsepower 3.2L H6
6-speed manual RWD		 hills med light 5 17 23 55 93 22.4  
2000 2dr Convertible 217-horsepower 2.7L H6
5-speed shiftable automatic RWD		 flat med none 10 10 50 30 60 29.0  
2000 2dr Convertible 217-horsepower 2.7L H6
5-speed manual RWD		 flat med none 7 23 32 38 70 25.2  

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This page shows only averages. See all the Porsche Boxster fuel economy data.

Mercury Mariner MPG

Mercury Mariner Mercury Mariner 2011 18.9 MPG Highway Percentage 10 percent Mercury Mariner Mercury Mariner 2009 20.6 MPG Highway Percentage 30 percent Mercury Mariner Mercury Mariner 2009 35.5 MPG Highway Percentage 44 percent Mercury Mariner Mercury Mariner 2009 32.3 MPG Highway Percentage 60 percent Mercury Mariner Mercury Mariner 2008 22.0 MPG Highway Percentage 25 percent Mercury Mariner Mercury Mariner 2008 21.4 MPG Highway Percentage 33 percent Mercury Mariner Mercury Mariner 2008 30.8 MPG Highway Percentage 23 percent Mercury Mariner Mercury Mariner 2007 23.4 MPG Highway Percentage 61 percent Mercury Mariner Mercury Mariner 2007 29.8 MPG Highway Percentage 18 percent Mercury Mariner Mercury Mariner 2006 23.1 MPG Highway Percentage 45 percent Mercury Mariner Mercury Mariner 2006 21.5 MPG Highway Percentage 75 percent Mercury Mariner Mercury Mariner 2006 30.6 MPG Highway Percentage 31 percent Mercury Mariner Mercury Mariner 2005 21.0 MPG Highway Percentage 15 percent Mercury Mariner Mercury Mariner 2005 22.3 MPG Highway Percentage 75 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
2011 4dr SUV 240-horsepower 3.0L V6
6-speed automatic FWD		 flat v.lt none 30 30 30 10 60 18.9  
2009 4dr SUV 240-horsepower 3.0L V6
6-speed automatic FWD		 flat light light 20 20 30 30 70 20.6  
2009 4dr SUV 153-horsepower 2.5L I4 Hybrid
CVT FWD		 flat light light 11 13 31 44 60 35.5  
2009 4dr SUV 153-horsepower 2.5L I4 Hybrid
CVT AWD		 flat med light 30 0 10 60 80 32.3  
2008 4dr SUV 200-horsepower 3.0L V6
4-speed automatic FWD		 flat light light 0 45 30 25 70 22.0  
2008 4dr SUV 200-horsepower 3.0L V6
4-speed automatic AWD		 flat light none 0 8 60 33 60 21.4  
2008 4dr SUV 133-horsepower 2.3L I4 Hybrid
CVT AWD		 flat light hvy 5 18 55 23 65 30.8  
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2007 4dr SUV 200-horsepower 3.0L V6
4-speed automatic AWD		 flat light light 0 3 37 61 63 23.4  
2007 4dr SUV 133-horsepower 2.3L I4 Hybrid
CVT AWD		 flat light light 11 16 56 18 70 29.8  
2006 4dr SUV 200-horsepower 3.0L V6
4-speed automatic FWD		 flat light light 8 13 35 45 62 23.1  
2006 4dr SUV 200-horsepower 3.0L V6
4-speed automatic AWD		 flat med light 0 0 25 75 75 21.5  
2006 4dr SUV 133-horsepower 2.3L I4 Hybrid
CVT AWD		 hills light light 16 18 35 31 70 30.6  
2005 4dr SUV 200-horsepower 3.0L V6
4-speed automatic AWD		 flat light light 0 0 85 15 60 21.0  
2005 4dr SUV 153-horsepower 2.3L I4
4-speed automatic AWD		 flat v.lt light 3 13 8 75 67 22.3  

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This page shows only averages. See all the Mercury Mariner fuel economy data.

Porsche Boxster vs. Mercury Mariner 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 Porsche Boxster and Mercury Mariner'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 Porsche models and Mercury models.

What Our Members Are Saying about the Real Gas Mileage of the Porsche Boxster

Porsche Boxster Real Gas Mileage: Pros
YearBody/PowertrainComment
2002 2dr Convertible 217-horsepower 2.7L H6
5-speed shiftable automatic RWD		 mileage with performance see full Porsche Boxster review
2002 2dr Convertible 217-horsepower 2.7L H6
5-speed manual RWD		 Running the hills mostly safe speeds,and an occasional sprint or push through the corners I average 25 mpg/29 hwy.I think on a long boring drive possibly 32mpg see full Porsche Boxster review
 

What Our Members Are Saying about the Real Gas Mileage of the Mercury Mariner

Mercury Mariner Real Gas Mileage: Pros
YearBody/PowertrainComment
2010 0 171-horsepower 2.5L I4
6-speed automatic FWD		 getting 31 mpg highway see full Mercury Mariner review
2009 4dr SUV 171-horsepower 2.5L I4
6-speed automatic FWD		 Has been very good and getting better see full Mercury Mariner review
2009 4dr SUV 240-horsepower 3.0L V6
6-speed automatic FWD		 Coming from a Trailblazer, we like the average of 21-22 MPG in mixed driving, as were used to about 17 MPG. Fuel economy climbs toward the rated 26 MPG the more highway driving we do. see full Mercury Mariner review
2007 4dr SUV 200-horsepower 3.0L V6
4-speed automatic AWD		 For the first almost three years after we got the car, it gave 21+ mpg in town & 24+ mpg on the road. see full Mercury Mariner review
2005 4dr SUV 153-horsepower 2.3L I4
4-speed automatic AWD		 For an SUV with a 4cyl and 4wd I get avg of 22 MPG mixed city and highway. I usually get 23-26 on freeway only. This is good. see full Mercury Mariner review
Mercury Mariner Real Gas Mileage: Cons
YearBody/PowertrainComment
2007 4dr SUV 200-horsepower 3.0L V6
4-speed automatic AWD		 For some reason when new Michelin All Terrain tires with Nitrogen air replaced the Champions from the factory, it plummeted to 17 & 20 mpg. No explanation from Michelin, Costco or Ford/Mercury - they have no idea why. see full Mercury Mariner review