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GMC Envoy vs. Porsche Boxster MPG

Chart is based on 33 fuel economy reports for the GMC Envoy and 101 fuel economy reports for the Porsche Boxster.

GMC Envoy MPG

GMC Envoy GMC Envoy 2009 17.0 MPG Highway Percentage 30 percent GMC Envoy GMC Envoy 2008 18.1 MPG Highway Percentage 43 percent GMC Envoy GMC Envoy 2008 17.1 MPG Highway Percentage 43 percent GMC Envoy GMC Envoy 2007 10.5 MPG Highway Percentage 90 percent GMC Envoy GMC Envoy 2007 14.3 MPG Highway Percentage 65 percent GMC Envoy GMC Envoy 2006 17.0 MPG Highway Percentage 50 percent GMC Envoy GMC Envoy 2006 16.2 MPG Highway Percentage 35 percent GMC Envoy GMC Envoy 2006 16.6 MPG Highway Percentage 38 percent GMC Envoy GMC Envoy 2005 16.6 MPG Highway Percentage 25 percent GMC Envoy GMC Envoy 2005 21.8 MPG Highway Percentage 100 percent GMC Envoy GMC Envoy 2005 15.2 MPG Highway Percentage 42 percent GMC Envoy GMC Envoy 2004 16.0 MPG Highway Percentage 30 percent GMC Envoy GMC Envoy 2004 17.7 MPG Highway Percentage 0 percent GMC Envoy GMC Envoy 2003 15.0 MPG Highway Percentage 10 percent GMC Envoy GMC Envoy 2003 18.5 MPG Highway Percentage 45 percent GMC Envoy GMC Envoy 2003 16.6 MPG Highway Percentage 30 percent GMC Envoy GMC Envoy 2002 18.6 MPG Highway Percentage 75 percent GMC Envoy GMC Envoy 2002 16.5 MPG Highway Percentage 60 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
2009 4dr SUV 285-horsepower 4.2L I6
4-speed automatic RWD		 flat med none 10 30 30 30 70 17.0  
2008 4dr SUV 285-horsepower 4.2L I6
4-speed automatic RWD		 flat med none 11 36 10 43 70 18.1  
2008 4dr SUV 285-horsepower 4.2L I6
4-speed automatic 4WD w/low range		 flat light light 5 15 38 43 58 17.1  
2007 4dr SUV 302-horsepower 5.3L V8
4-speed automatic 4WD w/low range		 flat light none 0 5 5 90 100 10.5  
2007 4dr SUV 291-horsepower 4.2L I6
4-speed automatic 4WD w/low range		 flat light none 5 15 15 65 60 14.3  
2006 4dr SUV 300-horsepower 5.3L V8
4-speed automatic RWD		 flat light hvy 0 25 25 50 60 17.0  
2006 4dr SUV 291-horsepower 4.2L I6
4-speed automatic RWD		 flat light hvy 10 20 35 35 60 16.2  
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2006 4dr SUV 291-horsepower 4.2L I6
4-speed automatic 4WD w/low range		 flat light none 6 45 13 38 88 16.6  
2005 4dr SUV, ext. 300-horsepower 5.3L V8
4-speed automatic 4WD w/low range		 flat med hvy 35 20 20 25 70 16.6  
2005 4dr SUV 275-horsepower 4.2L I6
4-speed automatic RWD		 mtns light light 0 0 0 100 70 21.8  
2005 4dr SUV 275-horsepower 4.2L I6
4-speed automatic 4WD w/low range		 hills med none 19 26 14 42 58 15.2  
2004 4dr SUV, ext. 275-horsepower 4.2L I6
4-speed automatic 4WD w/low range		 hills lead none 5 30 35 30 75 16.0  
2004 4dr SUV 275-horsepower 4.2L I6
4-speed automatic 4WD w/low range		 hills light light 33 17 50 0 0 17.7  
2003 4dr SUV, ext. 290-horsepower 5.3L V8
4-speed automatic 4WD w/low range		 flat med light 1 50 39 10 60 15.0  
2003 4dr SUV 290-horsepower 5.3L V8
4-speed automatic RWD		 flat light light 3 13 38 45 63 18.5  
2003 4dr SUV 275-horsepower 4.2L I6
4-speed automatic 4WD w/low range		 flat med light 10 33 27 30 63 16.6  
2002 4dr SUV 270-horsepower 4.2L I6
4-speed automatic RWD		 flat light light 0 5 20 75 70 18.6  
2002 4dr SUV 270-horsepower 4.2L I6
4-speed automatic 4WD w/low range		 flat light light 20 15 5 60 65 16.5  

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This page shows only averages. See all the GMC Envoy fuel economy data.

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.

GMC Envoy vs. Porsche Boxster 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 GMC Envoy and Porsche Boxster'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 GMC models and Porsche models.

What Our Members Are Saying about the Real Gas Mileage of the GMC Envoy

GMC Envoy Real Gas Mileage: Cons
YearBody/PowertrainComment
2003 4dr SUV 275-horsepower 4.2L I6
4-speed automatic 4WD w/low range		 I average about 16 MPG in town and 20 on free way on a good day (depends on trafic and road altitude changes, sometimes it was better than 20mpg). see full GMC Envoy review
2002 4dr SUV 270-horsepower 4.2L I6
4-speed automatic 4WD w/low range		 I cannot seem to get above 16 mpg. I wish I had better fuel economy. see full GMC Envoy review
2002 4dr SUV 270-horsepower 4.2L I6
4-speed automatic 4WD w/low range		 Stinks for a 6 cylinder. see full GMC Envoy review
 

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