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BMW Z4 vs. Porsche Boxster Fuel Economy (km/L)

Chart is based on 87 fuel economy reports for the BMW Z4 and 101 fuel economy reports for the Porsche Boxster.

BMW Z4 km/L

BMW Z4 BMW Z4 2011 53.7 MPG Highway Percentage 45 percent BMW Z4 BMW Z4 2010 56.5 MPG Highway Percentage 20 percent BMW Z4 BMW Z4 2010 58.0 MPG Highway Percentage 77 percent BMW Z4 BMW Z4 2009 8.3 MPG Highway Percentage 19 percent BMW Z4 BMW Z4 2009 62.3 MPG Highway Percentage 55 percent BMW Z4 BMW Z4 2008 64.4 MPG Highway Percentage 100 percent BMW Z4 BMW Z4 2008 10.3 MPG Highway Percentage 80 percent BMW Z4 BMW Z4 2008 70.0 MPG Highway Percentage 75 percent BMW Z4 BMW Z4 2007 47.0 MPG Highway Percentage 42 percent BMW Z4 BMW Z4 2007 62.5 MPG Highway Percentage 69 percent BMW Z4 BMW Z4 2007 62.7 MPG Highway Percentage 47 percent BMW Z4 BMW Z4 2007 42.4 MPG Highway Percentage 27 percent BMW Z4 BMW Z4 2007 60.3 MPG Highway Percentage 25 percent BMW Z4 BMW Z4 2007 72.0 MPG Highway Percentage 70 percent BMW Z4 BMW Z4 2006 66.3 MPG Highway Percentage 25 percent BMW Z4 BMW Z4 2006 62.8 MPG Highway Percentage 50 percent BMW Z4 BMW Z4 2006 41.5 MPG Highway Percentage 20 percent BMW Z4 BMW Z4 2006 63.5 MPG Highway Percentage 55 percent BMW Z4 BMW Z4 2006 59.3 MPG Highway Percentage 32 percent BMW Z4 BMW Z4 2006 58.2 MPG Highway Percentage 55 percent BMW Z4 BMW Z4 2005 66.0 MPG Highway Percentage 75 percent BMW Z4 BMW Z4 2005 50.3 MPG Highway Percentage 43 percent BMW Z4 BMW Z4 2005 54.1 MPG Highway Percentage 20 percent BMW Z4 BMW Z4 2004 63.1 MPG Highway Percentage 21 percent BMW Z4 BMW Z4 2004 63.5 MPG Highway Percentage 67 percent BMW Z4 BMW Z4 2004 68.5 MPG Highway Percentage 10 percent BMW Z4 BMW Z4 2003 64.1 MPG Highway Percentage 53 percent BMW Z4 BMW Z4 2003 63.0 MPG Highway Percentage 20 percent BMW Z4 BMW Z4 2003 60.2 MPG Highway Percentage 40 percent BMW Z4 BMW Z4 2003 80.9 MPG Highway Percentage 68 percent BMW Z4 BMW Z4 2003 55.8 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 km/L
2011 2dr Hardtop conv. turbocharged 335hp 3.0L I6
7-speed automated manual RWD		 hills med light 0 20 35 45 70 53.7  
2010 2dr Hardtop conv. turbocharged 300hp 3.0L I6
7-speed automated manual RWD		 flat med light 5 15 60 20 80 56.5  
2010 2dr Hardtop conv. turbocharged 300hp 3.0L I6
6-speed manual RWD		 flat lead light 3 0 20 77 72 58.0  
2009 2dr Hardtop conv. turbocharged 300hp 3.0L I6
7-speed automated manual RWD		 hills med hvy 10 5 67 19 120 8.3  
2009 2dr Hardtop conv. 255-horsepower 3.0L I6
6-speed shiftable automatic RWD		 flat med hvy 9 9 27 55 70 62.3  
2008 2dr Hatch 330-horsepower 3.2L I6
6-speed manual RWD		 flat light light 0 0 0 100 73 64.4  
2008 2dr Convertible 255-horsepower 3.0L I6
6-speed shiftable automatic RWD		 flat light none 0 10 10 80 100 10.3  
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2008 2dr Convertible 215-horsepower 3.0L I6
6-speed shiftable automatic RWD		 flat med hvy 17 3 6 75 75 70.0  
2007 2dr Hatch 330-horsepower 3.2L I6
6-speed manual RWD		 flat med none 8 22 28 42 65 47.0  
2007 2dr Hatch 255-horsepower 3.0L I6
6-speed shiftable automatic RWD		 flat lead light 8 15 8 69 68 62.5  
2007 2dr Hatch 255-horsepower 3.0L I6
6-speed manual RWD		 flat med light 12 16 25 47 72 62.7  
2007 2dr Convertible 330-horsepower 3.2L I6
6-speed manual RWD		 flat lead none 50 17 7 27 75 42.4  
2007 2dr Convertible 255-horsepower 3.0L I6
6-speed manual RWD		 flat med light 7 22 47 25 60 60.3  
2007 2dr Convertible 215-horsepower 3.0L I6
6-speed shiftable automatic RWD		 flat light hvy 1 4 25 70 70 72.0  
2006 2dr Hatch 255-horsepower 3.0L I6
6-speed shiftable automatic RWD		 flat light none 0 15 60 25 70 66.3  
2006 2dr Hatch 255-horsepower 3.0L I6
6-speed manual RWD		 flat med light 10 10 30 50 65 62.8  
2006 2dr Convertible 330-horsepower 3.2L I6
6-speed manual RWD		 flat med none 8 46 25 20 78 41.5  
2006 2dr Convertible 255-horsepower 3.0L I6
6-speed shiftable automatic RWD		 flat med hvy 0 0 45 55 60 63.5  
2006 2dr Convertible 255-horsepower 3.0L I6
6-speed manual RWD		 flat med light 2 28 38 32 70 59.3  
2006 2dr Convertible 215-horsepower 3.0L I6
6-speed manual RWD		 flat med light 7 13 25 55 74 58.2  
2005 2dr Convertible 225-horsepower 3.0L I6
5-speed shiftable automatic RWD		 hills med light 1 1 23 75 65 66.0  
2005 2dr Convertible 184-horsepower 2.5L I6
5-speed shiftable automatic RWD		 flat lead hvy 15 25 18 43 60 50.3  
2005 2dr Convertible 184-horsepower 2.5L I6
5-speed manual RWD		 hills light none 10 40 30 20 65 54.1  
2004 2dr Convertible 225-horsepower 3.0L I6
6-speed manual RWD		 flat med none 4 20 55 21 67 63.1  
2004 2dr Convertible 184-horsepower 2.5L I6
5-speed shiftable automatic RWD		 flat med hvy 0 0 33 67 70 63.5  
2004 2dr Convertible 184-horsepower 2.5L I6
5-speed manual RWD		 flat light none 0 10 80 10 65 68.5  
2003 2dr Convertible 225-horsepower 3.0L I6
6-speed manual RWD		 flat med light 8 8 30 53 70 64.1  
2003 2dr Convertible 225-horsepower 3.0L I6
6-speed automated manual RWD		 flat light light 10 20 50 20 60 63.0  
2003 2dr Convertible 225-horsepower 3.0L I6
5-speed shiftable automatic RWD		 flat med light 20 20 20 40 60 60.2  
2003 2dr Convertible 184-horsepower 2.5L I6
6-speed automated manual RWD		 flat light light 8 5 20 68 70 80.9  
2003 2dr Convertible 184-horsepower 2.5L I6
5-speed manual RWD		 flat med none 2 7 31 60 77 55.8  

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This page shows only averages. See all the BMW Z4 fuel economy data.

Porsche Boxster km/L

Porsche Boxster Porsche Boxster 2013 48.7 MPG Highway Percentage 80 percent Porsche Boxster Porsche Boxster 2011 37.6 MPG Highway Percentage 50 percent Porsche Boxster Porsche Boxster 2010 49.0 MPG Highway Percentage 38 percent Porsche Boxster Porsche Boxster 2010 82.0 MPG Highway Percentage 75 percent Porsche Boxster Porsche Boxster 2008 50.5 MPG Highway Percentage 27 percent Porsche Boxster Porsche Boxster 2008 27.8 MPG Highway Percentage 3 percent Porsche Boxster Porsche Boxster 2007 60.7 MPG Highway Percentage 80 percent Porsche Boxster Porsche Boxster 2007 37.6 MPG Highway Percentage 4 percent Porsche Boxster Porsche Boxster 2007 61.4 MPG Highway Percentage 55 percent Porsche Boxster Porsche Boxster 2006 50.4 MPG Highway Percentage 63 percent Porsche Boxster Porsche Boxster 2005 52.7 MPG Highway Percentage 48 percent Porsche Boxster Porsche Boxster 2005 38.6 MPG Highway Percentage 75 percent Porsche Boxster Porsche Boxster 2005 60.9 MPG Highway Percentage 70 percent Porsche Boxster Porsche Boxster 2005 60.2 MPG Highway Percentage 50 percent Porsche Boxster Porsche Boxster 2005 56.9 MPG Highway Percentage 43 percent Porsche Boxster Porsche Boxster 2004 48.6 MPG Highway Percentage 48 percent Porsche Boxster Porsche Boxster 2004 60.9 MPG Highway Percentage 80 percent Porsche Boxster Porsche Boxster 2004 49.4 MPG Highway Percentage 25 percent Porsche Boxster Porsche Boxster 2004 59.5 MPG Highway Percentage 47 percent Porsche Boxster Porsche Boxster 2003 51.6 MPG Highway Percentage 38 percent Porsche Boxster Porsche Boxster 2003 61.2 MPG Highway Percentage 50 percent Porsche Boxster Porsche Boxster 2003 65.9 MPG Highway Percentage 50 percent Porsche Boxster Porsche Boxster 2002 55.9 MPG Highway Percentage 47 percent Porsche Boxster Porsche Boxster 2002 12.5 MPG Highway Percentage 40 percent Porsche Boxster Porsche Boxster 2002 42.4 MPG Highway Percentage 51 percent Porsche Boxster Porsche Boxster 2002 55.2 MPG Highway Percentage 64 percent Porsche Boxster Porsche Boxster 2001 51.0 MPG Highway Percentage 52 percent Porsche Boxster Porsche Boxster 2001 53.8 MPG Highway Percentage 35 percent Porsche Boxster Porsche Boxster 2000 26.5 MPG Highway Percentage 55 percent Porsche Boxster Porsche Boxster 2000 68.2 MPG Highway Percentage 30 percent Porsche Boxster Porsche Boxster 2000 59.2 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 km/L
2013 2dr Convertible 315-horsepower 3.4L H6
7-speed automated manual RWD		 flat med hvy 0 20 0 80 70 48.7  
2011 2dr Convertible 255-horsepower 2.9L H6
6-speed manual RWD		 flat med light 0 15 35 50 70 37.6  
2010 2dr Convertible 310-horsepower 3.4L H6
6-speed manual RWD		 flat med none 0 38 25 38 75 49.0  
2010 2dr Convertible 255-horsepower 2.9L H6
7-speed automated manual RWD		 hills med light 5 20 0 75 85 82.0  
2008 2dr Convertible 295-horsepower 3.4L H6
6-speed manual RWD		 flat med none 9 18 47 27 69 50.5  
2008 2dr Convertible 245-horsepower 2.7L H6
5-speed manual RWD		 flat med light 0 50 48 3 75 27.8  
2007 2dr Convertible 295-horsepower 3.4L H6
6-speed manual RWD		 flat med none 1 1 18 80 73 60.7  
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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 37.6  
2007 2dr Convertible 245-horsepower 2.7L H6
5-speed manual RWD		 flat med light 2 3 40 55 62 61.4  
2006 2dr Convertible 280-horsepower 3.2L H6
6-speed manual RWD		 flat lead light 6 11 22 63 65 50.4  
2005 2dr Convertible 280-horsepower 3.2L H6
6-speed manual RWD		 flat med light 9 11 32 48 69 52.7  
2005 2dr Convertible 280-horsepower 3.2L H6
5-speed shiftable automatic RWD		 flat lead hvy 0 25 0 75 80 38.6  
2005 2dr Convertible 240-horsepower 2.7L H6
6-speed manual RWD		 flat med none 10 10 10 70 65 60.9  
2005 2dr Convertible 240-horsepower 2.7L H6
5-speed shiftable automatic RWD		 flat light light 0 5 45 50 65 60.2  
2005 2dr Convertible 240-horsepower 2.7L H6
5-speed manual RWD		 hills med light 12 18 28 43 63 56.9  
2004 2dr Convertible 264-horsepower 3.2L H6
6-speed manual RWD		 flat med light 8 28 18 48 65 48.6  
2004 2dr Convertible 258-horsepower 3.2L H6
6-speed manual RWD		 flat med hvy 0 15 5 80 65 60.9  
2004 2dr Convertible 258-horsepower 3.2L H6
5-speed shiftable automatic RWD		 flat lead hvy 20 30 25 25 70 49.4  
2004 2dr Convertible 228-horsepower 2.7L H6
5-speed manual RWD		 hills med light 1 3 50 47 65 59.5  
2003 2dr Convertible 258-horsepower 3.2L H6
6-speed manual RWD		 hills med none 12 12 38 38 61 51.6  
2003 2dr Convertible 258-horsepower 3.2L H6
5-speed shiftable automatic RWD		 flat med light 0 50 0 50 70 61.2  
2003 2dr Convertible 228-horsepower 2.7L H6
5-speed manual RWD		 flat light none 25 0 25 50 60 65.9  
2002 2dr Convertible 250-horsepower 3.2L H6
6-speed manual RWD		 flat med light 15 15 24 47 65 55.9  
2002 2dr Convertible 250-horsepower 3.2L H6
5-speed shiftable automatic RWD		 flat light light 25 25 10 40 100 12.5  
2002 2dr Convertible 217-horsepower 2.7L H6
5-speed shiftable automatic RWD		 flat med light 10 29 10 51 70 42.4  
2002 2dr Convertible 217-horsepower 2.7L H6
5-speed manual RWD		 hills lead none 3 5 29 64 60 55.2  
2001 2dr Convertible 250-horsepower 3.2L H6
6-speed manual RWD		 hills lead light 13 22 13 52 68 51.0  
2001 2dr Convertible 217-horsepower 2.7L H6
5-speed manual RWD		 flat med none 15 15 35 35 70 53.8  
2000 2dr Convertible 250-horsepower 3.2L H6
6-speed manual RWD		 hills med light 5 17 23 55 93 26.5  
2000 2dr Convertible 217-horsepower 2.7L H6
5-speed shiftable automatic RWD		 flat med none 10 10 50 30 60 68.2  
2000 2dr Convertible 217-horsepower 2.7L H6
5-speed manual RWD		 flat med none 7 23 32 38 70 59.2  

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

BMW Z4 vs. Porsche Boxster Fuel Economy (km/L)

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 Z4 and Porsche Boxster's where a car was driven. So you can get an idea of their real-world km/L based on how and where you drive a car.

See TrueDelta's information for all Hatchbacks and Convertibles.
See TrueDelta's information for all BMW models and Porsche models.

What Our Members Are Saying about the Real Gas Mileage of the BMW Z4

BMW Z4 Real Gas Mileage: Pros
YearBody/PowertrainComment
2007 2dr Hatch 255-horsepower 3.0L I6
6-speed manual RWD		 it gets better fuel economy than the M coupe, but still out performs the 2.5i and 3.0i models. see full BMW Z4 review
2007 2dr Convertible 215-horsepower 3.0L I6
6-speed shiftable automatic RWD		 Fuel economy is great. Getting 30 to 33 mpg on trips on 2 lane rural highways at 65 to 70 mph. see full BMW Z4 review
2006 2dr Convertible 215-horsepower 3.0L I6
6-speed manual RWD		 Around town I get about 23 mpg but on the open highway, get 30 to 32 mpg which is huge since the Z only uses premium grade gas. see full BMW Z4 review
2004 2dr Convertible 225-horsepower 3.0L I6
6-speed manual RWD		 Average 26-27mpg combined city/highway in daily commuter driving (no expressway)...even with some spirited driving. see full BMW Z4 review
BMW Z4 Real Gas Mileage: Cons
YearBody/PowertrainComment
2007 2dr Hatch 330-horsepower 3.2L I6
6-speed manual RWD		 City driving only about 17 MPG; highway driving 21 MPG see full BMW Z4 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