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GMC Sierra 1500 vs. Infiniti G MPG

Chart is based on 526 fuel economy reports for the GMC Sierra 1500 and 758 fuel economy reports for the Infiniti G.

GMC Sierra 1500 MPG

GMC Sierra 1500 GMC Sierra 1500 2021 24.5 MPG Highway Percentage 50 percent GMC Sierra 1500 GMC Sierra 1500 2018 22.0 MPG Highway Percentage 80 percent GMC Sierra 1500 GMC Sierra 1500 2015 20.9 MPG Highway Percentage 95 percent GMC Sierra 1500 GMC Sierra 1500 2015 18.7 MPG Highway Percentage 55 percent GMC Sierra 1500 GMC Sierra 1500 2014 18.9 MPG Highway Percentage 75 percent GMC Sierra 1500 GMC Sierra 1500 2014 25.0 MPG Highway Percentage 85 percent GMC Sierra 1500 GMC Sierra 1500 2011 16.5 MPG Highway Percentage 60 percent GMC Sierra 1500 GMC Sierra 1500 2011 18.3 MPG Highway Percentage 70 percent GMC Sierra 1500 GMC Sierra 1500 2011 15.2 MPG Highway Percentage 37 percent GMC Sierra 1500 GMC Sierra 1500 2010 15.8 MPG Highway Percentage 40 percent GMC Sierra 1500 GMC Sierra 1500 2010 18.5 MPG Highway Percentage 50 percent GMC Sierra 1500 GMC Sierra 1500 2010 18.0 MPG Highway Percentage 81 percent GMC Sierra 1500 GMC Sierra 1500 2009 17.3 MPG Highway Percentage 68 percent GMC Sierra 1500 GMC Sierra 1500 2009 15.4 MPG Highway Percentage 15 percent GMC Sierra 1500 GMC Sierra 1500 2009 16.8 MPG Highway Percentage 100 percent GMC Sierra 1500 GMC Sierra 1500 2009 17.9 MPG Highway Percentage 47 percent GMC Sierra 1500 GMC Sierra 1500 2008 20.3 MPG Highway Percentage 90 percent GMC Sierra 1500 GMC Sierra 1500 2008 17.0 MPG Highway Percentage 34 percent GMC Sierra 1500 GMC Sierra 1500 2008 17.0 MPG Highway Percentage 42 percent GMC Sierra 1500 GMC Sierra 1500 2008 17.9 MPG Highway Percentage 64 percent GMC Sierra 1500 GMC Sierra 1500 2008 14.0 MPG Highway Percentage 50 percent GMC Sierra 1500 GMC Sierra 1500 2008 22.0 MPG Highway Percentage 90 percent GMC Sierra 1500 GMC Sierra 1500 2008 19.5 MPG Highway Percentage 75 percent GMC Sierra 1500 GMC Sierra 1500 2007 14.1 MPG Highway Percentage 80 percent GMC Sierra 1500 GMC Sierra 1500 2007 17.7 MPG Highway Percentage 27 percent GMC Sierra 1500 GMC Sierra 1500 2007 14.1 MPG Highway Percentage 43 percent GMC Sierra 1500 GMC Sierra 1500 2007 18.1 MPG Highway Percentage 59 percent GMC Sierra 1500 GMC Sierra 1500 2007 16.5 MPG Highway Percentage 74 percent GMC Sierra 1500 GMC Sierra 1500 2007 18.1 MPG Highway Percentage 15 percent GMC Sierra 1500 GMC Sierra 1500 2007 18.4 MPG Highway Percentage 77 percent GMC Sierra 1500 GMC Sierra 1500 2007 16.7 MPG Highway Percentage 30 percent GMC Sierra 1500 GMC Sierra 1500 2006 14.7 MPG Highway Percentage 30 percent GMC Sierra 1500 GMC Sierra 1500 2006 18.5 MPG Highway Percentage 25 percent GMC Sierra 1500 GMC Sierra 1500 2006 15.3 MPG Highway Percentage 25 percent GMC Sierra 1500 GMC Sierra 1500 2006 16.8 MPG Highway Percentage 8 percent GMC Sierra 1500 GMC Sierra 1500 2005 16.0 MPG Highway Percentage 69 percent GMC Sierra 1500 GMC Sierra 1500 2005 17.5 MPG Highway Percentage 0 percent GMC Sierra 1500 GMC Sierra 1500 2005 17.4 MPG Highway Percentage 100 percent GMC Sierra 1500 GMC Sierra 1500 2005 16.2 MPG Highway Percentage 81 percent GMC Sierra 1500 GMC Sierra 1500 2005 19.5 MPG Highway Percentage 80 percent GMC Sierra 1500 GMC Sierra 1500 2003 17.3 MPG Highway Percentage 60 percent GMC Sierra 1500 GMC Sierra 1500 2003 12.5 MPG Highway Percentage 70 percent GMC Sierra 1500 GMC Sierra 1500 2003 16.8 MPG Highway Percentage 70 percent GMC Sierra 1500 GMC Sierra 1500 2001 14.9 MPG Highway Percentage 60 percent GMC Sierra 1500 GMC Sierra 1500 2001 77.8 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 MPG
2021 4dr Crew Cab 6ft bed turbocharged 277hp 3.0L V6 Diesel
10-speed shiftable automatic 4WD w/low range		 flat light light 0 25 25 50 70 24.5  
2018 4dr Crew Cab 5.5ft bed 420-horsepower 6.2L V8
8-speed shiftable automatic 4WD w/low range		 flat light light 0 5 15 80 70 22.0  
2015 4dr Crew Cab 5.5ft bed 420-horsepower 6.2L V8
8-speed shiftable automatic 4WD w/low range		 flat med light 0 5 0 95 65 20.9  
2015 2dr Regular Cab 6.5ft bed 355-horsepower 5.3L V8
6-speed shiftable automatic 4WD w/low range		 flat med none 8 38 0 55 118 18.7  
2014 4dr Crew Cab 5.5ft bed 420-horsepower 6.2L V8
6-speed shiftable automatic 4WD w/low range		 hills med none 0 0 25 75 75 18.9  
2014 4dr Crew Cab 5.5ft bed 355-horsepower 5.3L V8
6-speed shiftable automatic RWD		 flat light hvy 5 10 0 85 63 25.0  
2011 4dr Extended Cab 6.5ft bed 403-horsepower 6.2L V8
6-speed shiftable automatic RWD		 flat med light 5 10 25 60 75 16.5  
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2011 4dr Extended Cab 6.5ft bed 315-horsepower 5.3L V8
6-speed shiftable automatic RWD		 flat med hvy 5 0 25 70 60 18.3  
2011 4dr Extended Cab 6.5ft bed 302-horsepower 4.8L V8
4-speed automatic 4WD, part-time w/low range		 hills light none 3 18 42 37 70 15.2  
2010 4dr Extended Cab 6.5ft bed 315-horsepower 5.3L V8
6-speed shiftable automatic 4WD w/low range		 flat light light 10 35 15 40 71 15.8  
2010 4dr Crew Cab 5.5ft bed 403-horsepower 6.2L V8
6-speed shiftable automatic AWD		 hills med light 0 25 25 50 60 18.5  
2010 2dr Regular Cab 6.5ft bed 302-horsepower 4.8L V8
4-speed automatic RWD		 flat med light 18 1 0 81 68 18.0  
2009 4dr Extended Cab 6.5ft bed 367-horsepower 6.0L V8
6-speed shiftable automatic 4WD w/low range		 flat med none 3 8 23 68 63 17.3  
2009 4dr Extended Cab 6.5ft bed 315-horsepower 5.3L V8
4-speed automatic 4WD, part-time w/low range		 hills med none 5 80 0 15 75 15.4  
2009 4dr Crew Cab 5.5ft bed 367-horsepower 6.0L V8
6-speed shiftable automatic 4WD w/low range		 flat light hvy 0 0 0 100 110 16.8  
2009 4dr Crew Cab 5.5ft bed 315-horsepower 5.3L V8
6-speed shiftable automatic 4WD w/low range		 flat light light 8 28 17 47 65 17.9  
2008 4dr Extended Cab 6.5ft bed 315-horsepower 5.3L V8
4-speed automatic RWD		 flat light light 0 10 0 90 100 20.3  
2008 4dr Extended Cab 6.5ft bed 315-horsepower 5.3L V8
4-speed automatic 4WD w/low range		 hills light light 17 22 27 34 60 17.0  
2008 4dr Extended Cab 5.5ft bed 315-horsepower 5.3L V8
4-speed automatic 4WD w/low range		 hills light light 0 33 25 42 70 17.0  
2008 4dr Crew Cab 5.5ft bed 315-horsepower 5.3L V8
4-speed automatic 4WD w/low range		 flat light none 9 0 27 64 60 17.9  
2008 4dr Crew Cab 5.5ft bed 295-horsepower 4.8L V8
4-speed automatic 4WD, part-time w/low range		 hills lead none 18 0 33 50 115 14.0  
2008 2dr Regular Cab 8ft bed 295-horsepower 4.8L V8
4-speed automatic RWD		 flat light light 0 0 10 90 65 22.0  
2008 2dr Regular Cab 6.5ft bed 195-horsepower 4.3L V6
4-speed automatic RWD		 flat light none 5 10 10 75 60 19.5  
2007 4dr Extended Cab 6.5ft bed 367-horsepower 6.0L V8
4-speed automatic 4WD w/low range		 hills light light 0 10 10 80 60 14.1  
2007 4dr Extended Cab 6.5ft bed 315-horsepower 5.3L V8
4-speed automatic RWD		 flat light light 12 37 25 27 75 17.7  
2007 4dr Extended Cab 6.5ft bed 315-horsepower 5.3L V8
4-speed automatic 4WD w/low range		 flat med light 5 0 53 43 70 14.1  
2007 4dr Crew Cab 5.5ft bed 367-horsepower 6.0L V8
4-speed automatic RWD		 flat med light 5 30 7 59 70 18.1  
2007 4dr Crew Cab 5.5ft bed 367-horsepower 6.0L V8
4-speed automatic 4WD w/low range		 flat med none 23 3 0 74 75 16.5  
2007 4dr Crew Cab 5.5ft bed 315-horsepower 5.3L V8
4-speed automatic 4WD, part-time w/low range		 flat light light 10 30 45 15 60 18.1  
2007 4dr Crew Cab 5.5ft bed 315-horsepower 5.3L V8
4-speed automatic 4WD w/low range		 flat light none 4 10 9 77 66 18.4  
2007 4dr Crew Cab 5.5ft bed 295-horsepower 4.8L V8
4-speed automatic RWD		 flat med light 5 65 0 30 60 16.7  
2006 4dr Extended Cab 6.5ft bed 295-horsepower 5.3L V8
4-speed automatic 4WD w/low range		 flat light none 30 20 20 30 100 14.7  
2006 4dr Extended Cab 5.5ft bed 295-horsepower 5.3L V8
4-speed automatic RWD		 flat light light 10 40 25 25 65 18.5  
2006 4dr Crew Cab 5.5ft bed 345-horsepower 6.0L V8
4-speed automatic AWD		 flat med none 5 20 50 25 65 15.3  
2006 4dr Crew Cab 5.5ft bed 310-horsepower 5.3L V8
4-speed automatic 4WD, part-time w/low range		 flat light none 2 80 10 8 70 16.8  
2005 4dr Extended Cab 6.5ft bed 310-horsepower 5.3L V8
4-speed automatic 4WD w/low range		 flat light light 7 11 13 69 62 16.0  
2005 4dr Extended Cab 6.5ft bed 295-horsepower 5.3L V8
4-speed automatic 4WD w/low range		 flat med hvy 4 8 88 0 N/A 17.5  
2005 4dr Extended Cab 6.5ft bed 285-horsepower 4.8L V8
4-speed automatic 4WD w/low range		 flat light light 0 0 0 100 110 17.4  
2005 4dr Crew Cab 5.5ft bed 295-horsepower 5.3L V8
4-speed automatic 4WD w/low range		 hills light light 0 10 10 81 68 16.2  
2005 2dr Regular Cab 6.5ft bed 285-horsepower 4.8L V8
4-speed automatic RWD		 flat med hvy 0 2 18 80 65 19.5  
2003 4dr Extended Cab 6.5ft bed 285-horsepower 5.3L V8
4-speed automatic RWD		 flat light light 13 13 13 60 60 17.3  
2003 4dr Extended Cab 6.5ft bed 285-horsepower 5.3L V8
4-speed automatic 4WD, part-time w/low range		 hills v.lt none 0 20 10 70 100 12.5  
2003 4dr Extended Cab 6.5ft bed 285-horsepower 5.3L V8
4-speed automatic 4WD w/low range		 flat light none 0 10 20 70 60 16.8  
2001 4dr Extended Cab 6.5ft bed 285-horsepower 5.3L V8
4-speed automatic 4WD, part-time w/low range		 flat med none 0 40 0 60 70 14.9  
2001 2dr Regular Cab 6.5ft bed 270-horsepower 4.8L V8
4-speed automatic RWD		 flat med light 0 40 0 60 110 77.8  

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This page shows only averages. See all the GMC Sierra 1500 fuel economy data.

Infiniti G MPG

Infiniti G Infiniti G 2013 22.1 MPG Highway Percentage 72 percent Infiniti G Infiniti G 2013 17.2 MPG Highway Percentage 41 percent Infiniti G Infiniti G 2012 25.6 MPG Highway Percentage 100 percent Infiniti G Infiniti G 2012 23.7 MPG Highway Percentage 70 percent Infiniti G Infiniti G 2011 20.8 MPG Highway Percentage 42 percent Infiniti G Infiniti G 2011 21.0 MPG Highway Percentage 49 percent Infiniti G Infiniti G 2011 25.7 MPG Highway Percentage 75 percent Infiniti G Infiniti G 2010 25.3 MPG Highway Percentage 68 percent Infiniti G Infiniti G 2010 22.3 MPG Highway Percentage 52 percent Infiniti G Infiniti G 2010 23.0 MPG Highway Percentage 58 percent Infiniti G Infiniti G 2010 18.0 MPG Highway Percentage 5 percent Infiniti G Infiniti G 2010 25.6 MPG Highway Percentage 70 percent Infiniti G Infiniti G 2009 23.2 MPG Highway Percentage 58 percent Infiniti G Infiniti G 2009 18.6 MPG Highway Percentage 31 percent Infiniti G Infiniti G 2009 24.5 MPG Highway Percentage 91 percent Infiniti G Infiniti G 2009 20.6 MPG Highway Percentage 33 percent Infiniti G Infiniti G 2009 15.0 MPG Highway Percentage 10 percent Infiniti G Infiniti G 2009 19.5 MPG Highway Percentage 58 percent Infiniti G Infiniti G 2009 20.4 MPG Highway Percentage 70 percent Infiniti G Infiniti G 2009 20.7 MPG Highway Percentage 48 percent Infiniti G Infiniti G 2008 20.9 MPG Highway Percentage 62 percent Infiniti G Infiniti G 2008 20.5 MPG Highway Percentage 34 percent Infiniti G Infiniti G 2008 19.1 MPG Highway Percentage 49 percent Infiniti G Infiniti G 2008 20.6 MPG Highway Percentage 35 percent Infiniti G Infiniti G 2008 19.6 MPG Highway Percentage 40 percent Infiniti G Infiniti G 2007 21.0 MPG Highway Percentage 37 percent Infiniti G Infiniti G 2007 21.0 MPG Highway Percentage 49 percent Infiniti G Infiniti G 2007 18.5 MPG Highway Percentage 47 percent Infiniti G Infiniti G 2007 18.5 MPG Highway Percentage 50 percent Infiniti G Infiniti G 2007 11.3 MPG Highway Percentage 5 percent Infiniti G Infiniti G 2006 21.1 MPG Highway Percentage 43 percent Infiniti G Infiniti G 2006 20.0 MPG Highway Percentage 48 percent Infiniti G Infiniti G 2006 20.7 MPG Highway Percentage 55 percent Infiniti G Infiniti G 2006 20.2 MPG Highway Percentage 40 percent Infiniti G Infiniti G 2006 21.1 MPG Highway Percentage 56 percent Infiniti G Infiniti G 2005 24.0 MPG Highway Percentage 55 percent Infiniti G Infiniti G 2005 19.0 MPG Highway Percentage 30 percent Infiniti G Infiniti G 2005 19.0 MPG Highway Percentage 44 percent Infiniti G Infiniti G 2005 21.2 MPG Highway Percentage 26 percent Infiniti G Infiniti G 2005 22.9 MPG Highway Percentage 46 percent Infiniti G Infiniti G 2004 23.3 MPG Highway Percentage 60 percent Infiniti G Infiniti G 2004 20.9 MPG Highway Percentage 60 percent Infiniti G Infiniti G 2004 19.3 MPG Highway Percentage 41 percent Infiniti G Infiniti G 2004 18.9 MPG Highway Percentage 38 percent Infiniti G Infiniti G 2004 18.3 MPG Highway Percentage 21 percent Infiniti G Infiniti G 2004 19.0 MPG Highway Percentage 43 percent Infiniti G Infiniti G 2004 20.0 MPG Highway Percentage 70 percent Infiniti G Infiniti G 2003 24.5 MPG Highway Percentage 68 percent Infiniti G Infiniti G 2003 20.8 MPG Highway Percentage 47 percent Infiniti G Infiniti G 2003 18.1 MPG Highway Percentage 35 percent Infiniti G Infiniti G 2003 21.0 MPG Highway Percentage 49 percent Infiniti G Infiniti G 2003 24.7 MPG Highway Percentage 85 percent Infiniti G Infiniti G 2002 28.7 MPG Highway Percentage 20 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 4dr Sedan 328-horsepower 3.7L V6
7-speed shiftable automatic RWD		 flat med light 3 13 13 72 69 22.1  
2013 4dr Sedan 328-horsepower 3.7L V6
7-speed shiftable automatic AWD		 flat med none 26 27 5 41 65 17.2  
2012 4dr Sedan 328-horsepower 3.7L V6
7-speed shiftable automatic RWD		 flat light light 0 0 0 100 75 25.6  
2012 4dr Sedan 218-horsepower 2.5L V6
7-speed shiftable automatic AWD		 flat light none 0 30 0 70 60 23.7  
2011 4dr Sedan 328-horsepower 3.7L V6
7-speed shiftable automatic RWD		 flat light light 9 24 25 42 66 20.8  
2011 4dr Sedan 328-horsepower 3.7L V6
7-speed shiftable automatic AWD		 flat med light 2 2 46 49 74 21.0  
2011 4dr Sedan 218-horsepower 2.5L V6
7-speed shiftable automatic RWD		 flat med light 3 2 21 75 74 25.7  
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2010 4dr Sedan 328-horsepower 3.7L V6
7-speed shiftable automatic RWD		 flat med light 8 17 8 68 106 25.3  
2010 4dr Sedan 328-horsepower 3.7L V6
7-speed shiftable automatic AWD		 flat med none 3 12 33 52 72 22.3  
2010 4dr Sedan 328-horsepower 3.7L V6
6-speed manual RWD		 flat med light 7 28 7 58 73 23.0  
2010 2dr Hardtop conv. 325-horsepower 3.7L V6
7-speed shiftable automatic RWD		 flat lead none 5 10 80 5 60 18.0  
2010 2dr Coupe 330-horsepower 3.7L V6
7-speed shiftable automatic AWD		 flat med none 4 13 13 70 80 25.6  
2009 4dr Sedan 328-horsepower 3.7L V6
7-speed shiftable automatic RWD		 flat med light 13 19 10 58 69 23.2  
2009 4dr Sedan 328-horsepower 3.7L V6
7-speed shiftable automatic AWD		 flat med light 6 30 34 31 63 18.6  
2009 4dr Sedan 328-horsepower 3.7L V6
6-speed manual RWD		 flat light light 0 9 0 91 70 24.5  
2009 2dr Hardtop conv. 325-horsepower 3.7L V6
7-speed shiftable automatic RWD		 flat lead hvy 17 33 17 33 75 20.6  
2009 2dr Hardtop conv. 325-horsepower 3.7L V6
6-speed manual RWD		 flat lead none 10 10 70 10 70 15.0  
2009 2dr Coupe 330-horsepower 3.7L V6
7-speed shiftable automatic RWD		 flat med light 10 20 12 58 73 19.5  
2009 2dr Coupe 330-horsepower 3.7L V6
7-speed shiftable automatic AWD		 flat light light 10 10 10 70 61 20.4  
2009 2dr Coupe 330-horsepower 3.7L V6
6-speed manual RWD		 hills med none 2 26 24 48 67 20.7  
2008 4dr Sedan 306-horsepower 3.5L V6
6-speed manual RWD		 flat med hvy 5 14 20 62 79 20.9  
2008 4dr Sedan 306-horsepower 3.5L V6
5-speed shiftable automatic RWD		 flat med light 10 23 33 34 73 20.5  
2008 4dr Sedan 306-horsepower 3.5L V6
5-speed shiftable automatic AWD		 flat light light 12 14 26 49 68 19.1  
2008 2dr Coupe 330-horsepower 3.7L V6
6-speed manual RWD		 flat light light 1 11 53 35 71 20.6  
2008 2dr Coupe 330-horsepower 3.7L V6
5-speed shiftable automatic RWD		 flat lead light 9 29 22 40 74 19.6  
2007 4dr Sedan 306-horsepower 3.5L V6
6-speed manual RWD		 flat med light 10 29 24 37 68 21.0  
2007 4dr Sedan 306-horsepower 3.5L V6
5-speed shiftable automatic RWD		 flat med light 10 19 23 49 71 21.0  
2007 4dr Sedan 306-horsepower 3.5L V6
5-speed shiftable automatic AWD		 flat med light 7 20 27 47 79 18.5  
2007 2dr Coupe 293-horsepower 3.5L V6
6-speed manual RWD		 flat med none 5 25 20 50 70 18.5  
2007 2dr Coupe 275-horsepower 3.5L V6
5-speed shiftable automatic RWD		 flat lead hvy 0 93 3 5 70 11.3  
2006 4dr Sedan 298-horsepower 3.5L V6
6-speed manual RWD		 flat med none 13 17 27 43 72 21.1  
2006 4dr Sedan 280-horsepower 3.5L V6
5-speed shiftable automatic RWD		 flat med light 9 24 18 48 69 20.0  
2006 4dr Sedan 280-horsepower 3.5L V6
5-speed shiftable automatic AWD		 flat light light 5 16 24 55 71 20.7  
2006 2dr Coupe 298-horsepower 3.5L V6
6-speed manual RWD		 flat med light 8 29 23 40 65 20.2  
2006 2dr Coupe 280-horsepower 3.5L V6
5-speed shiftable automatic RWD		 flat med light 7 16 21 56 69 21.1  
2005 4dr Sedan 298-horsepower 3.5L V6
6-speed manual RWD		 flat med light 5 20 20 55 60 24.0  
2005 4dr Sedan 280-horsepower 3.5L V6
5-speed shiftable automatic RWD		 hills med light 2 20 48 30 65 19.0  
2005 4dr Sedan 280-horsepower 3.5L V6
5-speed shiftable automatic AWD		 flat med none 10 31 15 44 85 19.0  
2005 2dr Coupe 298-horsepower 3.5L V6
6-speed manual RWD		 flat med light 8 24 42 26 70 21.2  
2005 2dr Coupe 280-horsepower 3.5L V6
5-speed shiftable automatic RWD		 flat light none 7 28 19 46 69 22.9  
2004 4dr Sedan 280-horsepower 3.5L V6
6-speed manual RWD		 flat light none 12 16 12 60 98 23.3  
2004 4dr Sedan 260-horsepower 3.5L V6
6-speed manual RWD		 flat med light 4 21 15 60 66 20.9  
2004 4dr Sedan 260-horsepower 3.5L V6
5-speed shiftable automatic RWD		 flat med light 17 31 10 41 68 19.3  
2004 4dr Sedan 260-horsepower 3.5L V6
5-speed shiftable automatic AWD		 flat light none 11 21 30 38 67 18.9  
2004 2dr Coupe 280-horsepower 3.5L V6
6-speed manual RWD		 flat med light 12 36 31 21 66 18.3  
2004 2dr Coupe 280-horsepower 3.5L V6
5-speed shiftable automatic RWD		 flat med none 28 18 10 43 63 19.0  
2004 2dr Coupe 260-horsepower 3.5L V6
5-speed shiftable automatic RWD		 flat med none 10 10 10 70 60 20.0  
2003 4dr Sedan 260-horsepower 3.5L V6
6-speed manual RWD		 hills light hvy 0 19 14 68 71 24.5  
2003 4dr Sedan 260-horsepower 3.5L V6
5-speed shiftable automatic RWD		 flat med light 9 15 29 47 85 20.8  
2003 2dr Coupe 280-horsepower 3.5L V6
6-speed manual RWD		 flat med light 11 28 26 35 92 18.1  
2003 2dr Coupe 280-horsepower 3.5L V6
5-speed shiftable automatic RWD		 flat med light 5 23 23 49 70 21.0  
2003 2dr Coupe 260-horsepower 3.5L V6
5-speed shiftable automatic RWD		 flat light none 5 5 5 85 100 24.7  
2002 4dr Sedan 145-horsepower 2.0L I4
5-speed manual RWD		 flat v.lt none 5 10 65 20 65 28.7  

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

GMC Sierra 1500 vs. Infiniti G 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 Sierra 1500 and Infiniti G'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.

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See TrueDelta's information for all GMC models and Infiniti models.

What Our Members Are Saying about the Real Gas Mileage of the GMC Sierra 1500

GMC Sierra 1500 Real Gas Mileage: Pros
YearBody/PowertrainComment
2004 4dr Extended Cab 6.5ft bed 295-horsepower 5.3L V8
4-speed automatic 4WD w/low range		 Its great. see full GMC Sierra 1500 review
GMC Sierra 1500 Real Gas Mileage: Cons
YearBody/PowertrainComment
2006 4dr Extended Cab 6.5ft bed 295-horsepower 5.3L V8
4-speed automatic 4WD w/low range		 Fuel economy is a suggestion - the truck, like all trucks, gets mediocre fuel economy. see full GMC Sierra 1500 review
 

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

Infiniti G Real Gas Mileage: Pros
YearBody/PowertrainComment
2007 4dr Sedan 306-horsepower 3.5L V6
5-speed shiftable automatic AWD		 My average for the life of the car is 21MPG. Not too bad for a car with this power and my lead foot. see full Infiniti G review
Infiniti G Real Gas Mileage: Cons
YearBody/PowertrainComment
2013 4dr Sedan 328-horsepower 3.7L V6
7-speed shiftable automatic RWD		 Can live with it because of the performance, but wish the mileage was better and premium fuel was not required. see full Infiniti G review
2013 4dr Sedan 328-horsepower 3.7L V6
7-speed shiftable automatic AWD		 What the powertrain giveth, the fuel economy taketh away. Nissan's VQ engines just seem to be thirsty - if you commute in heavy traffic, especially for short trips, don't be surprised at 15.5-16 mpg tanks. I don't know what mostly-highway commuting would look like, but maybe 22-25 mpg depending on driving style. see full Infiniti G review
2010 4dr Sedan 328-horsepower 3.7L V6
7-speed shiftable automatic AWD		 To be honest, it is exactly what I expected, so no real beefs with it. That said, if you are looking for a car that gets better than 19 or so combined, this is not it. Decent freeway miles (24-27/g) but in city it is hard to beat 16/g. see full Infiniti G review
2010 4dr Sedan 328-horsepower 3.7L V6
7-speed shiftable automatic AWD		 Fuel economy is poor - about 19 MPG average. see full Infiniti G review
2009 2dr Coupe 330-horsepower 3.7L V6
7-speed shiftable automatic RWD		 You do not buy a performance car and expect to get good gas mileage. At a 5 mpg or greater difference from my last car, it is taking some getting used too. see full Infiniti G review
2009 2dr Coupe 330-horsepower 3.7L V6
7-speed shiftable automatic AWD		 average 18 in town 24 highway. see full Infiniti G review
2009 4dr Sedan 328-horsepower 3.7L V6
7-speed shiftable automatic AWD		 With such a large displaced engine and so much power you will find that you will have so-so mpg if you drive mainly in the city like I do. Especially if you are a "spirited" driver like I tend to be. I am averaging about 14-16mpg 95% city. On the highway its a different story. I have averaged up to 28mpg @ 78mph, I kind of wish I drove more on the highway. see full Infiniti G review
2008 4dr Sedan 306-horsepower 3.5L V6
6-speed manual RWD		 While not terrible, ~20mpg is by no means phenomenal. Relatively comparable cars get ~23-27mpg, but typically also have smaller engines which explains a good portion of the difference. see full Infiniti G review
2008 4dr Sedan 306-horsepower 3.5L V6
5-speed shiftable automatic AWD		 Takes a lot of fuel... 14L/100km about. see full Infiniti G review
2008 4dr Sedan 306-horsepower 3.5L V6
5-speed shiftable automatic RWD		 Not too great. My average is 19 - 20 mpg, mostly city. see full Infiniti G review