Because its a Jeep. You're driving a tent on wheels with the aerodynamics of a brick. Plus add in over sized tires and bad driving habits, you will get even worse gas mileage.
The 2002 Jeep Wrangler's engine produces 140 ft-lbs. @ 3500 rpm.
19 gallons
I got one from Oreilly for 79 bucks
The Jeep Wrangler 2011 models start at a price of $22,045.00 for a Jeep Wrangler Sport. A Jeep Wrangler Sport S starts at $24,245, Jeep Wrangler Sahara starts at $27,745.00, Jeep Wrangler Sahara 70th Anniversary starts at $29,055.00, a Jeep Wrangler Mojave starts around $29,775.00, and the most expensive Jeep is the Jeep Wrangler Rubicon that starts at around $29,820.00.
in Australia it is $37,990
The 2010 Jeep Wrangler's engine produces 240 ft-lbs. @ 4000 rpm.
The 2012 Jeep Wrangler's engine produces 260 ft-lbs. @ 4800 rpm.
The 2013 Jeep Wrangler's engine produces 260 ft-lbs. @ 4800 rpm.
The 2009 Jeep Wrangler's engine produces 237 ft-lbs. @ 4000 rpm.
The 2003 Jeep Wrangler's engine produces 165 ft-lbs. @ 4000 rpm.
The 2011 Jeep Wrangler's engine produces 237 ft-lbs. @ 4000 rpm.
The 2007 Jeep Wrangler's engine produces 240 ft-lbs. @ 4000 rpm.