The 2006 Dodge Ram Pickup 1500 ST 4dr Quad Cab 4WD LB has a 4.7 L, 235 hp V8 engine.  This trim has 4 doors, seats 6, and tows up to 8250 lbs.  In manual, gas mileage comes out to 13 mpg in the city and 17 on the highway.  In automatic, the figures come out to 14 mpg in the city and 17 on the highway.