The Ram 1500 is offered with either rear-wheel drive or four-wheel drive in a host of models and configurations. Regular cab trucks seat three across and offer bed lengths in either 76 inches or 96 inches. Quad Cabs feature two smaller rear doors and seat up to six passengers, with only the 76-inch bed available. Crew Cabs feature four full-sized doors, seat six with lots of leg room, and are available with either a 67-inch or 76-inch bed. Within those configurations, several different models are offered: Tradesman, HFE (High Fuel Economy), Express, SLT, Lone Star, Big Horn, Sport, Rebel, Laramie, Laramie Longhorn and Laramie Limited. Regular Cab Tradesman, HFE, Express, SLT, Lone Star and Big Horn models benefit from the PentaStar 305-horsepower 3.6L V6 and 8-speed transmission. This combination is rated at a combined 24 mpg. The 5.7L Hemi V8 makes 395 horsepower and 410 pound-feet of torque and powers Quad Cab models that include the Sport, Laramie Longhorn and Laramie Limited, along with all Crew Cab models. It is also an optional powertrain across most of the model range. A turbocharged 3.0L "EcoDiesel" V6, rated at 240 horsepower and 420 pound-feet of torque, is also available. It leads the class in fuel economy, with a highway EPA rating of 28 mpg. Towing capacity, when properly equipped is a stump-pulling 9,200 pounds. Base Tradesmans come standard with blacked-out grille, front fascia and bumpers, a spray-in bedliner, a Class IV receiver hitch, and Chrysler Uconnect 3.0, which features an LCD display, AM/FM stereo with remote USB, iPod integration and available SiriusXM satellite radio. The Express offers body-color grille, fascia, and bumpers, as well as 20-inch alloy wheels, dual exhaust, fog lamps and Uconnect 3.0. SLT models come with 17-inch alloy wheels, a power rear sliding window in Crew and Quad Cabs and active grille shutters, which close off airflow up front to cut drag and improve fuel economy when cooling isn't needed. Additionally, Uconnect on the SLT includes SiriusXM satellite radio. HFE trim is limited to a 2WD Regular Cab and short bed configuration, and in addition to the SLT features, you'll find an engine stop-start system to improve fuel economy and a tri-fold tonneau cover. Big Horn and Lone Star trims add a leather-wrapped steering wheel 20-inch chrome-clad alloy wheels, overhead console with universal garage door opener, automatic climate control, the Class IV hitch and Uconnect with a 5-inch touchscreen and Bluetooth. Ram Sport models feature 22-inch polished alloy wheels, remote start, an alarm system, smoked bi-functional halogen projector beam headlights, smoked LED taillights and LED interior lighting, a 7-inch instrument cluster and Uconnect 8.4, which includes an 8.4-inch touchscreen, Bluetooth hands-free connectivity, SiriusXM satellite radio and available navigation. Ram Rebel comes standard with Uconnect 8.4 and media hub, automatic dual-zone climate control, an anti-spin differential, alarm system, remote start, and rear park assist with a rearview camera. Finally, Laramie models boast all the bells and whistles found on other trucks in the Ram 1500 lineup, as well as dual-zone automatic climate control, woodgrain interior accents, sapphire blue ambient lighting, a 9-speaker audio system, navigation, rear backup camera, LED bed lighting, Keyless Go, SmartBeam headlights, rain-sensing wipers, and driver seat and pedal memory. Range-topping Laramie Longhorns are exclusive to the Crew Cab bodies and add special badging, real wood interior accents, full-screen navigation, HD radio, premium filigree leather seating, rear backup camera with park assist and a spray-in bedliner. Ram 1500s feature several standard safety features such as crumple zones and side-impact door beams, four-wheel anti-lock brakes, electronic stability control, trailer sway control and front and side-impact airbags.