Engine: 5.9-Liter High Output Cummins Turbo Diesel I-6

Engine Options: 345-hp 5.7-liter ohv 16-valve V8; 5.9-liter Cummins Turbo Diesel

Transmission: four-speed automatic

Transmission Options: 5-speed automatic; 6-speed manual; 4-speed automatic

Standard Safety Equipment: dual front multi-stage airbags, three-point belts in all seating positions with constant-force retractors, LATCH child-seat anchors, child-protection rear door locks; four-wheel ABS

Optional Safety Equipment: side-curtain airbags for front and rear seats

Basic Warranty: 3 years/50,000 miles

Assembled In: Saltillo, Coahuila, Mexico

Model Tested: Dodge Ram Mega Cab 3500 Laramie 4x4 ($47,695)

Standard Equipment: leather upholstery, dual-zone climate control, steering-wheel-mounted audio controls, heated front seats, security alarm, auto-dimming rearview mirror, Sentry Key engine immobilizer; overhead console with mini trip computer and compass, cruise control, power windows and door locks, keyless entry, four-wheel disc brakes with four-wheel ABS; part-time manual shift transfer case

Options as Tested: side airbags ($490); 4-speed automatic transmission ($1,095); bucket seats ($490); navigation radio ($1,595); anti-spin differential; clearance lamps ($80); tow hooks ($50); skid plate for transfer case ($45); trailer mirrors ($100)

Destination Charge: 900

Gas Guzzler Tax:

Layout: four-wheel drive

Horsepower: 325 @ 2900

Torque: 610 @ 1600

Miles Per Gallon in the City/Highway:

Wheelbase: 160.3 inches

Length/Width/Height in Inches: 247.7/80.0/78.7 inches

Track Front/Rear: 69.5/68.2 inches

Turning Cycle: 49.7 feet

Seating Capacity: 6 people

Head/Hip/Leg Room, f: 40.8/64.9/41.0 inches

Head/Hip/Leg Room, m: inches

Head/Hip/Leg Room, r: 40.5/64.6/44.2 inches

Trunk Volume: cubic feet

Payload: 2430

Suspension, f: live axle, five-link track bar, coil springs, stabilizer bar, gas-charged mono-tube shock absorbers

Ground Clearance: 7.7 inches

Curb Weight: 5486 pounds

Towing Capacity: 15,400 pounds

Tires: P265/70R17

Brakes: disc/disc with four-wheel ABS

Fuel Capacity: 35.0 Gallons