Engine: 4.5-liter dohc 32-valve V8

Engine Options: 4.5-liter dohc 32-valve V8

Transmission: 5-speed automatic

Transmission Options: 5-speed automatic with manual mode

Standard Safety Equipment: dual front airbags, dual front side-impact airbags, side curtain airbags, ABS, electronic brake force distribution, Brake Assist, traction control, electronic stability control (VDC), tire monitor, RearView monitor

Optional Safety Equipment: run-flat tires

Basic Warranty: 4 years/60,000 miles

Assembled In: Tochigi, Japan

Model Tested: Infiniti Q45 ($55,900)

Standard Equipment: automatic dual-zone air conditioning with outside temperature display, air filtration system, remote keyless entry, automatic entry/exit system, illuminated entry/exit fade-out system, first-aid kit, xenon high-intensity discharge headlamps, analog clock, power sunroof, 300-watt Bose AM/FM/cassette sound system with dash-mounted six-disc CD changer, 10-way power driver's seat, wood trim, pre-wiring for cellular phone, tire pressure monitor, power windows with express up/down, leather-wrapped steering wheel with wood trim and audio controls, dual power heated mirrors with memory and automatic reverse tilt, full-size spare tire, DVD-based navigation system, active damping suspension with driver-selectable sport mode, RearView video monitor

Options as Tested: Premium Package ($5,800) includes climate controlled front seats, power reclining rear seats with heat, rear-seat audio and climate controls, perforated leather seat inserts, Intelligent Cruise Control with Preview Braking, XM or Sirius satellite radio, rear sunshades, 18-inch alloy wheels, 245/45VR18 all-season performance tires; splash guards ($130)

Destination Charge: 590

Gas Guzzler Tax:

Layout: rear-wheel drive

Horsepower: 340 @ 6400

Torque: 333 @ 4000

Miles Per Gallon in the City/Highway: 17/23

Wheelbase: 113.0 inches

Length/Width/Height in Inches: 200.8/72.6/58.7 inches

Track Front/Rear: 62.6/61.4 inches

Turning Cycle: 36.1 feet

Seating Capacity: 5 people

Head/Hip/Leg Room, f: 38.4/56.5/44.0 inches

Head/Hip/Leg Room, m: inches

Head/Hip/Leg Room, r: 36.4/55.0/37.3 inches

Trunk Volume: 13.6 cubic feet

Payload:

Suspension, f: independent, MacPherson strut, coil springs, active damping, anti-roll bar

Ground Clearance: 5.8 inches

Curb Weight: 4050 pounds

Towing Capacity: pounds

Tires: P245/45VR18

Brakes: vented disc/vented disc, with ABS, EBD, Brake Assist

Fuel Capacity: 21.4 Gallons