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Like the Ford Expedition on which it is based, the new Navigator gets a new frame and new four-wheel independent suspension, as well as an extended wheelbase version, dubbed the Navigator L. The longer version of the already massive 'Gator stretches the frame by 14.7 inches, adding an extra 25 cubic feet of cargo space. To keep all that mass on the...

There's big news under the RDX's hood: the first turbocharged engine (other than European-market turbodiesels) for a Honda or Acura street vehicle. The all-new, 2.3-liter i-VTEC turbocharged four-cylinder makes 240 hp and 260 lb-ft of torque and is mated to a five-speed manu-matic transmission with steering wheel mounted paddle shifters. Acura's Super...

Like the RX hybrid, the GS450h represents the top-of-the-line within its ownmodel range and, as such, will boast more standard equipment than non-green versions.Lexus says, however, that since the GS is already "extremely well-equipped,"the difference in spec will be less than that between the RX330 and RX400h. Expect a price premium of at least $5000-$6000...

The lengthening of the wheelbase from 95.4 to 116 inches provides more space not only for passengers--Jeep claims 5 adults can fit comfortably--but cargo as well. With the second row seats folded flat, interior cargo space is an ample 83 cubic feet, beating Toyota FJ Cruiser, Hummer H3 and Nissan Xterra. From the front seats forward the four door...

  The new LS460 and LS460L, which go on sale this fall as 2007 models, will be powered by an all-new, 4.6-liter V-8 producing about 380 hp and 370 lb-ft of torque, figures that compare favorably with those of the new Mercedes 5.5-liter V-8. (Although Lexus clearly wants to beat Mercedes in the gear-count game, it has little desire to enter the...