Car Research

Mercedes-Benz is touting three new SUVs as the world's cleanest diesel automobiles. (Glen Woodcock/AUTONET)
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the ML 320 has been given the most extensive facelift of the three, inside and out. (Glen Woodcock/AUTONET)
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The 2009 ML320, GL320 and R320 will be available with the same 3.0-litre V6 diesel that has powered the E320 Bluetec sedan for the past two years. (Glen Woodcock/AUTONET)
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The ML320 cabin is not only luxurious, but extremely quiet. (Glen Woodcock/AUTONET)
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Coupled to a seven-speed automatic transmission, the Bluetec is smooth and extremely powerful, with the kind of torque only a diesel engine can generate. (Glen Woodcock/AUTONET)
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The ML320 is an SUV even Al Gore might love. (Glen Woodcock/AUTONET)
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