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Saturday, February 3, 2007

4 X 4 &/or AWD

4-wheel drive (4wd)
The 4wd gives the driver the option of driving in 4wd or two-wheel drive (2wd). These vehicles can be basically a front wheel drive (fwd) or rear wheel drive (rwd). Some also, in addition to the fwd/2wd option, have a high and low range option.

All-wheel drive (awd)
The awd vehicles do not have an option of 4wd or 2wd. They are in 4wd at all times and transfer power to the wheels with the most traction through a viscous clutch.

Most manufacturers offer both types in some of their product lines.

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