Here's how all-wheel drive (AWD) or four-wheel drive (4WD) work, their pros and cons and when they're most useful. Many, or all, of the products featured on this page are from our advertising partners ...

Four-wheel-drive (4WD) and all-wheel-drive (AWD) drivelines provide the highest levels of traction for driving in changeable weather conditions or off-road. 4WD vehicles allow manual engagement of the ...

While many may be concerned about big mechanical items going wrong — like the engine and transmission — the transfer case is also a critical component to keep an eye on in four-wheel-drive (4WD) and ...