Whether you’re in the market for a SUV, pickup, or car, you’ve probably come across this question at one point or another: What’s the difference between 4WD and AWD? Both distribute power to all four wheels of a standard vehicle, as opposed to the standard front- or rear-wheel drive of 2WD vehicles. The power of the added system could be beneficial if you live in a place where you are driving in mud and snow. Many consumers, however, don’t know what the difference between the two is.
Even though they cost more, 4WD and AWD could save you
While a vehicle with either of the two systems is more expensive than a two-wheel drive vehicle, you’re less likely to find yourself stranded on the road during less-than-optimal driving conditions, whether caused by weather or environment. Get more auto loans for a safer 4-wheel drive care or get something less: the choice is the buyer’s. You can get help choosing between 4WD and AWD by the summary from How Stuff Works below.
4WD only part time – throw the switch when it’s needed
In attempting to answer what’s the difference between 4WD and AWD, start with part-time 4WD. This is the basic way 4WD is offered; there is a switch that switched between 2WD and 4WD. Excessive mechanical wear can be avoided as long as 4WD is avoided on pavement. Some vehicles in this class have a basic 2WD/4WD toggle, and some have added options like 4WD High and 4WD Low (the latter and should only be used in extreme off-road scenarios). Newer part-time 4WD vehicles allow the driver to make a shift from 2WD to 4WD High while the car is moving but must be stopped before moving from 2WD to 4WD Low. Older part-time 4WD vehicles must be stopped before any such shift can occur. If you will only be using 4WD occasionally, then part time 4WD is the best choice for you. Frequent changes in the driving conditions that would mean a constant switch between 2WD and 4WD are both inconvenient for the driver and add a lot of wear and tear on the drive train.
When you want to keep it running – full time 4WD
This is a more advanced form of 4WD that can be left on without placing undue strain on the drive train. High and Low settings are available, as well as an automatic 4WD. With most vehicles, shifting from high to low while in 4WD will mean the vehicle needs to be completely stopped. Drivers who tend to drive under adverse situations more often can avoid the tedious 2WD/4WD switching and go with this full-time 4WD option.
No switch with AWD-4WD
All-wheel drive sends power to all wheels of the vehicle in a similar fashion to four-wheel drive vehicles, but a 2WD switch is typically not present. AWD locks the vehicles axles and automatically feeds power to all wheels on slippery roads. Most AWD vehicles are great for slippery roadway conditions, but are not intended for rugged off-road excursions. Certain AWD vehicles such as the Dodge Durango and Toyota 4Runner will offer a low-gear AWD setting that allows for tougher roads. AWD usually doesn’t add much weight to the car and is good for any weather condition.
Which is safer – 4WD or AWD?
Both are supposed better than 2WD but How Stuff Works says: that doesn’t mean 4WD and AWD are automatically safer. Drivers should keep in mind that while 4WD and AWD help acceleration, they do not help with cornering and braking. On wet, snowy roads, it matters little whether you have a 4WD, AWD or 2WD vehicle when it comes to maneuvering and stopping. Having good brakes, having a fine suspension, and using the right set of ties will be more important.
Article Sources
How Stuff Works
http://consumerguideauto.howstuffworks.com/your-ride-4wd-vs-awd-cga.htm
