One mistake many people make when looking for a black ford mustang gt is that they believe going to a dealership is absolutely risk free. Many people believe that buying their Mustang directly from the showroom floor means that they are guaranteed a perfect car. Sadly that is not always the case. Before you walked into that dealership there is no telling what was going on with that car. Many dealerships use the lot as their own personal car rental service driving cars when it suits them or even letting friends and family drive them occasionally. A few extra miles on that black ford mustang for sale that has caught your eye can easily be explained away by normal transportation and trips to and from the car wash.
Even if the vehicle you are planning to buy has not been driven by everyone that works at the dealership it could have been sitting around without moving for a surprising amount of time. The mustang you might be planning to buy could have easily sat out in the cold all winter and you would have no way of knowing. It is important that you carefully examine your mustang before you even consider making an offer for it so that you can be completely satisfied with what you are buying.
If you do not know much about the black ford mustang gt that you are interested in find someone that does know a lot about mustangs. There are many mustang fans that have a surprising amount of knowledge about the average mustang features. Taking someone to the dealership with you who knows the way mustangs work and what is supposed to be under the hood will save you a lot of money. Many mustang enthusiasts know the various mustang models and what they should cost. They will be able to keep you from over paying for a basic Mustang and might even be able to help you get an upgraded Mustang for the same price you were willing to pay for a basic mustang.
Lastly, when you are making the final decision to purchase that black ford mustang gt that you have been examining make sure that it comes with a great warranty. Since most mustangs can be driven hard and maintain well over time most dealerships have no problems offering good extended coverage. Some do this because it is standard practice and some are generous with insurance on mustangs because they know they will not have to make many repairs. If the warranty you are offered only covers a few parts of the car, is for a very short term, or is non-existent you might want to consider another dealership. If the car dealership is not willing to over a warranty a new or mostly new Mustang they might be trying to high a major flaw that would be expensive for them to repair.