First Car for a 17 year old girl?
4.6L refers to the displacement of the motor. it refers to the size in liters of the engine, and V8 means that the engine has eight compression cylinders arranged in a "V" pattern with 4 cylinders on each top of the "V". the more cylinders a car has the smoother it will run generally and the engine wont have to work as hard to achieve power. having a lot of power in a car means that is easy to accelerate too quickly or drive too quickly and is why most people do not recommend them for beginning drivers. and i would have to agree. for your first car get an old v6 powered car or a newer 4 cylinder car.
also i wouldnt get that model mustang, it is a kind of lame car. it will be cheaper because of the success of the new design but in my mind it is worth it to pay the extra money.
I recommend a Chevy Cobalt. You can get a well equipped, very low mileage Cobalt for around 15,000, and the majority of used Cobalts will be around 10-14k. i got a used 05 LS with every option for around 14,500 with less then 10,000 miles. on reliability, i have had only one minor problem with the cobalt, caused by its previous owner, with the steering wheel mounted volume controls, but my dealer fixed it for free, so no harm no foul.
it is best to try to get an 07 or later cause that is when GM's 100,000 mile power train warranty started, and if you get an 07 you want the LT model. Cause in 2006 the base-line cobalt was re badged as the LS model and lacks many modern conveniences like cruse control and power windows and locks.
The cobalt is a fantastic car, i pull 31 MPG with the 2.2L engine with an automatic transmission on a regular basis which is pretty decent. Everyone who i know who has driven it loves it, even my friends that hate GM vehicles. it truly is a fantastic car and i think that the cobalt has more personality and passion then a Honda or Toyota.