The first thing you have to do is to decide which type of vehicle you want and how much money you want to spend. Look at your needs and your budget, and then set a maximum amount of money that you want to spend. This way you do not waste time looking at time looking at cars you can't afford.
It is a good idea to research how vehicles rate against one another in areas such as the price, safety, reliability, gas mileage, etc. (Comparative tests are commonly found on-line, in automotive magazines, and there are plenty of books available on this subject). Ask yourself what you need the vehicle for.
Don't buy a car with a huge trunk just because you go on a summer vacation for a week or a big truck or sport utility vehicle just to tow a trailer once a year. You could rent a car for those occasions and it would be much cheaper. Think of what you usually use your car for. Do not buy for special occasions.
Consider a larger vehicle if you are concerned about traffic safety. Large vehicles are heavier, longer and have more space in the passenger compartment. Airbags can't make up for the difference in size. When a tiny vehicle collides with a big one, the tiny vehicle gets it the worst.
The downside of large vehicles is the higher price and the poor fuel economy. Take your time and figure out what you want and do not forget that the most important aspect is that you should like the vehicle you choose.
Everyone wants a new car, but nowadays many used models are nothing to scoff at. You want to buy a vehicle and you feel confused. Maybe you don't have a car, your present car is old and unreliable, or you want something safer and more economical. Perhaps you just want a change. Whatever the reason, you still must decide between buying new or buying used.