If you are in the market for a used car, a great way to tell if the speedometer is correct is to look at the gas and brake pedals. If someone says the car has 30,000 miles on it, Effuel Reviews
and the brake and gas pedals are worn, it is a good indication the odometer was turned back.
Consider selling your car privately, rather than trading it in for the new car you want. You will almost always get more for your car through a private sale than you would through a trade in. Even if the dealership makes it sound like they are giving you a great trade in value, they will likely raise the price somewhere else to make up for the difference.
Take a look at owner reviews before selecting the car you want to buy. These can be found online, at many different websites. Owner reviews give you a good idea about how much others enjoy the car, and if they would recommend it to friends and family. They offer a different perspective than professional reviews, and they are very informative for anyone who is car shopping.