When shopping at a CarMax store, simply tell a sales associate that you'd like to take the car of your choice for a 24-hour test drive. You’ll be asked to provide a valid driver's license, verifiable comprehensive and collision coverage, and to return the car to the same store on the next business day. Please note, there is a 150-mile limit for 24-hour test drives and the car’s condition must remain consistent with when it left the store.
Most private sellers aren't as experienced in negotiating as dealers, nor do they want to negotiate as car dealerships do. Use this to your advantage and make a fair but aggressive offer. If the seller turns it down, be persistent and counter with a slightly higher amount. Remember, it might be OK to spend a little more than you'd hoped if you found the perfect used car.
There's a big safety benefit to buying the newest car you can afford. When you buy a new car, you're ensuring you're getting a car that's up to the most recent safety standards in both crash testing and in safety technology. A new car compared to a used car from even five years ago can have big safety advantages with things like more airbags, a more rigid construction, and more advanced technology like a backup camera which is now mandatory on every new car sold in the U.S.