Learn the ropes
Before visiting a car dealership, learn the basic specifications of a car, configurations, and prices. This will reduce the flood of information that the seller is going to rain down on you, misguiding you by that. And if you have any questions (or new ones will appear) - do not hesitate to ask them directly.
Go behind a dealership
Open and shut the windows, turn on the wipers and lights, adjust the seat as comfortable as possible, turn on the radio. Try all the options for the transformation, sit in the rear seats and examine a trunk compartment. In general, study each button and lever which you will use in the following years.
Be sure to take a test drive. Most often, they are conducted on the streets with a low traffic intensity on a previously planned route. Offer yours - and one that will include good roads, and bad roads, as well as fast and slow ones. To understand everything about a vehicle steerability, application of brakes and speedup, release the brakes a couple of times, accelerate abruptly and try to corner at a speed slightly higher than usual (within reasonable bounds, of course). This will help you to understand the chassis configuration and how does it fit you.
Try all gears and modes
If a car is equipped with a manual transmission, try to put into all gears during the trip to understand how convenient it is for you and how accurately the drive operates. The transmission lever is one of the main controls in the car with the manual transmission. Try all available modes, including sports (if it is) in the car with automatic transmission.
Do not take your family members with you! Very often, sellers begin to exert an inappreciable pressure on those with people you came, which often leads to a successful deal. On the other hand, in the privacy of your own mind, you can without fear or favor assess the need to purchase a car and how much the car meets your requirements.
Don't let interrupt
While driving, respectfully and delicately ask the seller to be silent for a while and answer only your questions, because an experienced salesman can distract you from shortcomings or knock you down from a planned test drive.
Do not forget to ask
Ask the seller as much as possible about all the subtle aspects of the car: operation, maintenance, warranty. Theoretically, try to make a small list of questions and necessary actions in advance, so that you can not forget to ask and do.