When it comes to buying a new car, one of the most important parts of the process is the test drive. A test drive can tell you a lot about a car, including how it handles and whether or not it’s right for your family. The following are some of the test drive secrets you need to know.

First, you always want to start your test drive with a car with a cold engine. Not only do you want to see for yourself how well the car starts when the engine is cold, but it will be easier to check under the car’s hood while the engine is still cold. If the engine isn’t cold when it’s time to start the test drive, offer to come back at another time. Unscrupulous sellers could warm up an engine, knowing that it doesn’t run as smoothly when it’s cold. An honest seller will understand that you want to see the engine’s cold starting capabilities for yourself.

Another thing you must do during your test drive is check for any signs of damage. Look for signs that the car may have been damaged and repaired. Be sure to also check for evidence of flooding. Look at the interior thoroughly and inspect the car’s trunk as well. If you find any signs of mildew or mold in a car, pass on the car. And keep in mind that any seller who doesn’t want you to thoroughly inspect the car may be hiding something.

In addition to test driving the car, you’ll want to have your own mechanic inspect the car. Any reputable seller will be fine with this. Ask if you can take the car to your mechanic or, if you have to, bring your mechanic to the car. Most sellers will allow you to take the car to your mechanic, so again, beware any seller who seems reluctant to have the car independently inspected.

At some dealerships, the car salesperson will insist on driving you around for the test drive – but don’t give in! Insist on driving the car yourself. After all, you’re the person making the decision about the car. You’ll need to drive the car on regular streets in stop and go traffic and on the highway. Notice how well the car accelerates on the highway and whether the ride is smooth and steady. Notice how much road noise you hear and how much noise comes from the car itself. Does the car have enough speed to pass when needed? And does it come to a complete stop smoothly without any grinding noises?

It’s also a good idea to get some street driving in after the highway driving. Does the car run differently after being on the highway? Take left turns and right turns. How does the car respond? Does the car make noises when turning?

You’ll also want to check the car’s brakes to be sure everything is in good working order. An empty parking lot along your test drive route is a good place to try braking sharply.

Once you’re back at the dealership, make sure the heater and the air conditioner works. Let the air conditioner run for a while to make sure the engine doesn’t overheat. Turn off the car and then crank it again a few times to make sure it cranks well when warm. Finally, let the engine idle for at least five minutes to make sure it continues to run well while idling. Once you’ve completed all these steps, you should have enough information to make a good decision about the car you’re considering.