Additionally, finding a less costly car will reduce the amount you need to borrow, and it may be easier to get approved for a smaller loan amount than a larger one. Benefits of Good Credit When Buying a Car. The benefit of a good credit score when buying a vehicle is that you may secure lower interest rates compared to consumers with poor credit. Now, consider the difference if that same person bought a car before buying a home. If the car payment is $500 per month, that brings their total monthly debt payments to $950. That substantially lowers their buying power when looking at homes. It's unlikely this person would qualify for a mortgage with a monthly payment more than $555. 3. The least discounted months to buy a car are January through April. On average, according to Edmunds, the month of February brings the smallest discounts off of MSRP, with an average discount of 5.7%. Many people ask about the best time to buy a truck on Reddit and also when is the best time to buy a truck in Canada It’s an enormous financial commitment to buy a new car.. Whether you are looking for a fuel-efficient sedan for yourself or a certified pre-owned SUV for a second family car, Consumer Reports can lead you through the car buying experience. Below, we.