Here are some tips on how to get the best discount while purchasing a car:

1. Research the car you want to buy - Look up the MSRP (Manufacturer's Suggested Retail Price) of the car and any available discounts or incentives offered by the manufacturer.

2. Compare prices from multiple dealerships - Reach out to several dealerships in your area to get quotes on the car you want to buy. Compare these quotes to find the best price.

3. Negotiate the price - Once you have a few quotes, try negotiating with the salesperson to see if they can offer you a lower price. Be prepared to walk away if the salesperson is unwilling to negotiate.

4. Consider financing options - Some dealerships offer financing incentives, such as low-interest rates or cashback offers. Compare these offers to see if they can save you money in the long run.

5. Check for additional discounts - Some dealerships offer additional discounts for things like military service, recent college graduates, or loyalty to a certain brand.

6. Be willing to walk away - If you're not happy with the price or the deal, be prepared to walk away. There are always other dealerships and cars available.

By following these tips, you can increase your chances of getting the best possible discount when purchasing a car. Remember to do your research, negotiate, and be prepared to walk away if necessary.