The down payment is one of the most important decisions in car buying. Put down too little and you'll pay more in interest. Put down too much and you might drain emergency savings. Here's how to find the sweet spot.
Recommended Down Payment Amounts
- New cars: 20% minimum
- Used cars: 10% minimum
- Bad credit: 20-30% recommended
Why 20% Is the Magic Number
New cars depreciate rapidly—about 20% in the first year. A 20% down payment ensures you're never "underwater" (owing more than the car is worth).
How Down Payment Affects Your Loan
Example: $35,000 vehicle at 6% APR for 60 months
| Down Payment | Monthly Payment | Total Interest |
|---|---|---|
| $0 (0%) | $677 | $5,595 |
| $3,500 (10%) | $609 | $5,040 |
| $7,000 (20%) | $542 | $4,480 |
| $10,500 (30%) | $474 | $3,920 |
Sources for Your Down Payment
- Cash savings: Ideal, but don't drain emergency fund
- Trade-in vehicle: Equity counts toward down payment
- Manufacturer rebates: Can sometimes be applied to down payment
When to Put Down More
- Your credit score is below 650
- You're financing for more than 48 months
- The car depreciates faster than average
- You want the lowest possible monthly payment
When It's Okay to Put Down Less
- You have excellent credit (720+) with low APR
- You're buying a car with strong resale value
- You have a short loan term (36-48 months)
- You have other investment opportunities with higher returns
The Danger of Zero Down
With $0 down, you're immediately underwater on your loan. This creates problems if:
- The car is totaled—insurance may not cover the full loan
- You need to sell before the loan is paid off
- You want to trade in before building equity
Rolling Negative Equity
Never roll negative equity from an old loan into a new car purchase. This trap can leave you owing $10,000+ more than your car is worth, making it nearly impossible to escape the cycle.
The Bottom Line
Save for a 20% down payment on new cars, 10% on used. Your monthly payments will be lower, you'll pay less interest, and you'll have more flexibility if your situation changes.
