Free preview · from the dealership side of the desk
Ask ten people how much to put down on a car and most will say “20%.” At 2026 prices, with the average new car selling for a little over $50,000 according to Kelley Blue Book, that means about $10,000 in cash before taxes and fees. Many buyers don’t have it, and plenty who do would be better off keeping some of it in the bank.
The better question isn’t “what percentage?” It’s “how much do I need so I’m not owing more than the car is worth for years, and so the payment fits?” Cars lose value fastest in the first two or three years, and a down payment is your cushion if the car is totaled or you need to sell. Below: where the 20/4/10 rule breaks, a worked equity example, how negative equity compounds, when less or more down makes sense, and how trade-in equity counts.
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In the full guide
- What a down payment actually does
- The 20/4/10 rule, and why it breaks
- Worked example: how down payment changes your equity
- Negative equity: the trap that compounds
- When less down makes sense
- When more down makes sense
- Trade-in equity counts too
- Your game plan
- What to say
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