Set Budget and Affordability
1-2 hoursUse the 20/4/10 rule to determine max price including taxes, fees, and insurance. Factor in immediate maintenance reserves for used vehicles.
Field context
This workflow is part of 3 niche fields
Free step-by-step used car buying for budget-conscious buyers. Plan used car buying with calculators and checklists covering set budget and affordability.
Use the 20/4/10 rule to determine max price including taxes, fees, and insurance. Factor in immediate maintenance reserves for used vehicles.
Check KBB, Edmunds, and CarGurus for fair purchase price by VIN, mileage, trim, and condition rating.
Run Carfax/AutoCheck, test drive on highway and city roads, and hire an independent mechanic for pre-purchase inspection ($100-$200).
Negotiate out-the-door price, verify lien release on financed vehicles, and complete title transfer at DMV within state deadline.
Set maximum purchase price based on income and total vehicle costs.
Estimate fair price based on age, mileage, and model depreciation curve.
Budget upcoming maintenance based on mileage and model history.
Quote insurance before committing — used sports/luxury models cost more.
Model loan terms for negotiated out-the-door price.
Typical US price impact of odometer reading on 5-year-old midsize sedan.
| Mileage | Price vs Low-Mile | Maintenance Risk |
|---|---|---|
| Under 30K | 100% | Low |
| 30K-60K | 85-92% | Moderate |
| 60K-100K | 70-82% | Higher |
| Over 100K | 55-70% | Significant |
Vehicles lose 50-60% of value in the first 5 years — certified pre-owned programs add warranty peace of mind.
A $150 inspection can reveal $3,000+ in hidden transmission or engine issues — non-negotiable for private-party sales.
Bring printed KBB/Edmunds values to the table — sellers respect data-backed offers over lowball haggling.