Buying a used car is one of the biggest financial decisions most people make — and the process is full of traps for the unprepared. Here's how to protect yourself.
Pick 2–3 models that fit your budget and check their reliability ratings on Consumer Reports or J.D. Power. Toyota Camry, Honda Civic, and Subaru Outback consistently rank well for used reliability. Avoid models known for expensive repairs unless you're a mechanic.
Your total monthly car costs — payment, insurance, gas, and maintenance — should stay under 20% of your take-home pay. A $10,000 car with $200/month in insurance and $150/month in fuel can easily reach $500+/month all-in.
Rule of thumb: don't spend more than 35% of your annual gross income on a car. Earning $50,000/year means a max car budget of $17,500.
Run a Carfax or AutoCheck report on any car you're seriously considering. Look for: accident history, number of previous owners, service records, and title issues (salvage, flood, or lemon law buyback titles are red flags).
Before buying, pay a trusted mechanic $100–$150 to inspect the car. This is the single most important step most buyers skip. A mechanic can spot hidden damage, rust, and mechanical problems that aren't visible to the naked eye.
Look up the car's value on Kelley Blue Book, Edmunds, and CarGurus before negotiating. If the asking price is significantly above market value, you have room to negotiate. If it's at or below market, it may already be a fair deal — don't expect a huge discount.
Come in with a specific number backed by your research. "Based on comparable listings and the Carfax showing two previous owners, I'd like to offer $X." If the seller won't budge and you believe the car is overpriced, be prepared to walk away.
Use our free used car value calculator to check if you're getting a fair price.
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