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The Ultimate Used Car Buyer's Checklist
From Colorado Automotive Report & Service
Don't buy blind. Check these before you sign.
1Before You Even See the Car
- VIN check: Run a Carfax or AutoCheck report (salvage title? accidents? odometer rollback?)
- Market price: Compare asking price to KBB, Edmunds, and local listings
- Seller red flags: Pushy "buy today" pressure, won't let you inspect, cash only demands
- Service records: Ask for maintenance history (oil changes, timing belt, major repairs)
2Exterior Inspection (Walk Around First)
Body & Paint
- Panel gaps: Uneven spacing = possible accident repair
- Paint depth: Run your finger along panels. Feel for bumps (body filler = hidden damage)
- Rust: Check wheel wells, door edges, under trunk, rocker panels
- Tire wear: Uneven wear = alignment issues or suspension problems
- Tire age: DOT code on sidewall (tires older than 6 years = replace soon)
Glass & Lights
- Windshield cracks: Small chips spread; check all windows
- Headlight fog: Oxidized headlights = cosmetic issue (but check if they work)
- All lights work: Headlights, brake lights, turn signals, reverse lights
3Under the Hood (Engine Off First)
Fluids
- Engine oil: Pull dipstick. Dark/gritty = neglected; milky = head gasket leak
- Coolant: Should be bright green/orange; rusty brown = system neglect
- Brake fluid: Dark = old; low level = possible leak
- Power steering fluid: Pink or clear; brown/burnt smell = problem
- Transmission fluid: Should be red/pink; brown or burnt smell = major issue
Leaks & Hoses
- Visible leaks: Check ground under car, look for wet spots on engine
- Hoses & belts: Cracks, fraying, or squealing noises = replace soon
- Battery terminals: Corrosion (white/blue powder) = clean or replace battery
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4Interior Check
Seats & Controls
- Seat wear: Excessive wear doesn't match low mileage = odometer fraud
- All controls work: Windows, locks, mirrors, seat adjusters, A/C, heat
- Dashboard lights: Turn key to ON (engine off). Check engine light, ABS, airbag warnings
- Odometer: Does mileage match service records and wear?
Smells (Trust Your Nose)
- Musty/mildew: Water leak or flood damage
- Sweet smell: Coolant leak (heater core)
- Burning oil: Engine issue
This is a lot to check on your own. Let a pro handle it →
5Test Drive (20+ Minutes, Highway + City)
- Starts easily: No grinding, no hesitation, no smoke from exhaust
- Steering: Straight tracking, no pulling left/right, no vibration
- Brakes: Firm pedal, no grinding/squealing, stops straight
- Transmission: Smooth shifts (auto) or clutch feels good (manual)
- Engine: No hesitation, no knocking, smooth acceleration
- Suspension: No clunks over bumps, no bouncing
- Warning lights: Check engine light should turn off after starting; if it stays on = problem
6Under the Car (Bring a Flashlight)
- Frame damage: Look for bends, welds, or kinks (accident damage)
- Exhaust rust: Holes = replace soon
- Oil pan/transmission: Wet = leaking
- Suspension: Bounce each corner. Should settle in 1-2 bounces
When to Walk Away (Red Flags)
Seller won't let you:
- Get a pre-purchase inspection
- Test drive on highway
- See maintenance records
Vehicle has:
- Salvage title (unless you know what you're doing)
- Check engine light on (unless diagnosed and priced accordingly)
- Flood damage (musty smell, water lines, electrical gremlins)
- Frame damage (major accident history)
Seller is:
- Pushy ("buy today or it's gone")
- Vague about history
- Cash only with no paperwork
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