The decisions that happen on either side of ownership, and how not to get burned at either end.
Buying a Car
A car is one of the largest purchases most people make, and it depreciates faster than almost anything else they own. The goal is to be patient, do the homework, and let the deal find you.
New vs Used
| Factor | New | Used |
|---|
| Price | Higher | Lower |
| Depreciation | Rapid (20-30% year 1) | Already occurred |
| Warranty | Full manufacturer | May have remaining or none |
| Financing rates | Often lower | Higher |
| Selection | Choose exactly what you want | Find what's available |
| Reliability | Known, peak condition | Varies |
| Insurance | Higher | Lower |
Best Value Sweet Spot
| Age | Mileage | Why |
|---|
| 2-3 years | 25,000-40,000 | Major depreciation past, still reliable |
| 3-5 years | 40,000-70,000 | Even better value, plenty of life left |
| CPO (Certified Pre-Owned) | Varies | Inspected, warrantied, good compromise |
Researching Before Buying
The hour you spend on this is the hour with the highest dollar return in the whole process.
What to Research
| Area | Resources |
|---|
| Reliability | Consumer Reports, JD Power |
| Owner reviews | Edmunds, Cars.com forums |
| Common problems | Forums, CarComplaints.com |
| Fair price | Kelley Blue Book, Edmunds, NADA |
| Safety | IIHS, NHTSA ratings |
| Cost of ownership | Edmunds, RepairPal |
True Cost of Ownership
| Factor | Considerations |
|---|
| Purchase price | What you pay |
| Depreciation | How much value it loses |
| Insurance | Get quotes for specific models |
| Fuel | MPG × your driving |
| Maintenance | Scheduled service costs |
| Repairs | Typical repair frequency and cost |
| Taxes/fees | Varies by state |
Setting a Budget
| Rule | Description |
|---|
| 20/4/10 | 20% down, 4-year loan max, 10% of income max |
| All-in costs | Include insurance, fuel, maintenance |
| Don't max out | Leave room in budget |
| Pre-approval | Know what you can borrow before shopping |
Where to Buy
There are tradeoffs in every direction. Convenience costs money. Money costs effort. Pick the one you can afford.
Dealerships
| Pros | Cons |
|---|
| Financing available | Higher prices |
| Trade-in accepted | Pressure tactics |
| Some consumer protections | Fees and add-ons |
| Warranty options | Less negotiation room on popular cars |
Private Sellers
| Pros | Cons |
|---|
| Lower prices | No warranty |
| Negotiate directly | More homework on your part |
| No dealer fees | Paperwork yourself |
| Often maintained by owner | Can't always verify history |
Online (Carvana, CarMax, Vroom)
| Pros | Cons |
|---|
| Convenient | Can't physically inspect first |
| No haggling (set prices) | May pay more |
| Return periods | Delivery wait |
| Large selection | Limited negotiation |
Inspecting a Used Car
You're not trying to be a mechanic on the lot. You're trying to spot the obvious tells of neglect, abuse, or hidden damage before you commit to a test drive.
Visual Inspection
Exterior
| Check | Looking For |
|---|
| Paint | Color consistency, orange peel, waves |
| Body panels | Alignment, gaps, ripples |
| Glass | Chips, cracks |
| Lights | All working, clear lenses |
| Tires | Wear pattern, matching, age |
| Rust | Wheel wells, rocker panels, underneath |
Interior
| Check | Looking For |
|---|
| Odometer vs. wear | Does wear match mileage? |
| All controls | Test every button and switch |
| A/C and heat | Both working properly |
| Seats | Stains, tears, adjustments work |
| Carpet | Wear, stains, water damage signs |
| Headliner | Sagging, stains |
| Smell | Musty (water damage), burning, odd smells |
Under Hood
| Check | Looking For |
|---|
| Fluid levels | All proper level and condition |
| Leaks | Any fresh wetness, stains |
| Battery | Age, corrosion, terminals |
| Hoses | Cracks, soft spots, bulges |
| Belts | Cracks, wear, glazing |
| Oil cap | Milky (coolant leak), sludge |
| General condition | Clean vs. neglected |
Underneath
| Check | Looking For |
|---|
| Leaks | Fresh wet spots |
| Rust | Frame, suspension, exhaust |
| Exhaust | Holes, excessive rust |
| Suspension | Wet shocks, cracked boots |
Test Drive
| Test | What to Evaluate |
|---|
| Cold start | Starts easily, no smoke, no strange noises |
| Idle | Smooth, no shaking |
| Acceleration | Smooth, responsive, no hesitation |
| Braking | Stops straight, no pulsation, no noises |
| Steering | Straight, responsive, no play |
| Transmission | Smooth shifts, no clunks, no slipping |
| Highway driving | Stable, no vibrations |
| Various roads | Bumps, turns, different conditions |
| All speeds | City and highway |
| Parking | Easy to maneuver |
Red Flags
| Red Flag | Possible Issue |
|---|
| Mismatched paint | Prior accident |
| Water lines in trunk/interior | Flood damage |
| Excessive rust | Structural issues |
| Low price for condition | Hidden problems |
| Seller in a hurry | Something to hide |
| No maintenance records | Poor maintenance |
| Title issues | Salvage, lien, wrong name |
| VIN mismatch | Fraud |
Vehicle History Reports
Useful but not complete. Treat the report as a confirmation tool, not a primary source. A clean report does not mean a clean car.
What to Get
| Service | What It Shows |
|---|
| Carfax | Accidents, ownership, service records |
| AutoCheck | Similar to Carfax, different sources |
| NMVTIS | Title brand, odometer, total loss |
| Check | Red Flag |
|---|
| Title brand | Salvage, flood, rebuilt |
| Accident history | Frame damage, multiple accidents |
| Ownership count | Many owners = potential issues |
| Odometer | Rollback, discrepancies |
| Service records | Gaps in maintenance |
Reports aren't complete. Not every accident is reported, not every owner uses dealer service. The report is a confirmation, not a guarantee.
Pre-Purchase Inspection
The most underused tool in the buying process. A hundred and fifty dollars at an independent shop has saved buyers thousands more times than it has missed something.
Why It Matters
- $100-150 investment that can save thousands on hidden problems
- Finds the issues a quick test drive will not
- Gives you a written list to negotiate against
- Peace of mind on the largest moving part you'll own
What's Checked
| System | Inspection Points |
|---|
| Engine | Compression, leaks, noises |
| Transmission | Operation, fluid condition |
| Brakes | Pads, rotors, hydraulics |
| Suspension | Wear, play, alignment |
| Electrical | All systems function |
| Cooling | Pressure test, thermostat |
| Exhaust | Leaks, catalytic converter |
| Frame/body | Rust, accident damage |
How to Arrange
| Method | Notes |
|---|
| Your mechanic | Best option, trusted |
| Independent shop | Ask about pre-purchase inspections |
| Mobile inspector | Comes to the car |
| Dealership | More expensive, thorough |
Negotiating
Buying a car is the rare retail interaction where the price is genuinely flexible. Treat it that way.
Before Negotiating
| Preparation | Why |
|---|
| Know fair market value | Multiple sources |
| Know your max price | Stick to it |
| Be willing to walk away | The single strongest position you can hold |
| Have financing ready | Don't rely on dealer |
| Inspect car first | Specific issues become specific concessions |
Negotiation Tips
| Tip | Reasoning |
|---|
| Focus on total price | Not monthly payment |
| Negotiate one thing at a time | Trade-in separate from purchase |
| Point out flaws | Negotiate based on condition |
| Be polite but firm | Aggressive rarely works |
| Take your time | Don't be pressured |
| Get everything in writing | Before signing |
Common Dealer Tactics
| Tactic | Response |
|---|
| "Today only" | Walk away, price will be there tomorrow |
| Payment focus | Insist on negotiating total price |
| Manager needs to approve | Let them take their time |
| Trade-in lowball | Get outside quotes first |
| Fee additions | Negotiate or walk |
| Extended warranty pressure | You can buy later if you want it |
Paperwork
The boring part. Get it wrong and the car you just bought is somehow still legally owned by someone else.
Essential Documents
| Document | Purpose |
|---|
| Title | Proof of ownership |
| Bill of sale | Records transaction |
| Odometer disclosure | Mileage verification |
| Release of liability | Seller protection |
| Smog/emissions certificate | Where required |
Title Transfer
| Step | Notes |
|---|
| Verify title is clean | No liens, salvage, etc. |
| Complete seller section | Signatures, date, mileage |
| Complete buyer section | Your info |
| Visit DMV | Or authorized agent |
| Pay fees | Transfer fee, taxes |
| Get new registration | In your name |
Dealer Purchase
| Document | What to Check |
|---|
| Purchase agreement | All costs itemized |
| Warranty paperwork | What's covered |
| Financing contract | Rate, term, total cost |
| Title application | Dealer handles transfer |
Selling a Car
The mirror image of buying. The same things that make a car appealing to you when shopping make yours appealing to someone else.
Preparing to Sell
| Task | Why |
|---|
| Gather records | Maintenance history adds value |
| Get detailing | Clean cars sell faster and for more |
| Minor repairs | Fix small issues |
| Take quality photos | Many angles, good lighting |
| Get the title | Have it ready |
| Research value | Know what it's worth |
Where to Sell
| Method | Pros | Cons |
|---|
| Private sale | Highest price | More effort, buyer vetting |
| CarMax | Quick, easy | Lower offer |
| Dealer trade-in | Convenient | Usually lowest value |
| Online (Carvana, etc.) | Quick, no haggling | May not be best price |
Listing Tips
| Element | Best Practice |
|---|
| Photos | Clean car, good lighting, all angles |
| Description | Honest, complete, highlight features |
| Price | Slightly high for negotiation room |
| Contact | Phone or email, be responsive |
| Availability | Be flexible for showings |
Showing the Car
| Tip | Reasoning |
|---|
| Meet in public place | Safety |
| Verify license | Before test drive |
| Accompany on test drive | Protect yourself and car |
| Have paperwork ready | Speeds process |
| Be honest about issues | Builds trust, avoids problems |
Completing the Sale
| Step | Notes |
|---|
| Agree on price | In writing |
| Payment | Cash, cashier's check, or verified payment |
| Complete title | Sign it over |
| Bill of sale | Both parties sign |
| Remove plates | In some states |
| Cancel insurance | After sale complete |
| Notify DMV | Release of liability |
Key Takeaways
- Research is the highest-return hour in the entire process; spend it
- A pre-purchase inspection is the cheapest insurance you'll ever buy
- Check the vehicle history report, but don't trust it as the final word
- A thorough test drive covers cold start, city, highway, and parking
- Negotiate the total price, never the monthly payment
- Verify every piece of paperwork before money changes hands
- Patience beats every dealer tactic; the next deal is always coming
Next Steps
Continue to 07-working-mechanics.md for getting fair treatment once the car is yours.