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Your Complete Step-by-Step Guide from Research to Keys in Hand
How to Buy a Used Car: A Complete Guide for Sioux Falls Buyers
Buying a used car is one of the biggest financial decisions most people make — and it doesn't have to be stressful. Whether you're a first-time buyer or you've done this before, having a clear plan makes the entire process smoother, faster, and safer. This guide walks you through every step from setting your budget to driving off the lot, with practical tips you can actually use.
The biggest mistake most used car buyers make is starting at the dealership. The best car purchases start at home — with a clear budget, pre-approved financing, and a short list of vehicles you've already researched. The steps below follow the exact process our finance team recommends to every customer at Frankman Motor Company, and they work whether you're buying from a dealership, a private seller, or an online platform.
1
Set Your Budget
Before you browse a single listing, figure out what you can realistically afford. Your budget isn't just the sticker price — it includes taxes, registration, insurance, and ongoing costs like fuel and maintenance.
Here's a practical approach to budgeting:
Total monthly payment — Most financial advisors suggest keeping your car payment under 15% of your monthly take-home pay. If you bring home $4,000/month, aim for a payment of $600 or less.
Down payment — The more you put down, the less you finance and the lower your monthly payment. Even $1,000–$2,000 down makes a meaningful difference.
Trade-in value — If you're trading in a vehicle, get your estimated value ahead of time. This acts like a down payment and reduces the amount you need to finance.
Insurance costs — Get quotes on the vehicles you're considering. Insurance premiums vary widely depending on make, model, year, and your driving record.
Registration and taxes — In South Dakota, you'll pay 4% excise tax on the purchase price (minus trade-in), plus title and registration fees. Factor this into your total cost.
Frankman Tip: Use our Buying Power Calculator to see how much vehicle you can afford based on your down payment, trade-in, and monthly budget. You can also use our Payment Calculator to estimate monthly payments on specific vehicles. If you have a trade-in, get your estimated value through our Value Your Trade tool.
2
Get Pre-Approved for Financing
Getting pre-approved for a car loan before you shop is one of the smartest moves you can make. Pre-approval tells you exactly how much a lender is willing to finance and at what interest rate — so you know your real budget, not a guess.
Why pre-approval matters:
You know your rate — No surprises when you sit down in the finance office. You already know what your monthly payment will look like.
You shop with confidence — You can focus on vehicles that fit your actual budget instead of wondering if you'll be approved.
You have negotiating leverage — Sellers know a pre-approved buyer is serious and ready to close.
It protects your credit — Many dealerships, including Frankman, use a soft inquiry for initial pre-approval, which does not affect your credit score.
You can get pre-approved through your bank, a credit union, or directly through a dealership. If you're comparing options, apply with two or three lenders within a 14-day window — the credit bureaus treat multiple auto loan inquiries in that timeframe as a single inquiry.
Frankman Tip: Our finance team works with a network of lenders to find the best rate and terms for your situation — whether you have excellent credit, no credit, or are rebuilding after a setback. Apply online in minutes and get pre-approved before you visit.
3
Research Vehicles
Once you know your budget, start narrowing down what type of vehicle fits your needs. Don't just pick the first car that looks good — take time to research reliability, common issues, and total cost of ownership.
What to research:
Reliability ratings — Sites like Consumer Reports, J.D. Power, and RepairPal publish reliability data by make, model, and year. A vehicle with a strong reliability track record will cost less to maintain over time.
Common issues by make and model — Every vehicle has known weak spots. Search forums, owner reviews, and recall databases for the specific year and model you're considering. Knowing what tends to go wrong helps you ask the right questions.
Total cost of ownership — Factor in fuel economy, insurance premiums, maintenance intervals, and parts availability. A vehicle with a lower sticker price can cost more in the long run if it's expensive to insure or maintain.
Market pricing — Check KBB (Kelley Blue Book), NADA Guides, and listings on Cars.com or AutoTrader to understand what similar vehicles are selling for in your area. This gives you a baseline for evaluating whether a vehicle is priced fairly.
Your actual needs — Be honest about how you'll use the vehicle. A full-size truck is great for towing but expensive on fuel for a daily commute. A compact sedan saves on gas but might not fit a family of five comfortably.
Frankman Tip: Our online inventory features over 100 high-resolution photos per vehicle plus 30-second walk-around videos with the engine running — so you can do your research from home before setting foot on the lot.
4
Check the Vehicle History
A vehicle history report is non-negotiable when buying used. Services like CARFAX and AutoCheck compile data from thousands of sources to give you a comprehensive picture of a vehicle's past.
What a vehicle history report tells you:
Title status — Has the vehicle ever been declared a total loss (salvage or rebuilt title)? Is it a lemon law buyback? Does the title appear clean?
Accident history — How many accidents have been reported, and how severe were they? Were airbags deployed? Was the vehicle towed from the scene?
Odometer readings — Are the mileage readings consistent over time, or are there gaps that might indicate an odometer rollback?
Ownership history — How many previous owners? Was it a personal vehicle, a fleet vehicle, or a rental car?
Service records — Was the vehicle regularly maintained? Are there gaps in the service history that raise questions?
Flood and fire damage — Was the vehicle ever in a flood zone during a reported flood event? Some flood-damaged vehicles are cleaned up and resold without disclosure.
If you're buying from a private seller and they refuse to provide a vehicle history report or let you run one yourself, walk away. A clean history report doesn't guarantee a perfect car, but a missing one almost always means something is being hidden.
Frankman Tip: Every vehicle at Frankman Motor Company comes with a free CARFAX vehicle history report. We also provide all service records for any reconditioning work done at our on-site service center. No surprises, no hidden history.
5
Inspect the Vehicle
Once you've narrowed your options, it's time to see the vehicle in person. A thorough visual and mechanical inspection can reveal issues that don't show up in photos or history reports.
Exterior inspection checklist:
Walk around the vehicle and look for dents, scratches, rust, and uneven panel gaps — these can indicate previous body work or collision damage.
Check all glass for chips, cracks, and pitting.
Inspect the tires for tread depth and uneven wear patterns, which can indicate alignment or suspension problems.
Look under the vehicle for signs of rust, oil leaks, or fluid drips.
Check that all exterior lights work — headlights, taillights, turn signals, brake lights, and reverse lights.
Interior inspection checklist:
Sit in every seat. Check for rips, stains, excessive wear, or unusual smells (mold, smoke, heavy air freshener covering something up).
Test every electronic feature — windows, mirrors, locks, infotainment system, USB ports, climate control, heated/cooled seats.
Check the headliner, dashboard, and door panels for sagging, cracking, or evidence of water intrusion.
Open and close every door, the trunk, and the hood. They should operate smoothly without resistance or unusual noise.
Under the hood:
Check fluid levels and condition — oil (should be amber to dark brown, not milky or gritty), coolant (should be clean, not rusty), brake fluid, transmission fluid, and power steering fluid.
Look at belts and hoses for cracks, fraying, or bulging.
Check the battery terminals for corrosion.
Look for any aftermarket modifications that might indicate the vehicle was heavily modified or used hard.
6
Take a Test Drive
A test drive is your chance to evaluate how the vehicle actually performs on the road — not just how it looks parked on a lot. Drive for at least 20–30 minutes and include a mix of city streets, highway speeds, and neighborhood roads.
What to pay attention to during the test drive:
Engine — Does it start immediately? Are there unusual noises during idle or acceleration? Does it hesitate, stall, or surge?
Transmission — Do shifts feel smooth (automatic) or engage cleanly (manual)? Any grinding, slipping, or delayed response?
Brakes — Do they stop the vehicle smoothly and in a straight line? Any pulsation, grinding, or soft pedal feel?
Steering — Does the vehicle track straight on a level road? Any pull to one side? Any vibration or looseness in the steering wheel?
Suspension — Does the vehicle absorb bumps smoothly, or does it bounce, clunk, or rattle over uneven surfaces?
Highway driving — At highway speed, listen for wind noise, road noise, and any vibrations. These can indicate worn tires, wheel bearing issues, or alignment problems.
Visibility — Are there significant blind spots? Do the mirrors provide adequate coverage? Is the sight line comfortable for your height?
Turn off the radio during the test drive. You need to hear the vehicle, not your playlist. And if the seller discourages a test drive or limits it to a short loop around the parking lot, consider that a warning sign.
7
Have It Inspected by a Mechanic
Even if the vehicle looks great and drives well, there are things only a trained mechanic with a lift and diagnostic equipment can catch. An independent pre-purchase inspection (PPI) typically costs $100–$200 and can save you thousands by uncovering hidden problems before you commit.
A good pre-purchase inspection should include:
Compression test and leak-down test (engine health)
Transmission fluid condition and operation
Brake system measurement (pad thickness, rotor condition)
Suspension and steering component inspection
Exhaust system inspection
OBD-II scan for stored and pending diagnostic trouble codes
Undercarriage inspection for rust, frame damage, or previous repair evidence
If a private seller refuses to let you take the vehicle to a mechanic, that's a major red flag. A reputable dealership, on the other hand, should have already done this work themselves — and be willing to show you the results.
Frankman Tip: Every vehicle at Frankman Motor Company goes through a thorough multi-point inspection at our on-site service center before it reaches the lot. We do the mechanical vetting so you don't have to hire a third party. And if you want to bring your own mechanic or take the vehicle to one, you're always welcome to do so.
The best used car purchases are made by prepared buyers. Know your budget, know your rate, know the vehicle's history, and know what to look for.
8
Negotiate the Price
Negotiation is a normal part of buying a used car, but it doesn't have to be adversarial. The key is coming in prepared with real data — not gut feelings or arbitrary offers.
Tips for fair negotiation:
Know the market value — Use KBB, NADA Guides, and comparable listings to understand what the vehicle is worth. If the asking price is in line with market data, there may not be much room to negotiate — and that's okay.
Focus on the total price, not just the monthly payment — A lower monthly payment can be achieved by extending the loan term, which means you pay more in interest over time. Always negotiate on the total purchase price first.
Use vehicle condition as leverage — If the inspection revealed worn brakes, aging tires, or other issues, those are legitimate reasons to negotiate a lower price or ask the seller to address them before the sale.
Be respectful and realistic — Lowball offers waste everyone's time. If the vehicle is priced fairly and in good condition, a reasonable offer based on market data is more likely to be accepted.
Know your walk-away point — Decide the maximum you're willing to pay before you start negotiating. If the seller won't come down to a number that works for your budget, be willing to walk away.
Frankman Tip: Our pricing is based on real-market comparisons from the start. We price every vehicle competitively so there's no back-and-forth games — just a fair price backed by data.
9
Understand the Paperwork
Used car paperwork can feel overwhelming, but it's straightforward once you understand what each document does. Before signing anything, read it. Ask questions about anything you don't understand.
Key documents you'll encounter:
Title — This is the legal document proving ownership of the vehicle. When you buy a car, the title transfers from the seller to you (or to your lender if you're financing). Always verify the title is clean and matches the VIN on the vehicle.
Bill of sale — A document that records the details of the transaction: buyer, seller, vehicle identification, sale price, and date. Required for registration in South Dakota.
Odometer disclosure — Federal law requires the seller to disclose the vehicle's mileage at the time of sale. This is typically recorded on the title or a separate federal odometer statement.
Loan agreement (if financing) — This outlines the amount financed, the interest rate (APR), the loan term, the monthly payment amount, and the total amount you'll pay over the life of the loan. Review the Truth in Lending disclosures carefully.
Registration application — This registers the vehicle with the state of South Dakota and generates your license plates. Excise tax (4% of the purchase price minus trade-in credit) is due at registration.
Warranty documents — If the vehicle comes with any dealer warranty or you're purchasing a Vehicle Service Contract, review the coverage terms, exclusions, deductibles, and claim process.
Frankman Tip: Our finance managers, Kevin and Nate, walk every customer through every document and explain each line before you sign. No rush, no pressure — just clear explanations of what you're agreeing to.
10
Consider Protection Products
Once you've agreed on a price and started the paperwork, you'll typically be presented with optional protection products. These are add-ons that provide financial protection against unexpected costs after your purchase. Some are genuinely valuable — others may not be worth it depending on your vehicle and situation.
The most common protection products:
Vehicle Service Contract (VSC) — Sometimes called an extended warranty, a VSC covers the cost of mechanical breakdowns and repairs after your purchase. Coverage ranges from powertrain-only (engine, transmission, drivetrain) to comprehensive factory-type protection that covers most components. The right VSC depends on the vehicle's age, mileage, make, and model.
Gap insurance — If your vehicle is totaled or stolen, your insurance pays the actual cash value — not what you owe on your loan. Gap insurance covers the difference. It's especially important if you're financing with less than 20% down or on a loan term of 60+ months.
Cosmetic and protection packages — Products like ElevateCare cover everyday damage such as tire and wheel hazards, windshield cracks and replacement, key fob replacement, paintless dent repair, and 24/7 roadside assistance. These costs add up fast when paid out of pocket.
Don't dismiss protection products automatically, but don't accept them without understanding what they cover, what they cost, and how claims work. Ask the finance manager to explain the coverage details, exclusions, and whether the cost can be rolled into your financing.
Frankman Tip: We work with multiple top-rated warranty and protection providers and match coverage to each vehicle's specific year, make, model, and mileage. Learn more about our VSC options, ElevateCare, and Gap insurance on our Finance & Insurance page.
11
Complete the Purchase
You've done the research, the inspection, the test drive, the negotiation, and the paperwork review. Now it's time to close the deal.
What happens in the finance office:
Your financing is finalized and loan documents are signed.
Any protection products you've chosen are added and documented.
You'll review and sign the bill of sale, title application, odometer disclosure, and any warranty agreements.
If you're trading in a vehicle, the trade-in paperwork is processed and your trade-in equity is applied to the deal.
You'll make your down payment (check, debit, or other accepted methods).
You'll receive copies of every document you signed, your CARFAX report (if applicable), and any warranty documentation.
Before you leave, verify:
You have two sets of keys (if available).
You have all your signed document copies.
Your temporary tag or plates are properly displayed.
You have the vehicle's owner's manual (or know where to download one).
You understand when your first payment is due and how to make it.
12
After You Buy — What to Do Next
The purchase is done, but there are a few important steps to take care of in the days and weeks after you drive home.
Get insurance coverage in place — If you haven't already, contact your insurance provider and add the vehicle to your policy. If you're financing, the lender requires comprehensive and collision coverage. Don't drive without it.
Complete registration — In South Dakota, you have 45 days to title and register your vehicle at the county treasurer's office. If you bought from a dealer, they may handle this for you.
Set up your first service appointment — Even if the vehicle was recently serviced, it's smart to establish a baseline with your preferred mechanic or service center. An oil change, fluid top-off, and a quick once-over gives you peace of mind.
Start a maintenance schedule — Check the owner's manual for the manufacturer's recommended maintenance intervals. Following the schedule is the single best thing you can do to keep the vehicle running reliably and hold its resale value.
Organize your documents — Keep your title (or lien information), registration, insurance card, warranty documents, and service receipts in a safe place. A folder or digital scan works.
Frankman Tip: We have a complete guide to everything you need to do after buying — read our Steps After Buying a Used Car article for a detailed post-purchase checklist.
Red Flags to Watch For When Buying Used
Most used car sellers are honest, but bad actors exist in every market. Knowing the most common scams and red flags can protect you from a costly mistake.
Common Used Car Red Flags
If you encounter any of these, proceed with extreme caution — or walk away entirely.
Salvage or Rebuilt Titles
A salvage title means the vehicle was declared a total loss by an insurance company due to collision damage, flood, theft recovery, or other major event. A rebuilt title means it was repaired and passed a state inspection to return to the road. These vehicles can be significantly cheaper, but they're harder to insure, harder to finance, and have lower resale value. Repairs may also be questionable in quality.
Odometer Rollback
Odometer fraud is still a real problem. Watch for dashboard warning lights related to the instrument cluster, mismatched mileage between the CARFAX report and the odometer, and wear patterns that don't match the stated mileage — a vehicle with 40,000 miles shouldn't have a worn-out driver's seat and a smooth-polished steering wheel.
Flood Damage
Flood-damaged vehicles are often cleaned up and moved to different states for resale. Check for water stains on upholstery, musty or mildewy smells, silt or mud in hard-to-reach areas (under seats, inside the spare tire compartment), rust in unusual places, and foggy headlight or taillight lenses. A CARFAX report can also flag flood damage history.
Curbstoners
A curbstoner is an unlicensed dealer who poses as a private seller to avoid consumer protection laws, taxes, and warranty obligations. Signs include: multiple vehicles for sale at the same address, a seller who won't let you see the title until you've committed, a name on the title that doesn't match the seller, and reluctance to provide identification or let you take the vehicle to a mechanic.
Buying from a Dealer vs. Private Party
Both options have advantages. Understanding the trade-offs helps you decide which route makes sense for your situation.
Factor
Private Party
Dealership (Frankman)
Financing Available
You arrange your own
✓ Multiple lender network
Vehicle Inspection
You hire a mechanic
✓ Done before listing
Vehicle History Report
You purchase yourself
✓ Free CARFAX included
Warranty Options
As-is, no warranty
✓ Certified warranty + VSC options
Protection Products
Not available
✓ VSC, Gap, ElevateCare
Trade-In Accepted
Typically no
✓ Yes, applied to purchase
Title & Registration Help
You handle everything
✓ Handled by finance office
Legal Recourse
Very limited
✓ Dealer license, consumer protections
Price
Potentially lower sticker price
Market-based pricing, full support
Private party sales can sometimes offer a lower sticker price, but you take on all the risk: no inspection guarantee, no warranty, no financing assistance, and limited legal recourse if something goes wrong. When you buy from a reputable dealership, the price includes professional inspection, reconditioning, title handling, financing access, and ongoing support — which often makes the total value comparable or better.
The Frankman Difference
At Frankman Motor Company, we've been helping people buy used cars in Sioux Falls since 1988. We don't just sell vehicles — we prepare every vehicle for its next owner with thorough inspections, professional reconditioning, transparent history, and real financing options for every credit situation.
Every Vehicle Inspected
Multi-point inspection at our on-site service center before any vehicle reaches the lot.
Free CARFAX on Every Vehicle
Full vehicle history report provided with every purchase — no need to buy your own.
Financing for All Credit
Multi-lender network covering good credit, bad credit, no credit, and rebuilding situations.
VSC & Protection Options
Multiple warranty providers matched to your vehicle, plus ElevateCare and Gap insurance.
On-Site Service Center
Full-service repair shop and collision body shop right on our property for ongoing support.
Family-Owned Since 1988
Over 70,000 vehicles sold. Local reputation built on honest dealing and fair pricing.
Frequently Asked Questions
A common guideline is to keep your total car payment under 15% of your monthly take-home pay. So if you bring home $4,000 per month, aim for a payment of $600 or less including insurance. The total purchase price depends on your down payment, trade-in value, interest rate, and loan term. Use our Buying Power Calculator to see what fits your budget.
Yes. Pre-approval gives you a clear picture of how much you can finance and at what interest rate, so you can shop within your real budget. It also gives you leverage during negotiations because sellers know you're a serious buyer. Many lenders and dealerships, including Frankman Motor Company, use a soft credit pull for pre-approval, which does not affect your credit score.
There's no single magic number, but many buyers look for vehicles under 60,000–80,000 miles as a sweet spot between price and remaining useful life. More important than mileage alone is the type of miles (highway vs. city), maintenance history, and the specific vehicle's reputation for longevity. A well-maintained vehicle with 100,000 miles can be a better buy than a neglected vehicle with 40,000 miles.
Both have advantages. Private sellers may offer a slightly lower price, but you take on all the risk — no inspection guarantee, no warranty, no financing help, and limited legal recourse. A reputable dealership provides inspected and reconditioned vehicles, financing options, warranty coverage, trade-in capability, and legal protections under dealer licensing laws. At Frankman Motor Company, every vehicle is inspected, comes with a free CARFAX, and is backed by our finance team and on-site service center.
Pay attention to how the engine starts and idles, how the transmission shifts, how the brakes feel, whether the steering pulls to one side, how the suspension handles bumps, and any unusual noises or vibrations. Drive for at least 20–30 minutes on a mix of city streets and highways, and turn the radio off so you can hear the vehicle clearly. Test all electronics, climate controls, and safety features during the drive.
Absolutely. A vehicle history report from CARFAX or AutoCheck reveals title issues, accident history, odometer readings, ownership history, service records, and potential flood or fire damage. It's one of the most important tools for verifying a vehicle's background. Every vehicle at Frankman Motor Company includes a free CARFAX report.
A Vehicle Service Contract (VSC) — often called an extended warranty — covers the cost of mechanical breakdowns and repairs after your purchase. Coverage ranges from powertrain-only (engine, transmission) to comprehensive factory-type protection. Whether you should buy one depends on the vehicle's age, mileage, reliability reputation, and your risk tolerance. For most used car buyers, especially those purchasing vehicles over 3 years old or with higher mileage, a VSC provides meaningful financial protection against unexpected repair costs.
Always run a vehicle history report (CARFAX or AutoCheck), verify the VIN matches the title and the vehicle, have the vehicle inspected by a trusted mechanic, check for salvage or rebuilt title brands, compare the stated mileage to the wear on the vehicle, and be cautious of prices that seem too good to be true. Never wire money or pay in full before seeing the vehicle. If you're buying from a private seller, verify their identity matches the name on the title. Buying from a licensed dealer provides additional consumer protections.
Yes. Frankman Motor Company works with a network of lenders who specialize in all credit situations — including bad credit, no credit, and customers rebuilding after bankruptcy or repossession. Our finance team finds the best available rate and terms for your situation. You can apply online and get pre-approved before visiting. The initial pre-approval uses a soft inquiry, which does not affect your credit score.
After your purchase, make sure to get insurance coverage in place immediately, complete title and registration at the county treasurer's office within 45 days (your dealer may handle this), set up your first maintenance appointment, create a maintenance schedule based on the owner's manual, and organize all your purchase documents. We cover all of this in detail in our Steps After Buying a Used Car guide.
Browse over 200 inspected vehicles, get pre-approved for financing, or call our team to talk through your options. We're here to help — not to pressure.