Real titles have a watermark only visible in transmitted light. Forgeries and washed reprints skip it. Tilt the page too, the color of the state emblem should shift as the light hits it differently.
Brake and accelerator pedals smooth out around 80k miles and show bare metal around 150k. A "40k mile" car with metal showing through has been wound back. The floor mat heel wear lines up too.
A new filter is uniformly white. One blown out with compressed air shows dark streaks along the pleat tops. Untouched filters are evenly gray-brown. It only takes a minute.
New rotors are flat. Pads wear the face down with use, but the outer edge stays original. A pronounced lip on a low-mile car means it's been through multiple pad sets — and that doesn't happen in 40k miles.
In March 2026, the Federal Trade Commission sent warning letters to 97 auto dealer groups across the country. The message was simple: the price you advertise has to be the price people actually pay. That means all mandatory fees included — not tacked on at signing.
This matters because one of the most common complaints about dealerships is the gap between the advertised price and the final number on the contract. You see a car listed at $18,900 online. You show up. By the time you're signing, it's $21,400 because of a "documentation fee," a "dealer prep fee," a "lot fee," and whatever else they can wedge into the paperwork.
Some of these fees are legitimate. Some aren't. The FTC's position is that it doesn't matter — if the buyer has to pay it, it needs to be in the advertised price. Period.
What to do with this information:
• If a dealer advertises a price and then adds fees at the contract stage, you have a legitimate complaint. Screenshot the listing before you go in.
• The FTC specifically called out practices where dealers double-charge for services already included in the advertised price.
• If you think a dealer is advertising one price and charging another, you can file a report at ReportFraud.ftc.gov.
Source: FTC press release, March 13, 2026
r/VINvestigators
Cold starts tell you what they're hiding. Blue smoke means oil burning past the valve seals. White smoke that lingers means head gasket. Black puffs mean a sensor problem behind a recent code clear. Healthy clears in 15 seconds.
When an airbag deploys, the seat belt pretensioners fire too — replacement is standard repair. Pull each belt all the way out. The tag is near the buckle.
Go to vpic.nhtsa.dot.gov, paste the VIN, hit decode. If it doesn't return the right make, model, and year — or returns nothing — the seller typed it wrong or made it up.
Go to vpic.nhtsa.dot.gov, paste the VIN, hit decode. If it doesn't return the right make, model, and year — or returns nothing — the seller typed it wrong or made it up. Either way, don't go.
Go to vpic.nhtsa.dot.gov, paste the VIN, hit decode. If it doesn't return the right make, model, and year — or returns nothing — the seller typed it wrong or made it up. Either way, don't go.
Carfax is the most well-known vehicle history service, but it's not the only one, and it doesn't catch everything. Here are four free tools that check things Carfax sometimes misses.
Already mentioned in the Foundation series, but worth repeating. Enter any VIN and it tells you the make, model, year, engine, body type, and more — decoded directly from the VIN characters. Use this to verify that the car in front of you matches what the VIN says it should be. Free, no signup, government-run.
The National Insurance Crime Bureau lets you check any VIN against their database of vehicles reported as stolen or that have been declared a total loss by an insurance company. This catches cars that were written off but somehow ended up back on the market with clean-looking titles. Free, limited to 5 checks per day.
Enter a VIN and see every open recall on that vehicle. A car with three unrepaired safety recalls isn't necessarily a scam — but it is a negotiating point and a safety issue. Recall repairs are always free at the manufacturer's dealership, so there's no cost to fix them, but you want to know before you buy. Also free, unlimited checks.
The National Motor Vehicle Title Information System is the federal database that tracks title brands across state lines. This is the tool designed specifically to catch title washing — when someone moves a branded car to a new state to get a clean title. Access through approved providers costs a few dollars, but the federal lookup itself is the most authoritative source. Some providers offer it for as little as $1-2.
How to use all four together: run the VIN through the NHTSA decoder first to confirm the car is what it claims to be. Then check NICB for theft/total loss history. Then check recalls. Then, if everything looks clean and you're seriously considering the car, run it through NMVTIS for the title brand history. Total cost: $0 to $2. Total time: about 10 minutes. These four checks catch problems that a Carfax alone would miss.
Facebook Marketplace has become one of the biggest used car platforms in the country, and scammers know it. Here are five listing patterns that should make you stop and verify before going further.
Stock photos or photos from other listings. Right-click the listing photo and do a reverse image search (Google Images or TinEye). If the same photo appears on other listings — different cities, different sellers — the listing is fake. Real sellers take photos in their own driveway with their own phone.
Price is 20-30% below market for no explained reason. Check the car's value on KBB or NADA before contacting the seller. A 2019 Civic with 50k miles has a known market range. If it's listed $4,000 below that floor, the listing exists to generate responses, not to sell a real car.
Seller pushes for a deposit before you see the car. "I have a lot of interest, can you put $500 down to hold it?" No. You never send money before seeing a car in person and verifying the VIN. This is the most common way people lose money to fake listings.
Seller refuses to share the VIN. There is no legitimate reason to withhold a VIN from a serious buyer. The VIN is visible through the windshield to anyone walking past the car. If they won't share it, they know what a VIN check would reveal.
Communication moves off-platform immediately. Scammers want you off Facebook Messenger as fast as possible because Facebook can moderate and track conversations there. If the first message says "text me at this number" or "email me here" — be cautious. Legitimate sellers are fine talking on the platform where they listed.
None of these patterns alone means the car is definitely a scam. But two or more together? Walk away and keep looking. There are plenty of real cars listed by real sellers — you don't need to take the risk on a sketchy one.
A curbstoner is someone who buys and sells cars regularly — like a dealer — but without adealer's license. They pose as private sellers to avoid inspections, title disclosure rules, warranty obligations, and the consumer protection laws that apply to licensed dealerships.
This matters because when you buy from a licensed dealer, you have legal protections: implied warranties in some states, lemon law coverage in others, AG complaint options, and the dealer's license as leverage. When you buy from a private seller, most of those protections vanish. A curbstoner gets the profit margins of a dealer with the legal exposure of a private seller. You lose on both ends.
How to spot one:
Multiple listings from the same phone number or account. Search the phone number on Facebook Marketplace, Craigslist, and OfferUp. If the same number shows up on three different cars in different names — curbstoner.
The car is titled in someone else's name. A private seller should have the car in their name. If they say "it's my cousin's" or "I'm selling it for a friend" or the title is in a business name — flag it. Legitimate sellers can explain the chain of ownership.
They can't answer basic questions about the car's history. A real owner knows where they bought it, what repairs they did, what that weird noise was in 2023. A curbstoner bought it three days ago and knows nothing.
They want to meet somewhere other than their home. Private sellers usually show the car at their house. Curbstoners meet in parking lots because they don't want you knowing where they live — and because they might have five other cars parked there.
The car was recently titled. Check the title date. If the seller has owned the car for less than 30 days, ask why. There are legitimate reasons (inherited, divorce, bought and realized they don't want it), but a car flipped in under a month is a pattern.
Fresh temporary tags. A car on its second or third set of temporary plates often means it's been passed through multiple hands without proper registration.
Curbstoning is specifically illegal in most states. If you identify one, report them to your state DMV and AG — you're not just protecting yourself, you're protecting the next buyer.
In March 2026, the Federal Trade Commission sent warning letters to 97 auto dealer groups across the country. The message was simple: the price you advertise has to be the price people actually pay. That means all mandatory fees included — not tacked on at signing.
This matters because one of the most common complaints about dealerships is the gap between the advertised price and the final number on the contract. You see a car listed at $18,900 online. You show up. By the time you're signing, it's $21,400 because of a "documentation fee," a "dealer prep fee," a "lot fee," and whatever else they can wedge into the paperwork.
Some of these fees are legitimate. Some aren't. The FTC's position is that it doesn't matter — if the buyer has to pay it, it needs to be in the advertised price. Period.
What to do with this information:
• If a dealer advertises a price and then adds fees at the contract stage, you have a legitimate complaint. Screenshot the listing before you go in.
• The FTC specifically called out practices where dealers double-charge for services already included in the advertised price.
• If you think a dealer is advertising one price and charging another, you can file a report at ReportFraud.ftc.gov.
Source: FTC press release, March 13, 2026
