How Does Carfax Work?

When it comes to a car’s condition, people often mention the Carfax report. So just how does Carfax work?  A Carfax report is your window into a car’s past. Like a private eye, it gleans data from insurance companies, DMVs, and even the police to tell you about a car’s background.

In the most extreme cases, it can save you from buying a lemon. That’s why we include a full free Carfax report for every car we list on Shift so customers know exactly what they’re getting (and what they’re not).

How does Carfax actually work?

A Carfax report is essentially a data snapshot of a number of different available data records. It gathers information from police departments, insurance companies, DMVs, and auction houses to piece together a history on nearly every car out there. Their data-gathering team in Virginia adds about 3.5 million records a day, with a compiled total of about 15 billion records.

How does Carfax help in buying a used car?

Big Lebowski car impoundThe records included in a Carfax report tell you things you wouldn’t know by just going for a test drive or having a mechanic inspect the car. A Carfax report is a little like a crystal ball that can give you a picture of a car’s past, such as:

  • Odometer readings and repair history
  • Number of past owners
  • Any accidents reported by DMVs, insurance companies, or police departments
  • Whether the car’s a lemon or been salvaged or junked
  • Whether a car was ever used as a fleet vehicle, autos used by businesses and often subject to lots of abuse
  • Lien and repossession history
  • Emission inspection statuses
  • Manufacturer recalls and buybacks

All of this info lets you avoid getting scammed and helps you make a more informed decision about the car you’re about to buy.  At Shift, every car we list has gone through a rigorous 150-point inspection by ASE-certified mechanics, is reconditioned and comes with a complete vehicle history report.

Where does all that data come from?

Carfax must have an army of data crawlers trolling the internet because the company culls data from about 92,000 sources—everything from motor vehicle agencies, to many police and fire departments, collision repair facilities, and auto auctions.

Here’s their list of all of the sources:

  • Fire departments
  • Manufacturers
  • Law enforcement agencies U.S. motor vehicle agencies
  • Canadian provincial motor vehicle agencies
  • Auto auctions and salvage auctions
  • Collision repair facilities
  • Service/maintenance facilities
  • Insurance companies
  • Automotive recyclers
  • Rental/fleet vehicle companies
  • State inspection stations
  • Extended warranty companies
  • Car dealerships Import/export companies

How much does Carfax cost?

Carfax's Carfox
Carfox: easily our favorite mascot in the car space

Carfax has a three-tiered pricing model. If you’re going to test drive more than one car, and you probably will, you might want to get the second option, which provides five reports.

  • MyCarfax: A free app that provides info on maintenance and recalls for vehicles, as well as estimate repair costs and help finding local repair services. Doesn’t include Vehicle History Reports.
  • 1 Carfax Report: $39.99
  • 5 Reports:  $59.99 (valid for 60 days)
  • Unlimited Reports for 60 days: $69.99 gets you unlimited by searching by license plate
  • Shift: Free. Zip. Zilch.

At the end of the day, the Carfax report is one of the most important pieces of documentation you can get on a used car, so be sure to get one when you go shopping.

How to Buy a Used Car: What to Know & What to Avoid

Buying a car is tricky business. After your house, a car purchase is likely to be the most expensive decision you make. To help you have the best possible experience, here are some tips on how to buy a used car.

Don’t buy a used car with a salvaged title

This is the mother of all car buying mistakes. Why? First, the reason the car was salvaged—totaled in an accident, stolen, or flooded—are sufficient reasons to walk away. Second, resale value is going to be awful, and most buyers won’t even be interested. Third, these cars can be hard to register and insure.

Yes, $2,000 for a 2005 BMW 3-series seems like a screaming deal, but you’ll be very sad when the car breaks and you can’t sell it to anyone as it sits in front of your house for two years like a tribute to foolishness. The solution here is easy, don’t do it. How do you know if a car has a salvaged title? You need to get a vehicle history report. Which brings us to our next common mistake.

Always get a vehicle history report

Running a vehicle history report such as Carfax is crucial when car shopping. You want to look for things like accidents, evidence of maintenance, and number of previous owners. You can also see if a celebrity once owned the car (bonus points if it was John Voight). If the car has had five owners in three years, you might want to be suspicious. Why would so many people want to part ways with this car?

If the report shows that the car has been in an accident, it’s not necessarily a deal-breaker if the repairs were done correctly. That being said, you’ll want to be extra careful to look for issues during the test drive. On Shift, you’ll find the Carfax report available from every car’s listing page.

Don’t go in with rose-colored glasses

This sounds strange, but falling in love with a car before you buy it can be a mistake. It can cause you to gloss over some things that you’ll regret not noticing later. A friend recently wanted a Toyota 4Runner so badly that he lost sight of the fact that it wasn’t a good choice for him. The 4Runner got poor mileage and was too large and too expensive for his needs.

Try not to get too excited before you agree on a purchase price. Even if the car is right for you, if the seller sees how badly you want it, you might have less bargaining power. (Especially at dealerships.)

Stay within your budget

Making a budget for your purchase is important. Ask yourself what you can realistically afford. Consider not just monthly payments, but how long you’d be making those payments. Then be sure to add on costs for maintenance, gas, registration, and insurance. If you haven’t considered these extra costs, you could be in for a sad surprise.

Cars that were more expensive new tend to have higher maintenance costs. Just because a ten year old BMW is the same price as a five-year old Honda doesn’t mean the cost of ownership will be the same.

Do a pre-purchase inspection

Before finalizing the purchase, ask if you can have your mechanic take a look at the car. Often referred to as a PPI, it’s an expense that more than pays for itself. Unless you’re great with cars, it’s really hard to spot everything a professional will. If you can, take it to your usual mechanic, since a new mechanic who performs a PPI may suggest unnecessary repairs or fixes that aren’t needed yet.

At Shift we think this is such an important step that we perform a 200-point inspection on every car we list. We include our findings in an inspection report we give every buyer on their test drive, at no extra cost. The inspection is that important.

Do your research

You wouldn’t go to a restaurant that you’d heard nothing about for a first date (especially if that meal cost thousands of dollars). You’d ask for a friends advice, you’d check a ratings website, or you’d read a review in the local newspaper. It’s the same deal with buying a car. The internet is full of information about cars, so spend some time learning about your potential new whip before you test drive it.

Don’t be a stickler for brand

Just because a car manufacturer built your favorite car—the little yellow hatchback you’ve had since you were a freshman in college—doesn’t mean you should blindly buy from them again. Car manufacturers change over the years. Standards change, manufacturing facilities move, engineers retire, and new CEOs come in. Blind Faith is a great name for a classic rock band, but not a great strategy for buying a car.

Make sure it’s passed its emissions and smog tests

In states that require smog tests, this is a bugaboo that really should be avoided. If you buy a car that hasn’t been tested recently, you could get stuck paying for a lot of repairs to make the car passable. It’s the seller’s responsibility to make sure that a car has been smogged recently, so ask for a proof of a current smog certification on the test drive.

Be wary of overdue DMV fees 

Unbeknownst to you, a car may have accrued registration fees, parking tickets, or toll violations. You don’t want to be saddled with the previous owner’s baggage, but how do you know if you are? First, you can ask the owner. If you don’t trust them, put on your PI hat and contact the DMV with the license plate number.

Ask for maintenance history

If the owner has no idea when the oil was last changed, or has no record of it ever being changed, you should walk away. It’s a sign that the car has been neglected. A good sign is a folder full of receipts for work done at a reputable shop.

Don’t buy a really dirty or rusty car

rusty carWhat mold is to bread, rust is to cars. You don’t eat moldy bread, right? So you don’t want buy a rusty car. If you look under a car and everything looks rusty, walk away. Rust destroys body panels, engine components, suspension pieces, and even hardware. It can mean changing a routine bolt becomes a day-long job for a mechanic. If that sounds expensive, that’s because it is. Do yourself a favor and check the car for rust, especially if you live in an area where the roads are salted during the winter.

Similarly, a dirty car can be a red flag; it mean that the owner doesn’t take good care of it. If they can’t be bothered to clean it up for a prospective buyer, can you expect them to have bothered to change the oil? Also, dirt can conceal dents, body repairs, or paint work. So be wary!

The truth is, car shopping isn’t easy. In fact, it’s enough to make your head spin like a set of radials. But with this list of car buying mistakes and a steady hand, you’ll be behind the wheel of a great car for years to come.