BuyerSideAuto
Independent used-car buyer protection

The seller knows the car. Now you will too.

A free checklist you run on your phone, standing next to the car. It walks you through what to check, then tells you straight: go ahead, ask more questions, or don't buy yet.

Run the free checklist → How it works

Free. About 15 minutes plus a test drive. No account needed.

Helping your kid buy their first car? Start here →

BuyerSide
Your result · 9 of 9 stages checked
Stop

Don't buy yet.

Don't hand over money until each of these is resolved or verified.

  • Odometer doesn't match the history reportPaperwork · stage 8
  • Warning light stays on after startCold start · stage 5
  • Seller won't allow an inspectionBefore you go · stage 1
Used cars are too expensive to guess on
$27,239
Average asking price of a used car in the U.S.
Cox Automotive, August 2026
2.45 million
Cars on the road suspected of having their odometers rolled back
CARFAX, December 2025
$3,300
Average value lost when a buyer unknowingly gets one
CARFAX, December 2025

The seller may know the car. You need to know what to check.

You don't need to be a mechanic to ask better questions.

The checklist walks you through the car in the order you'd actually look at it, then tells you plainly what you found.

1. Check the VIN before you go

Recalls, theft and total-loss records, title brands, and history reports. Free or a few dollars each.

2. Walk the car, stage by stage

Nine stages, from the walkaround and cold start to the test drive and paperwork. Tap anything you notice.

3. Get a straight answer

Green, Caution, or Stop, with the reasons. Skip a stage and it says so, instead of pretending the car passed.

The things people wish they'd caught

Never rely on one source of truth. Not a report, not a checklist, not the seller's word. Each check catches what the others miss.

Mileage that doesn't add up

Compare the dash, the history report, the title, and the service records.

Flood damage

Silt under the carpet, a musty smell, rust where there shouldn't be any. Walk away.

Title problems

A VIN that doesn't match, a salvage brand, or a title not in the seller's name.

A warning light that stays on

Or one that never lights up at all when you turn the key, which can mean a problem is being hidden.

Open safety recalls

Look them up on the VIN. Often fixed at no charge by a dealer.

A seller who won't allow an inspection

A mechanic you choose is the cheapest insurance in the whole deal.

62%

of used-car buyers who later hit major repairs had skipped the VIN check before buying. Most found the problem within three months.Survey of 2,011 people looking up vehicle history, April 2026, by Bumper, a vehicle-history company. Figures are among the respondents who reported major repairs.

Why BuyerSide exists

I learned this one the expensive way.

I bought a used Chevy Suburban. Black, clean, the kind you picture in a motorcade. The miles on the dash looked right. The price looked fair.

They weren't. It had spent its life running airport trips, and the odometer had been rolled back. A history report, the kind that costs less than a tank of gas, would have shown the mileage didn't add up. I didn't run one. Nobody had told me to.

I wasn't careless. I just didn't know what I didn't know. That's how most people get burned on a used car: not by being foolish, but by trusting the one number in front of them.

Never rely on one source of truth.

BuyerSide won't tell you a used car is "good." Nobody can promise that from a website. It's here to help you slow down, check the things that matter, and know when something doesn't add up.

— BobFounder, BuyerSide Auto

Whose side we're on

Yours. That's the whole point of the name.

We don't sell cars, and dealers don't pay us to send you their way.

Your checklist stays on your phone. We don't see it.

We tell you when we're not sure, and when a professional should look.

The checklist is free. No account, no catch.

The cheapest time to find a problem is before you own it.
Run the free checklist →