why ddpc exists
your vehicle's history should belong to you, not the industry that sells it back to you. ddpc is the version built around that idea.
ddpc is free. forever. everything on this page, you can do yourself, at no cost, for as long as you drive. no paywall on your own garage.
it started with cars that lied.
every used vehicle I've bought came with a story. sometimes the previous owner told it straight. more often they didn't, or they didn't know it themselves. either way, the end of the story was the same: I bought the car and a month later started planning parts replacements.
the kicker is that when it's been my turn to sell, I've been just as bad. I meant to keep a log. I didn't. by the time I handed over the keys, I was trying to remember when and what I did to the car.
if I couldn't tell my own vehicle's history, the next owner sure couldn't. that's the gap ddpc fills.
vehicle history reports already exist. they just aren't for you.
today, the most-used vehicle history products are built for dealers and insurance companies. they buy the data from shops, dmvs, and accident reports, then sell access back to anyone shopping for a used car. you, the owner, are the source. you're also the one paying for a copy of your own car's story when you're ready to sell it.
ddpc inverts that. the owner logs. the owner owns the record. the owner decides who sees it. when the car changes hands, the record can travel with it. handed off, not bought back.
how it works today
data → industry → buyer
shops, dmvs, and insurers feed reporting agencies. agencies sell reports to dealers and the next buyer. you get whatever filtered through.
how ddpc does it
owner → record → wherever you point it
you log it. you own the file. when you're ready to sell or hand it off, the record goes with the car. verifiable, exportable, yours.
the small loop
reactive ownership is expensive.
you find out about parts at the end of their life when you weren't budgeting for the replacements. the tires are already unsafe. the filter is already clogged. the rotors are already pulsing at highway speed.
track the data and the loop inverts. you budget for changing your tires before they're unsafe. you replace the filter because you're near max recommended mileage, not because it clogged and left you stranded. you see the rotors coming in a vibration trend instead of on the shoulder.
this is the smallest thing ddpc does: pay attention to your vehicle, and the vehicle pays you back in money you don't spend and days you don't lose.
the big loop
one log isn't much. a million is a map.
your personal record (fuel economy, service intervals, the battery you bought last february, the tires you'll budget for next spring) is useful on its own. aggregated with everyone else's, it becomes something the industry can actually see.
a specific platform still running strong a decade in. an aftermarket part spec with provable demand. a region where enthusiast shops have a real book of future work. an oil viscosity that isn't dying yet, no matter what the bulletin says.
that signal is how parts stay in production, how specialists stay in business, and how the vehicles we actually want to keep stay keepable.
how we handle your data
aggregated, not exposed.
the demand signal we just described only works if it's honest. that means real records from real owners. it also has to work without turning your file into someone else's asset.
so the line is simple: your records stay yours. industry-facing trends are aggregated, anonymized, and stripped of anything that traces back to you, your vin, or your address before they leave your file. we're publishing patterns, not garages.
full details live in our privacy policy. the short version is on this page.
you don't need the grand theory to start.
you need a log entry.
but if you want the grand theory, it's on the #driveyourself page. tldr: the number of people driving themselves is going to shrink. the only thing that slows that shrink is demand that's visible and organized. that's what ddpc is for.
your vehicle file belongs to you. we never sell individual data. aggregate data is opt-in only. how we use your data →