Digital Maintenance Passport

Every vehicle has a story.
We keep the record.

CarTethra is the permanent, verified, AI-powered service history that follows a car from its first oil change to its final sale — built for owners, dealerships, and manufacturers alike.

290M
US registered vehicles
$500B
Annual maintenance spend
$10B+
Total addressable market
Passport No. CT-0294-7731
Issued 2026
VIN 1HGCM82633A004352
2021 Toyota RAV4 XLE Owner-controlled · Verified history
Oil & Filter Change
32,108 mi · Certified Partner Shop
Verified
Brake Pad Replacement
41,520 mi · Certified Partner Shop
Verified
Timing Belt Service
58,900 mi · AI-Scanned Receipt
Verified
How CarTethra Works

One VIN. One passport. A record that never gets lost.

01

Link a vehicle to its VIN

Every passport is anchored to the vehicle's VIN — not an account, an app, or a single owner — so the record survives every sale and transfer.

02

Capture service records automatically

Snap a photo of any receipt and CarTethra's AI extracts the service type, date, mileage, and cost — no manual entry required.

03

Verify through certified shop partners

Records logged by a certified CarTethra partner shop are marked "Verified" — giving buyers and dealers data they can actually trust.

04

Get predictive maintenance & cost-to-own insight

CarTethra cross-references OEM-recommended schedules with real history to flag upcoming service and compare cost-to-own across vehicles.

For Vehicle Owners

Protect the resale value of every car you own.

Your maintenance history is one of the most valuable things you own — and the easiest to lose. Build your passport in minutes and never lose a record again.

  • Scan receipts in seconds — AI does the data entry
  • Get reminders based on OEM service intervals
  • Share verified history instantly at sale time
Create your passport
9:41●●●●●
Passport · CT-0294-7731
2021 Toyota RAV4 XLE
Oil & Filter Change
32,108 mi · Verified
Brake Pad Replacement
41,520 mi · Verified
Tire Rotation Due
~2,400 mi remaining
Soon
For Dealerships & Manufacturers

Appraise with confidence. Sell with proof.

Pull a verified passport at trade-in to spot deferred maintenance before you take on risk, and merchandise inventory with a "Verified History" badge buyers trust. Manufacturers get aggregated, privacy-respecting maintenance trends by make and model.

Partner with CarTethra
2026 → 2028
100 → 2,000 certified partner shops in the network
5K → 250K active passport users
The Problem

Maintenance records are scattered — and everyone pays for it.

Service history lives across dealerships, shops, paper receipts, and glove boxes. CarTethra brings it all under one VIN-linked record.

Owners

Lose track of 60–70% of service records over a car's life, and sell well-maintained vehicles for the same price as neglected ones.

Buyers

40M+ used vehicles change hands yearly with no verified maintenance history — only seller claims that can't be checked.

Mechanics

Repeat diagnostics that a documented history would answer instantly, wasting time on every new vehicle that comes through the bay.

Dealers & OEMs

Can't accurately appraise trade-ins or understand fleet health without a trusted, verifiable service record tied to the VIN.

Not Another Carfax

Accident history and maintenance history are different problems.

Carfax tells you what happened to a car. CarTethra tells you how a car has been cared for — and what it needs next.

Capability Carfax CarTethra
Accident & title history Yes
Ongoing maintenance & service log Limited Core focus
AI receipt scanning No Yes
OEM-recommended service schedules No Yes
Cost-to-own comparison tool No Yes
Verified by certified mechanic network No Yes
Owner-controlled, VIN-linked record No Yes
2026 – 2028 Snapshot

Built to scale with the network it verifies.

5K → 250K
Active users, 2026 → 2028
100 → 2,000
Certified partner shops
$250K → $11M
Annual revenue
40M+
Used vehicles sold yearly
Early Access

Be first to give your vehicle a permanent record.

CarTethra is opening early access to owners, shops, and dealership partners ahead of our 2026 launch.

Thanks — you're on the list. We'll be in touch before launch.

No spam. We'll only email you about CarTethra access and launch updates.