Car Buying Copilot
Guide users through finding, comparing, negotiating, financing, and buying a car.
Walks somebody through buying a car from the first shortlist to signing, and takes the side of the buyer at each step. It works out what is affordable, what the car is worth, what the dealer's financing actually costs, and what to say when the numbers move at the desk.
What a v1 does5 features
- A budget from income and existing payments, not from what a lender will approve
- Shortlist comparison on total cost of ownership rather than sticker price
- Financing compared side by side, with the dealer's offer as one of the options
- Negotiation scripts for the specific car, price and dealer
- A pre-signing check of the paperwork against what was agreed
The market
CarGurus takes around $232M a quarter from its marketplace, mostly from dealers, and draws 30 to 35 million monthly visitors. Carvana earns on the cars it sells. Neither charges shoppers to use it, so a $12 a month consumer subscription would be a different model to anything proven here.
Where these numbers come from
| Company | Earns | Reach | Source |
|---|---|---|---|
| Carvana | $20.3B revenue, 2025 (+49%) | 596,641 retail units sold, 2025 | Public filings |
| CarGurus | ~$232M marketplace revenue, Q3 2025 (+14%) | ~30–35M monthly unique visitors | Public filings |
| Cars.com | Public marketplace comp | Not published | Model, not a disclosed figure |
Why this audience
This audience arrives at the dealership having been warned about every trick, and still faces the desk alone. The content has built the scepticism; what it cannot do is stand next to them. Scripts and numbers for the specific car and offer is that support made portable.
Before it can launch
No licence, certification or data agreement stands between this and a launch — app-store review and an ordinary privacy policy aside.
How the pricing works
Paid for the two months somebody is actually buying a car, then cancelled. That is fine at $12 and fatal at $199 - the one-off price nobody pays before they trust the advice.
What it earns
Drag me Every figure recalculates as you go.
0.056% of 1.8M followers · capped at 50,000
Opens on the price this idea was costed at, $12.
1,000 paying — 0.056% of 1.8M followers — × $12 a month = $12,000 a month
Fifty thousand paying users is the ceiling every one of these pages is drawn against, not a forecast. It opens at a thousand, the bottom of the range, so the first figures you see are the modest ones. What the cap buys is comparability: the same range on every app, and the percentage of the audience it takes as the number that moves.
Is this the one for your audience?
We fund it, build it, and run it. You bring the audience and take a share of the revenue. Nothing to pay and nothing to build.
Car Sale / Resale Platform
Marketplace for buying and selling cars with pricing guidance and transaction tools.
Used Car Sale Aggregator
Aggregate used-car listings from multiple marketplaces with search, filters, and price comparison.
Road Weather Radar
Real-time radar and severe-weather information focused on driving routes.
Weather on Route
Show forecast conditions throughout a trip based on route and arrival time.
CarPlay Companion
Driving-focused utility for parking, fuel, maintenance, navigation, and vehicle information.