Why so many valuation tools want your email first
A car valuation costs almost nothing to run once the pricing data exists. What costs money is turning a visitor into a lead a dealer can call. That's the real business model behind most of the big comparison sites: the number on screen is a hook, and your email and phone number are the product.
Not every tool works that way.
| Type of tool | Personal details required | What you actually get |
|---|---|---|
| Dealer group valuation form | Name, email, phone, often postcode | A range, then follow up calls for weeks |
| gov.uk MOT history checker | Reg plate only | Full test and mileage history, no valuation |
| Comparison aggregator sites | Email required to reveal the number | A range, plus your inbox sold to partners |
| Verified marketplace valuation | Reg or make/model, mileage | An instant range, details only if you list the car |
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What a valuation actually needs to be accurate
Strip away the marketing and three things drive the number: what the car is, how far it's gone, and its condition on paper.
- Registration plate, or make, model and year if you'd rather not type it in.
- Current mileage, ideally matched against the last MOT reading.
- MOT history: any advisories, and whether it's passed cleanly the last two times.
- Trim level and any factory options, which move the number less than people expect.
Check the free bits yourself before you type in a single detail
You can pull a car's full MOT and mileage history on gov.uk with nothing but the reg plate. No account, no email, no phone number. It won't give you a price, but it tells you whether the mileage story adds up, and that's half of what sets the value anyway.
When handing over your details is actually worth it
Keeping your contact details out of a form makes sense while you're just checking a number. It stops making sense the moment you're ready to sell. A verified buyer marketplace still asks for contact details eventually, but only after you've seen the range and decided the car is worth listing, not before you've even seen a figure. That's the difference: details in exchange for a real offer, not details in exchange for a guess.
Get the range first, decide on the sale after
Run the free checks in this order: MOT history on gov.uk, then a reg based valuation that doesn't gate the number behind a form. Compare that range against what you'd get through a full UK car valuation, and only hand over your phone number once you're actually ready to talk to a buyer. See how the verified route works on the CARS4YOU get started page.
Value, compare and close with DriveMe
Exact price, verified sellers and an AI assistant, right in the app.