How does Keuro work?

When do you use it?

You're car-shopping and one catches your eye. Looks nice, but what's it actually worth? Type the make, model and year. You'll know within two seconds whether the price is sharp. Whether you spotted it on AutoScout, Marktplaats, or got a tip from a friend, look it up here.

What is a great deal?

We compare each listing only against truly comparable cars: same make, model, year, fuel and roughly the same power (rounded to 10 hp). Within that pool we look at price and mileage together. Only when both line up does the rating actually mean something.

• Great deal! Price in the cheapest 25% AND mileage not at the high end. Sharp price for what you're getting.
• Average Mid-pack, or a price that lines up with the mileage.
• Pricey Price in the priciest 25% AND mileage not exceptionally low. Seller is asking on the high side.

Why price AND mileage together?

A low price on a high-mileage car says nothing: it's just been driven hard. A high price on a very low-mileage car isn't bad either: rare low km commands a premium. Looking at both axes together filters that noise out, so only truly cheap-and-clean or expensive-and-driven listings end up with a verdict.

If we don't know a listing's fuel or power, or there aren't enough comparable listings (fewer than three) in that exact pool, we fall back automatically to all listings for the same make, model and year. A looser comparison, but never no verdict at all.

Watch out at the very low end: extreme prices usually have a reason. Damage, an awkward option set, or something the seller didn't put in the listing. That investigation is on you. Keuro just tells you where the price sits, not whether the car is worth it.

How does option impact work?

A panoramic roof or a tow bar does something to the price. We compare listings with and without each option within the same make-model-year cohort, and compute the price difference. On the car page you can tick options to see how your estimate shifts.

Sometimes it surprises you. Not every option makes a car more expensive. Some options correlate with cheaper trims and look like they reduce price. It's a correlation in the data, not a fixed surcharge: the more listings we have for a car, the more reliable it gets.

Filters: tuning the estimate

You can filter at three levels depending on the page you're on. The year page filters most sharply; brand and model pages zoom out.

Year page

The filter panel sits on the left. Enter your own mileage and optionally pick exterior colour, interior colour and body shape. The price indication in the middle is recomputed live across the listings matching your selection. Below it, tick options (panoramic roof, tow bar, ...) to see how they shift the price.

Model page

On a model page (e.g. all Volkswagen Golf listings) you set a year range. Handy for comparing generations without picking a specific year first.

Brand page

On a brand page you tick the models you want to include. The price distribution and the model table adjust to your selection.

From the homepage?

The search bar at the top takes make, model and year. Make only → brand page. Make plus model → model page. All three → straight to the year page. Don't have the car yet? We scrape the listings while you wait.

Sources

Right now we scrape AutoScout24. Marktplaats is on the roadmap. Other sources we add case by case.