Dealer Website vs AutoTrader vs Facebook Marketplace: Where Should You Advertise Your Stock?

The three channels at a glance

Reach vs control — the core trade-off

Every advertising channel sits somewhere on a line between reach and control. Marketplaces give you reach: AutoTrader in particular puts your stock in front of a vast, ready-to-buy audience that you'd never assemble on your own, which is exactly why it belongs in your mix. Facebook Marketplace adds a different kind of reach — free, local and high in volume, catching casual browsers who aren't necessarily on a dedicated car site.

What a marketplace doesn't give you is control. Your listing lives in someone else's format, next to your competitors, on their terms. Your own website is the other end of the line: less instant reach, but total control over how your stock is presented, who the enquiry belongs to, and what you can build on top of it. Neither end of that line wins on its own — you want both, which is why the smart play is to combine them.

What each channel really costs

The honest way to compare cost isn't the headline fee — it's the cost per quality enquiry once you factor in your time, your margin and whether the lead is yours to keep. On that measure, your own website often quietly becomes your best-value channel over time, because the enquiries it earns organically carry no per-lead cost at all.

Who owns the enquiry (and the data)?

This is where the channels differ most, and it matters more than dealers often realise. A marketplace enquiry comes to you, but the relationship and the audience sit with the platform. A Facebook Marketplace message lands in Messenger with none of the dealer tools you'd want around it — no finance journey, no part-exchange capture, no reporting. An enquiry through your own website is entirely yours: you see the exact vehicle and finance option the buyer was viewing, you keep the data, and you can follow it up and market to that customer again.

Over a year, that difference compounds. The channel that hands you the customer data is the one quietly building the most valuable thing you own — a base of buyers you can reach directly, at no cost, again and again.

Why this isn't an either/or — the hub-and-spokes approach

The mistake is treating these as rival options fighting over one budget. They're not — they're spokes around a hub. Your website is the hub: the destination every other channel points back to, where your full stock, brand and enquiry tools live. AutoTrader and Facebook Marketplace are spokes: they extend your reach and funnel interested buyers toward that hub.

How your website ties it all together

Running three channels only works if it doesn't mean doing the job three times — and that's exactly what a proper platform solves. With DealerWebs, you add a vehicle once and it flows out everywhere it needs to be. As an AutoTrader partner, we connect your stock straight through to AutoTrader via AutoTrader Connect, push it to your social channels, and keep everything in step through stock feeds and inventory export. One update, published across your hub and every spoke.

That's the difference between three channels that fight for your time and three that work as one system. It also means your social presence stays current without extra effort, so the casual scroller sees fresh stock and a route back to your site.

A rough recommendation by dealer size

The bottom line

Where should you advertise your stock? Realistically, in more than one place — because each channel reaches a different buyer in a different frame of mind. AutoTrader wins you reach, Facebook Marketplace adds free local exposure, and your own website turns that interest into direct, full-margin enquiries while quietly building the brand and data you own. Put your website at the centre and let the marketplaces feed it, and you stop choosing between channels and start getting the best from all of them.

For more on this, it's worth reading whether independent dealers still need their own website and who really owns your leads, data and brand. When you're ready to get more from every enquiry, see how to advertise your used car stock online.