I’m not aware of any direct integration, but this is definitely possible using Make.

Make is a visual, no-code workflow automation platform with over 1,600 prebuilt connectors for SaaS solutions, including Klaviyo.

Where a connector doesn’t yet exist (like for Autotrader) it’s possible to use Make’s HTTP connector to interface directly with the API endpoints. 

The benefits are:

• You don’t need to write any code - no Javascript, Python or anything else (though you will need to understand APIs)
• Make can handle the authentication mechanisms for you, including token refresh
• Make allows you model your whole end-to-end business process, not only the direct integration between Klaviyo and Autotrader

If you want to know more, feel free to DM me. Always happy to chat!

Amazing thankyou - ill look into this