Transitioning to Comscore Markets for automotive model ads

Beginning on June 22, 2026, we will discontinue the use of Nielsen’s Designated Market Area (DMA) for automotive model ads. Comscore Markets®, which we introduced in August 2025, will serve as the replacement solution. After this date, campaigns still using Nielsen’s DMA for automotive model ads targeting will be paused and require an update to Comscore Markets® to resume delivery.

This transition to Comscore Markets® allows us to provide advertisers with a partner solution that is more sustainable and scalable for long-term performance and measurement. Below is a detailed timeline to reference during this transition:

Timeline:

• Beginning March 23, 2026, advertisers will have the ability to update their vehicle offer feed, allowing you to:
  • Update your vehicle offer feed to include Comscore Market IDs column instead of dma_codes.
  • Mapping: Facebook provides a mapping table to convert dma_codes to Comscore Market IDs.
  • Validate your feed to ensure all DMA codes are correctly mapped and the new field is formatted as an array of strings.
  • Upload your updated feed through Catalog Manager or the Marketing API.
  • Monitor vehicle offers to confirm correct regional targeting.
• On April 20, 2026, a notification will be issued during feed ingestion for Catalog Ads if dma_codes is still included in the vehicle offer feed.
• On June 22, 2026, Nielsen’s DMAs will be removed from all Meta targeting and reporting solutions.
• All existing campaigns using dma_codes for Automotive Ads will stop delivering and will need to be updated with Comscore Market IDs replacement before the campaign can be restarted.

Example Feed Update

CSV Example:

vehicle_offer_id,make,model,year,offer_type,title,comscore_market_codes

offer123,Toyota,Camry,2024,lease,$299/month lease,"[\"2001\",\"2004\",\"2025\"]"

<listing>
 <vehicle_offer_id>offer123</vehicle_offer_id>
 <make>Toyota</make>
 <model>Camry</model>
 <year>2024</year>
 <offer_type>lease</offer_type>
 <title>$299/month lease on 2024 Toyota Camry</title>

 <comscore_market_codes>2001,2004,2025</comscore_market_codes>
</listing>

Updating Vehicle Offers via API

"vehicle_offer_id": "offer123",
  "make": "Foo",
  "model": "Bar",
  "year": 2024,
  "offer_type": "lease",
  "title": "$299/month lease on 2024 Foo Bar",
  "comscore_market_codes": ["2001", "2004", "2025"]