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Meta ends Nielsen DMA support for automotive ads - what it means for car advertisers
- Meta will end Nielsen DMA targeting for automotive ads and replace it with Comscore Markets in the catalog feed.
- Advertisers must use comscore_market_codes in their vehicle offer feeds to continue delivering ads.
- The migration timeline begins March 23, 2026, when feeds can be updated with Comscore Market IDs.
- A warning phase starts April 20, 2026 for feeds still using dma_codes, with campaigns continuing to run.
- The June 22, 2026 cutoff will pause campaigns that still rely on dma_codes until feeds are updated.
- Meta introduced Comscore Markets to its automotive infrastructure in August 2025 as part of a broader measurement shift.
- Campaigns can manage feed updates via Catalog Manager or Marketing API to migrate to Comscore Market IDs.
- Meta's transition aligns automotive targeting with Comscore's local market measurement framework.
- Advertisers should use the Product Feed Debug Tool to validate feed migrations before live uploads.
- The change affects only US geographic markets; Comscore Markets covers 210 DMAs with mapped equivalents to Nielsen DMAs.
- Meta's broader platform changes accompany the Comscore transition, including updates to Graph API and Marketing API.
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