YMM fitment data, TecDoc vs SEMA Data Coop, which do I pick?

Both are industry-standard vehicle databases, but they cover different markets and price differently:

• TecDoc (owned by TecAlliance), the European standard. ~80,000 vehicle records, deep coverage of EU makes (VW, BMW, Mercedes, Stellantis, Peugeot). Most EU-based aftermarket distributors run on TecDoc. Licensing: ~€3k, €15k/yr depending on scope. Magento integration via XML feed import on a daily schedule.
• SEMA Data Coop, the US standard. ~100,000+ vehicle records covering US makes (Ford, GM, Stellantis-NA, Toyota-USA, Honda-USA), light trucks, motorcycles, ATVs. Coverage of EU makes is shallow. Licensing: ~$2.5k, $8k/yr. Format is ACES (Aftermarket Catalog Exchange Standard) + PIES (Product Information Exchange Standard).
• Hybrid, for global brands, license both and merge in Akeneo PIM before the data hits Magento. Adds ~$5k, $10k of one-time integration work but covers ~95% of global vehicle parc.

Magento side: vehicle records become a custom entity (auto_vehicle) with attributes year, make, model, trim, engine, drive-type. Product-to-vehicle compatibility is a many-to-many junction table. Layered nav filters by selected vehicle. I default to SEMA Data Coop for US-only stores, TecDoc for EU-focused stores, hybrid above $10M GMV with global ambitions.