California vehicle registration data for Q1 2026 from the California New Car Dealers Association shows Tesla registrations fell 24.3% year-over-year — more than 10,000 fewer vehicles — while the state's zero-emission vehicle (ZEV) market share slipped to 13.7%, the lowest reading since late 2021.
- Tesla registrations down 24.3% year-over-year in Q1 2026
- Over 10,000 fewer Tesla vehicles registered in California vs. Q1 2025
- California ZEV market share fell to 13.7%, lowest since Q4 2021
What happened
The California New Car Dealers Association's Q1 2026 Auto Outlook report shows Tesla registrations in the state declined 24.3% compared with the same quarter last year, representing a drop of more than 10,000 vehicles.
At the same time, California's overall zero-emission vehicle market share fell to 13.7%, the weakest quarterly share reported since Q4 2021.
Why it matters
California is a critical market for electric vehicles, so a double-digit decline in registrations for Tesla and a retreat in ZEV share could signal cooling demand, shifting buyer preferences, or competitive and market-pressure dynamics that affect automakers and policymakers.
Automakers, dealers and state policymakers monitor these metrics closely because sustained weakness in California could influence pricing, inventory strategies and the design or urgency of incentives aimed at supporting ZEV adoption.
What to watch next
Look for Q2 registration and sales reports to see whether this trend continues or reverses; pay attention to changes in Tesla deliveries, regional inventory levels and offers that could affect short-term registration figures.
Also monitor state-level policy moves, incentive adjustments and competitor model launches in California that could alter demand for ZEVs and shift market share among EV makers.