Tesla’s most lucrative European revenue stream just got significantly thinner. Toyota and Stellantis — two of the largest contributors to Tesla’s EU CO2 emissions pool — are pulling out for the 2026 compliance year.
What Changed
EU documents published in early March 2026 show the pool has contracted from eight members to five. For 2025, the pool included Toyota, Stellantis, Leapmotor, Ford, Honda, Mazda, Subaru, and Suzuki. For 2026, only Tesla, Ford, Honda, Mazda, and Suzuki remain.
The financial impact is substantial. UBS analysts estimated the full 2025 pool could have generated over EUR 1 billion for Tesla in Europe alone. Globally, Tesla’s regulatory credit revenue already fell 28% from $2.76 billion in 2024 to approximately $2 billion in 2025.
Why Toyota Left
Toyota’s departure is straightforward: the company no longer needs Tesla’s credits. Toyota has maintained a high proportion of hybrids in its European fleet for years and has progressively reduced its high-emission models. The company expects to meet 2026 CO2 targets independently — a milestone that reflects how far the broader industry has moved toward electrification, even through the hybrid route.
Why Stellantis Left
Stellantis is taking a different approach. Rather than paying Tesla, the group is leveraging its majority stake in Chinese EV maker Leapmotor to form an exclusive two-company pool. Leapmotor delivered over 17,000 vehicles in Europe in Q4 2025 alone, providing sufficient zero-emission credits to offset Stellantis’s remaining fleet emissions.
This is a strategic shift: Stellantis now has its own captive credit supplier rather than enriching a competitor.
Double Hit from the US
The EU pool shrinkage compounds losses already sustained in the United States. The US eliminated its emission credit market in 2025, costing Tesla an estimated $1.4 billion in annual revenue. Combined with the EU pool contraction and a three-year extension of European compliance timelines (which reduces urgency for remaining pool members), Tesla’s regulatory credit business faces structural decline.
What It Means
Regulatory credits have been pure-margin revenue for Tesla — no vehicles need to be built, no service provided. The erosion of this revenue stream puts additional pressure on automotive margins at a time when Tesla is already cutting prices to compete in Europe and investing heavily in AI and robotics.
For the remaining pool members — Ford, Honda, Mazda, and Suzuki — the calculus still works. These manufacturers have slower EV transitions and need Tesla’s credits to avoid EU fines. But the direction is clear: as the industry electrifies, the pool will continue to shrink.