BYD has entered into a memorandum of understanding with ExxonMobil to expand their long-standing partnership in hybrid electric vehicle (HEV) technology. The agreement encompasses joint research and development initiatives focused on next-generation battery chemistries and powertrain components, collaborative work on international technical standards for hybrid drivetrains, and coordinated efforts to strengthen global supply-chain logistics for critical raw materials. The two companies will also establish a shared innovation center in Shanghai by mid-2026, with an initial investment of $150 million aimed at accelerating HEV system integration and improving fuel efficiency by up to 15% compared with current benchmarks.

In December 2025, BYD recorded 27,678 passenger-vehicle registrations in Europe, marking a 229.7% increase compared with the same month a year earlier. Year-to-date deliveries reached 187,657 units, up 268.6% from the prior year, enabling BYD to surpass its competitors and claim the top spot among global electric-vehicle manufacturers for the first time. The automaker’s rapid expansion contributed to Chinese brands capturing a record 12.8% share of Europe’s auto market. Domestically, however, December sales totaled 420,398 vehicles, representing an 18.34% decline year-over-year as consumer preferences shift toward export markets.