Overview

• Marc Marquez set the fastest lap time of 1:35.876 on his Ducati during the Jerez test, leading both the combined and afternoon sessions.
• Ducati confirmed it did not test its GP25 chassis or aero package, instead focusing on minor updates like electronics improvements.
• Yamaha introduced a new engine specification that Fabio Quartararo described as slightly faster without compromising agility, though further development is needed.
• Aprilia tested rear aerodynamic components, including winglets and a new swingarm, aimed at improving stability during braking and acceleration.
• Regular riders Jorge Martin, Miguel Oliveira, and Franco Morbidelli were absent due to injuries, while several test riders experienced crashes without sustaining injuries.