It stands for "Alta Velocidad Rueda Independiente Ligero" (roughly translated as "Light High-Speed Independent Wheel").

[1] Other details:[3] Talgo presented the Avril concept at the InnoTrans fair in Berlin in September 2010.

[5] In May 2017, Renfe Operadora ordered 15 more train sets, with the Avril's entry into service expected in 2020,[6] delayed to March 2024.

[8] From 21 May 2024, Renfe schedules new AVE services to the Spanish regions of Asturias and Galicia, operated by variable gauge Talgo Avril trains under the class name S-106.

[10] A Talgo Avril train reached 360 km/h top-speed on the Ourense-Santiago de Compostela high-speed line on Iberian gauge as part of homologation testing.