Augusto Fernandez will be back on track this weekend at the Malaysian Grand Prix and will continue testing Yamaha's V4 engine.

For the second time in the 2025 MotoGP season, Augusto Fernandez will wildcard with Yamaha's V4 Prototype M1 this weekend at the Malaysian Grand Prix.

The Spaniard has been testing the machine for the Japanese manufacturer and has appeared at the San Marino Grand Prix, where he finished inside the points in 14th place.

This weekend will be a whole new challenge for Fernandez and the Yamaha Factory Racing squad, as they will tackle the severe heat that comes with the Malaysian Grand Prix at the Sepang International Circuit.

The extreme conditions that are expected at the Malaysian Grand Prix will allow Yamaha to stress test their new engine before deciding if it will be used in the 2026 MotoGP season.

Fernandez has not tested the Yamaha M1 since the Misano Test, before the flyaway rounds began. He will not be expected to search for positive results, but rather positive data.

"I'm happy to be back racing. After the GP in Misano, it has been a long time, but I'm very excited about the upcoming weekend," Fernandez said.

"We will keep improving the package of our V4-powered prototype. We're back on track and racing again. I missed riding the V4-powered prototype so much, and I can't wait to start the weekend and see what's possible.

"But, of course, it's going to be another weekend of developing the prototype bike, so the main target is to be ready for the next season."