Despite topping the first day of the Buriram Test, Marc Marquez has pointed at some major issues with the GP25 engine.

After the first day of the Buriram Test Marc Marquez stated Ducati is leaning towards the GP24 engine as the new GP25 version has 'very weak points'.

Following on from the opening round of the 2025 MotoGP season there will be engine freeze for all non-concession manufacturers. The freeze will last until the 2027 MotoGP season, which has left Ducati in a difficult situation.

The new GP25 engine has some obvious weak points for the riders that have tested in Sepang and Buriram. Marquez now believes that Ducati can't 'take the risk' with the GP25 engine and must use the GP24.

"I mean one thing is the engine and the other thing is all the small pieces that we have, new pieces," Marquez said after topping day one of the Buriram test.

"Today basically we concentrated most of the day to 2024 engine, because looks like if tomorrow doesn’t change a lot, it looks like it is the way [for the season].

"Why? Because Ducati is very realistic and they know, and they are very smart, that we cannot take the risk to homologate an engine that if we are not 100, 100% sure is better than 2024 because if we homologate the engine we homologate it for two years.

"So, we understand from the first day to today that the 2025 is a little bit more up and down: very strong in some points, [but has] very weak points.

"So, they have the experience to use the 2024 in different race tracks. They won 16 races last year, so that means that the bike was in a very good base. And it looks like now we are going into that base, but tomorrow we will reconfirm.

"But I feel super good on 2024 base. When I say 2024, it’s the 2024 bike. It’s the base of 2024, the engine, but they work a lot on very small items that we are introducing to that engine now."