Mercedes expects 2015 Red Bull Formula 1 resurgence

After its dominant 2014 F1 campaign, Mercedes is optimistic that it can claim more success this year, despite expecting a tougher time from rivals.

Niki Lauda, Mercedes' non-executive chairman, thinks that Red Bull could well return to form after a challenging 2014, with its engine partner Renault predicted to make gains.

"[Red Bull] will be right there, but the question is how far they get," Lauda told AUTOSPORT.

"There is too little information about Ferrari at the moment, and McLaren-Honda will experience a difficult year."

Although a change to the engine rules over the winter, allowing in-season development, has been viewed as a boost to Mercedes' rivals, Lauda sees no cause for alarm.

"Mercedes AMG is of course in an excellent position, but we want to improve everything, and so do the others," he said.

"I would suggest you can only judge the quality of the field after the first three races.

"Everyone in Brackley and Brixworth is extremely busy right now, as usual, but everything is on schedule.

"What I do not understand is the fact we will have three tests in Spain again and none in the Gulf area which would be a much better preparation for Melbourne weather - and temperature-wise."

NO ALARM OVER HAMILTON CONTRACT

One thing Mercedes has not done this winter is finalise world champion Lewis Hamilton's new contract.

Although it had been expected to be done after last season, Lauda insists the fact the situation is still unresolved is no cause for concern.

"He was on holidays, the team is in the middle of preparing the cars for this season," Lauda said.

"Both sides declared they want to continue together.

"Toto [Wolff] takes care of this and it will happen."