Apr.24 (GMM) McLaren test driver Pedro de la Rosa is sure that the improvements made to the Renault package are not going to propel countryman Fernando Alonso to the podium at the Spanish grand prix.

"They do look like they have improved, especially on the long runs, but I don't think it will be enough to be at the level of the top teams," the 37-year-old said at a sponsor event in Madrid.

De la Rosa insists that Ferrari, McLaren and BMW will remain ahead of the pack at the Circuit de Catalunya.

Elsewhere on PR duty in Spain, Williams driver Nico Rosberg said Alonso is not going to feature prominently at Barcelona this weekend.

"There are three top teams that are unbeatable," the German said, "and then Alonso has maybe the slowest car of the middle pack.

"He will be fighting only for the last points. I think that, generally, we (Williams) are ahead of them," Rosberg added.