F1′s major engine manufacturers want the FIA to drop regulations that guarantee customers for their rivals.

Currently, there are four engine makers on the grid — Ferrari, Mercedes, Renault and Cosworth. The latter independent supplier, however, is reportedly fighting for customers for 2012 and beyond, with Williams switching to Renault and rumours HRT could follow Team Lotus in also ending its association with Cosworth.






















Lotus had to pay to be released from its 2011 contract with current engine supplier Cosworth. The parties agreed in principle at Monza last month to terminate the agreement, amid widespread reports Lotus is set to announce a comprehensive technical deal with Renault. 




