Cosworth and Lotus have signed the termination of their engine supply agreement, completing the deal which was established in principle after the Italian GP.
Cosworth said in a statement that its support of Lotus Racing will cease at midnight on 30th November 2010.
"The decision to bring the partnership to an early termination has been driven by the team's desire to solve reliability and performance issues unrelated to the Cosworth engine," said Cosworth in the statement.
"Lotus Racing and Cosworth have agreed settlement terms satisfactory to both parties to secure an early termination of the agreement.
"Cosworth wishes Lotus Racing success in the future, and will continue to supply engines to AT&T Williams, Virgin Racing and HRT in 2011, thereby supporting 25% of the teams in Formula 1."
The move paves the way for Lotus to sign a deal with Renault, with whom the team has reached an agreement in principle for a supply of engines.
Autosport has produced a standalone special magazine to celebrate our 70th birthday. All current print subscribers will receive a copy for free. To order your copy of the 196-page Autosport 70th Anniversary issue, please go to: autosport.com/autosport70th