Mercedes team principal Ross Brawn has lamented the split within the Formula One Teams' Association, saying the sport may come to regret it.
Ferrari, Red Bull, Sauber and Toro Rosso all pulled out of the organisation late last year following a dispute over the controversial Resource Restriction Agreement.
Brawn reiterated Mercedes' commitment to FOTA and warned that the decision by the breakdown could cost Formula One in the long term.
"We are very committed to FOTA and we think it's a great shame that we've lost the members from FOTA because I think we may live to regret that," Brawn told ESPNF1.
"I think when there was a crisis and outside pressure it pushed FOTA together, now that there's not so much outside pressure the natural competitiveness of the teams is pushing us apart a bit.
"But I think we are very short-sighted in not recognising that FOTA has a very important role to play. I think it is an unfortunate feature of Formula One that we all find it fairly difficult to come together.
"I'm a great believer in FOTA but I'm disappointed, obviously, with what has happened in the last few months. I think we're going to regret it in Formula One because one of the objectives of FOTA was to find the right solutions for Formula One, not just the right solutions for an individual team."
