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Formula One commercial chief Bernie Ecclestone says he expects to get agreement to change the sport's "unacceptable" engine rules, despite leading team Mercedes being opposed to any alteration.

Ferrari and Red Bull have led the charge against the sport's new fuel limits which restrict usage to 100 kilograms per car per race, with the flow never exceeding more than 100 kilograms per hour. The muted sound of the new 1.6 liter V6 turbo hybrid engines has also attracted criticism.

Speaking Sunday ahead of the Bahrain Grand Prix, Ecclestone says: "They can do something about the noise, and they need another 10 kilos of fuel or something. I think everybody will agree to that."