Although Jenson Button feels McLaren have made a "big step forward", he concedes that they have yet to show their full potential.
Heading into round four of the championship, McLaren have just one point on the board and that came courtesy of reserve driver Stoffel Vandoorne, who replaced Fernando Alonso in Bahrain.
Neither regular race driver has managed a top-ten result with Button admitting that although McLaren have made strides forward, they have yet to put in a perfect display.
"[We are] not doing a good enough job possibly," said Button.
"The last race was difficult 12th and 13th and you don't want to be there as a driver. But compared to last year every car finished. Big step forward compared to last year.
"In terms of where I think we are our qualifying pace has been reasonable but I still don't think we have shown our full potential.
"We have been close to Q3 but circuits like this don't help."
The Brit, though, is hoping to see improvements in the coming weeks, confident that McLaren will get it right.
"When we get back to Europe it should be easier to show our pace in qualifying and hopefully the race," he added.
"You want more, you always want more. For us having something coming in new in every race is moving in the right direction.
"When we start scoring points on regular basis we'll be a lot happier, but that hasn't happened yet.
"We're a lot closer to the other manufacturers which is great. In terms of outright power, I don't know."