Although Lotus have punched above their weight without any major development, Pastor Maldonado feels they need big upgrades to move forward again.
The Enstone squad are sixth in the standings with 35 points after 10 races, already triple their total points tally from last year.
However, it has still been a season of frustrations for Maldonado and team-mate Romain Grosjean as between them they have failed to see the chequered flag on nine occasions.
Another reason for concern is the fact that the E23 hasn’t had any major upgrades due to the uncertainty surrounding Lotus’ Formula 1 future.
“The rear wing was just for Monaco – it was a high downforce one which is the same as we were using [in Hungary],” Maldonado said. “At this kind of track it is working, but maybe not in Barcelona.
“There have been no more upgrades since the beginning of the season – not big upgrades but, for sure, we have been doing a few things around the car but not big upgrades.”
Next up is the Belgian Grand Prix at Spa and Maldonado is hopeful the team will have some new developments after the three-week summer break.
“Hopefully, we can have [a big upgrade after the summer break],” he said. “It is not clear yet, but we must be very close to having a big one soon. It is the moment to do that, and it should be a good one, so hopefully we can get it soon.”
He added: “Everyone else has made steps but, if you look at our performance, even without any upgrades we always continue to be there, which is very positive.”