Pastor Maldonado believes Lotus have taken a "huge step forward" in terms of reliability after an excellent day one in Barcelona.
The Enstone squad didn't have the best of seasons last year and they also made a slow start to the 2015 campaign as their E23 arrived a day late at the first pre-season test at Jerez.
Maldonado must've thought "here we go again" as he caused two red flags in the morning session at the Circuit de Barcelona-Catalunya on Thursday, but it turned into a very good day as he topped the timesheets with a 1:25.011, finishing ahead of the Ferrari of Kimi Raikkonen.
However, more impressive was the fact that he managed to complete 69 laps.
"We had some sensor problems, [but] from my point of view in terms of reliability it's a huge step forwards from last year, we saw that in Jerez, [the] new car [was] running immediately, it's positive," he is quoted as saying by GPUpdate.net.
"The day was good, [I'm] happy, but it's not enough so we need to try and improve."
Maldonado's P1 will no doubt raise a few eyebrows, but the Venezuelan insists Lotus are just focusing on their own programme.
"We don't know [what] the other teams [are doing], the level of fuel, what we know is we've been always doing long runs, around 10-12 lap runs," he said.
"We had fuel enough to do some different tests and some good laps, after the laps even to do some long runs, to check temperatures and many things, so we still are checking things in the car. It seems like we are understanding the car and improving step by step."