With his tumultuous 2010 season behind him, Jarno Trulli has admitted he is still concerned about reliability.
The Italian veteran completed only a handful of laps in the new Team Lotus T128 in Barcelona on Thursday.
"At the moment we have many things that are not right and that give rise for concern," he is quoted by the Dutch website f1today.nl.
"We have a lot of problems for the first race and in this respect the cancellation of Bahrain is for us very welcome," added Trulli.
He insists, however, that he is still confident.
"We have many new parts for this year and also many things we can do to improve during the season, so let's wait quietly.
"I'm sure there is still a lot to come before the first race. I am confident about taking part in the middle of the field this year," added Trulli.