Testing gets underway in Bahrain on Wednesday where reigning World Champions Red Bull and engine supplier Renault are hoping for better.
Although Sebastian Vettel is still ranked as the man to beat by top online sportsbook, the German's first test of the pre-season was anything but successful.
Red Bull Racing and their Renault engine struggled with overheating and other issues resulting in just 21 laps over the course of the four days at Jerez.
Renault, though, vowed to fix their "few issues" and will head to Bahrain confident of better but concede that they have some ground to make up.
"We're still behind schedule, but it's not a question of months," head of track operations Remi Taffin told the Guardian.
"We are at least where we would have sought to be for the first test, so maybe now we are three weeks behind, and now we are on a recovery plan.
"We're now going to go into Bahrain with what we would have liked to have finished the first test with.
"As for our rivals, let's put it this way, they are probably four days ahead of us as they had a proper test in Jerez, and we didn't."
However, the French engine supplier, who won the last four Championships with Red Bull, won't know for sure until Wednesday's running at the Sakhir circuit.
Vettel is remaining optimistic.
"It is better to have the problems now in the test than later in the race," said the reigning World Champion.
"I hope that Bahrain is better."
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