Fernando Alonso believes McLaren will continue to improve in the early stages of the season.
Both Alonso and team-mate Jenson Button have appeared cautiously optimistic over the winter but the Spaniard admits there is still work to do.
There are no more pre-season tests and McLaren have already confirmed they will still be working on the MP4-31 car when the new campaign gets underway in Australia, but Alonso remains upbeat regardless.
"There is still potential to unlock in terms of performance and in terms of [what] will come in the next engine," he is quoted as saying by Crash.net. "And then, on the chassis side, there are many things to be tested. Some new concepts that we have in the car aerodynamically, some new redesign at the back end of the car that we keep studying and we keep understanding how to use that area to maximise the potential. So we'll see."
He added: "I am happy with the job we did these last two weeks, but I am sure that, in the first two or three races, more potential will come just because we secure more and more track time."