Daniil Kvyat is hoping he can rack up plenty more laps in the STR12 as there is "still a lot to discover" before the first test comes to a close.
Kvyat took to the wheel for the first time this season on Tuesday and finished P6 after completing two laps more than a Grand Prix race distance.
“It was quite a good day, the first time with a new car,” said Kvyat.
“Obviously [there’s] lots to discover, we ticked some boxes, but [there’s] still a lot to discover, there's some progress to be made in terms of how quickly we can turn things around and go [back] on track again and make more laps.
“So we need to start doing more laps but I think in terms of first couple of days, I think we’ve done a decent amount [of running].”
A close eye is being kept on the new Renault power unit after some early teething problems, but Kvyat believes is still too early to make any definitive statements.
"So far it’s not too bad, a bit hard to compare at the moment," he added.
"I think everyone is running a bit different set-ups on the engine so I don’t know exactly what everyone else is [doing].
"It seems okay, [we] have been running, it seems good for now, but [we] soon will focus on performance and that’s when we need to see the step from Renault."