With just 37 laps to his tally as Renault experienced software issues, Jolyon Palmer has billed his first day of testing as "somewhat disjointed."
Just over two months after acquiring the Lotus team, Renault were out on track on Monday for the opening day of testing at the Circuit de Catalunya.
Palmer put the RS16 through its pace but managed just 37 laps due to software issues.
Added to that his best lap time was a 1:29.356, which was slowest of all.
But despit the woes, the rookie was happy to be out on track as he prepares for his first season racing in Formula 1.
"It was great to take to the track for the first time in the car I will race this season," he said.
"We didn't have too exciting a programme to run through today and it was somewhat disjointed, but it was the first day of testing and we've completed valuable aspects of the pre-season build-up today.
"I'm looking forward to getting more running in the car tomorrow."
Pressed as to what exactly the issue was that blighted his running on Monday, he explained: "It wasn't a power unit issue, it was a software issue. Whether that's coming from the power unit, we need to understand.
"The guys have been working all day, trying to get on top of [the problem]. We made progress throughout the day, hopefully overnight we can fix it for good."