Daniel Ricciardo insists he can still tell the Red Bull RB11 has made an improvement on its race-winning predecessor after a day hampered by technical issues with the power unit.

Though Red Bull Racing is enjoying a considerably more positive test than twelve months ago when ongoing problems consigned it to only a handful of laps, Ricciardo was limited to just 48 laps in the afternoon on day three after a power unit issue developed early on.

Coupled to Daniil Kvyat's front-wing error on day two, Red Bull heads into the final day having completed a relatively meagre 102 laps. By contrast Mercedes has managed 399 laps.

Related Articles

Despite this, Ricciardo is encouraged by what he has experienced so far and though he admits he would rather have more mileage under his belt, it remains a positive start.

"I guess everybody wants answers but it honestly is still early," he said. "Every lap we did I thought we learned something and I feel some improvements from last year so for now I'd say an improvement. Comparing to the others I can't compare yet. We didn't do a whole lot of laps compared to the others but every lap we did and turned I felt we learned something, we understood something.

"I'm looking forward to Barcelona, I think we'll have some more new parts on the car from both sides. We'll get some more running and maybe get a better understanding in respect of the others."

After Renault was maligned for the unreliability of its power unit twelve months ago, Ricciardo rubbishes suggestions that the 2015 engine is a concern.

"We came into this test knowing it was a pretty big evolution from last year and we knew it was tight. Obviously we would love to do 150 laps here but we knew it would be compromised one way or another. We'll see, if Daniil can rack up another 50 laps tomorrow. I think that's not a bad first test for us."