The Australian is enduring a tough Formula One season in which he currently sits 10th in the drivers' standings -- he's mustered just 16 points, the same as teammate Nico Hulkenberg.

But Ricciardo insists that a year on from his big-money move from Red Bull, he has no regrets about switiching to Renault.

"I lot has happened. I feel good," Ricciardo told CNN Sport's Amanda Davies. "Obviously, the results aren't what I want but I also didn't expect the world come 2019. I knew there was going to be a bit of a struggle and a rebuilding phase so we're certainly going through that and I want it to happen overnight, but I know it's not going to.

"I'm not down or discouraged. I was prepared for this."

Since making his debut in Formula One in 2011, Ricciardo has had mixed success.

He's won seven grand prixs and finished third in the drivers' championship in 2014 and 2016.

Ricciardo, who turned 30 on July 1, admits he hasn't achieved everything he had wanted to in F1 before entering his fourth decade.

"I wanted a world title and believed I could have had one by 30," reflected Ricciardo said. "But is there some satisfaction in my heart? Absolutely. I have achieved some race wins, I've done everything else other than win a world title. If it ended today, half my heart would feel a little bit torn but half of it would be grateful and fulfilled."

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