Carlos Sainz Jr took 'revenge' on his dad during 2018 Dakar victory

Sainz Sr has been a regular fixture at his son's side during his rise from karting to F1, and he still attends grands prix with the Renault driver.

However, speaking after taking his second Dakar victory this weekend, Sainz said their roles had been reversed during the two-week rally.

"I talked to him every day before and after each stage and I think he has taken revenge on all the advice I have given him during all this time, because he has done the same during these last two weeks," said Sainz Sr.

"[We talked about] the tactics of each day, he asked and commented that it was worse or better in each moment."

Moments after his father won the event, Sainz Jr tweeted his congratulations, saying: "Today I am probably the proudest son of his father in the whole world.

"Winner of the toughest Dakar ever done in South America at 55 years of age (good number) and he did it in his own way. Congrats #matador!"

Sainz Sr, who said the difficulty of this year's event compared to the two editions of the rally he contested in Africa, added that it was challenging to maintain the big advantage he had once team-mate Stephane Peterhansel fell out of victory contention, due to the nature of the stages and the mental difficulties of trying to protect a lead in such a gruelling event.

"We have seen in this race that every day things happened and it was very hard," he added.

"Every day there will be a surprise, with traps. You have to be lucky. I have never run a race like this.

"It is difficult to win a race that lasts two weeks. When you win with this advantage [44 minutes], you have done the job well.

"From the [Dakars] I have done this has been the hardest, including the two in Africa that I did.

"My life has been the WRC and where I feel really comfortable and I enjoy it is in a [traditional rally] stage.

"We have seen it all in this rally, with a lot of [the route] outside [normal stages], which is the part where I feel less comfortable.

"It's not easy when you have so much advantage to keep the rhythm.

"Sometimes when you go more slowly you can make mistakes and it's harder to stay focused because you're not used to being so careful."

With Peugeot ending its Dakar programme Sainz's future in the event is in doubt, but after his victory he said: "There'll be time to think about it. Peugeot retires and we'll see what we do."