The Frenchman is in optimistic mood heading into the third and last race held in September after finishing fourth in the previous round in Misano last Sunday to trail leader Andrea Dovizioso of Italy by just one point.
Ducati rider Dovizioso is on top with 84 points. Yamaha rider Maverick Vinales of Spain is tied with Quartararo on 83 points after winning the race in Misano last Sunday.
The Barcelona circuit has been Quartararo’s favourite as it is the venue where he scored his first world championship win in Moto2.
Last year at the same Spanish track, Quartararo converted his pole position to a second place finish. A third win of the season is not beyond his reach if he gets his act right on Sunday.
“It’s great to have another race weekend, the Barcelona track is one I love.
“I feel that we can get a really good result there,” said the 21-year-old.
“It has a one kilometre long straight, so we will have to work on a good set-up for it.
“Last year, our top speed was not so good there but we were still able to finish on the podium, so it means we are strong in the other parts of the track,” he said.
He was the winner of the first two rounds in Jerez when the MotoGP season resumed after a four-month delay in July.
Teammate Franco Morbidelli, who continues to recover from a stomach bug, will be aiming to go into the eighth round fighting fit.
“I have stayed at home trying to relax and recover to make sure I’m 100 per cent ready,” said Morbidelli, who is fifth in the championships standings.