Kubica switched to rallying full-time last season, two years after suffering severe hand and arm injuries that effectively called time on his F1 career. He went on to win the 2013 WRC-2 title, then graduated to the top-tier championship this year.
But the 29-year-old Pole has endured a torrid start to the season, crashing at least once in all five previous rallies and finishing only one.
Last week he admitted "I will try to change my approach" for the Argentine event by placing greater emphasis on reaching the finish.
"When I made the decision to go rallying, I knew what I was getting into and I cannot allow the past few months to write-off my goals and ambitions,” added the former BMW-Sauber and Renault driver.
And that new approach seemed to pay off in Argentina, with Kubica taking a solid sixth place following a late scrap with team-mate Elfyn Evans. However, he admitted afterwards that he’s still pushing for more.
“It is better to finish in sixth than not finishing at all, but to finish in fourth or second is even better,” said the Pole.
“Of course we need to be realistic for the moment and I think that myself and Maciek [Szczepaniak, his co-driver] have driven a very positive rally this weekend.”
Kubica will be targeting further progress at the championship’s upcoming events in Italy and on home turf at Rally Poland.