Hakkinen won his two World titles with
McLaren in 1998 and 1999 when they were powered by Mercedes up until the end of 2014.
They have since used Honda and
Renault engines the past few seasons but have failed to replicate the success they once had before, opting to return to being supplied by the Silver Arrows.
"It is very satisfying to see McLaren return to a position of relative competitiveness, and this week's news that they use Mercedes engines from 2021 onwards is very significant," Hakkinen wrote in his
Unibet column
.