IndyCar runner-up Juan Pablo Montoya questions Scott Dixon's series triumph
IndyCar series runner-up Juan Pablo Montoya has questioned whether Scott Dixon was a deserved winner, saying the Kiwi had a "s**t" season.
Montoya was furious the crucial final race at Sonoma on Monday carried double points.
Dixon won, and his Colombian rival finished sixth at Sonoma, so lost the championship on countback after leading all season.
READ MORE: Dixon clinches IndyCar series
Montoya did not take it in good humour, lashing out at the post-race press conference.
"Dixon had a s**t season all year and had one good race, and we paid the penalty."
Montoya wants the double-points system reconsidered, though he holds little hope that it will be changed.
"We'll see if they [IndyCar] change it, but they like the excitement for the last race," he said.
"Is it fair? No, but we go into the last race of the year knowing it's a double‑points race.
"Is it fair for a normal championship? No, it's not fair, but it's the rules they want to play with, and if you don't like the rules, don't race."
Montoya went to Sonoma as the title favourite, but he and team-mate Will Power collided just after a restart, dropping both to the back of the field.
Dixon charged to the front, leaving Montoya frantically weaving through the field in search of the at least fifth place he needed to secure the championship.
"It sucks, but when you make the last race double-points on a road course and you change the tyre and you do everything you did for this weekend and you put so many variables, it doesn't even matter what you do all year."
Dixon, who was one of six drivers still in with a title chance, won the 2003, 2008 and 2013 series.
He has finished runner-up in the series twice and has been third four times in a 13-year IndyCar career.
WHAT DIFFERENCE DID DOUBLE POINTS MAKE?
Actual championship standings
1 Dixon 556
2 Montoya 556
3 Power 493
Standings without double score for Sonoma
1 Montoya 528
2 Dixon 506
3 Rahal 478
Standings with no double scores at all *
1 Montoya 478
2 Dixon 474
3 Rahal 448
* Montoya got double points for winning the Indianapolis 500