“Hopefully I’ll be around maybe for the enduros next year or maybe a wildcard – I think that’s definitely something that is possible.”
The former IndyCar podium-getter admitted she felt “a little bit of pressure” as top results have continued to prove elusive in a struggling Altima.
De Silvestro sits 20th in the championship, having been 23rd last year and 24th in her rookie season.
“I’m not disappointed, definitely I feel the three years have been great,” she said.
“It has been really an awesome experience for me to race here and even though I feel like some boxes haven’t been ticked, that’s sometimes how racing is.
“You need to be in the right place and the right position, which I felt was maybe not so much the case this year especially.
“A bit frustrating but at the end of the day, everything happens for a reason and now I have this great opportunity with Porsche that has come around.
“For me it’s something that I need to take because that’s a really big chance for me and my career.
“Two events left here; I’m pretty pumped about those, especially Newcastle.
“It’s a place that I do really well at so hopefully we can really finish the year on a high and get some good results in the last two rounds.”
De Silvestro identified a number of highlights from her time in the category and was particularly grateful for the long-term support of Harvey Norman CEO Katie Page.
“First of all, I think how welcome I have felt coming here,” said De Silvestro.
“As a European, it’s definitely a big step in learning the cars and all that but the fans have been awesome.
“Everyone has embraced me with open arms, and just being part of Supercars, I think it is really special.
“Not many drivers have been able to say that they’ve been able to race here and do Bathurst and all that, so I feel pretty privileged in that sense.
“All this would never have happened if Harvey Norman didn’t open up this opportunity five years ago as a wildcard.
“So I’ve been really lucky to have their support in giving me this chance here and thanks to them as well, this opportunity with Porsche came around, because I’ve had the support from Katie in showing what I can do.
“Having her behind me, letting me race here, making that possible has been awesome.”
De Silvestro’s penultimate round as a full-timer is this weekend at the Penrite Oil Sandown 500, where she will again team up with teen co-driver Alex Rullo.
The Newcastle finale will then take place across November 22-24, before De Silvestro heads abroad.