Former Formula 1 driver Robert Kubica says his future in the WRC remains uncertain, with the likelihood of him returning next season 50-50.

Kubica, who took the WRC2 crown last season in his first year in the World Rally Championship, stepped up to the top level this year, but he only managed to score points on three occasions in his M-Sport-run Fiesta RS WRC, coming home sixth in Argentina, eighth in Sardinia and ninth more recently in Australia.

Asked about his plans for 2015 following Wales Rally GB last weekend, the WRC season finale, he replied: "That is a difficult question. It is 50-50 between staying in the WRC and going back to circuits."

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His comments echoed what he said last month prior to the event in Spain: "One thing I hope is to be behind the wheel of a competitive car. What will happen? I don't know," he said then.

"I will look in the next weeks or month, the time is running. For sure, there is more to learn, but the experience will be more [next year] and the hard lessons learned this year I hope will not happen again, but I do not know if I will be here."

"To be honest, I have thought about doing some rallies, not all the season and maybe do some circuit, I don't know," he added.

"I would like to do the highest level I am able to do, but because of my limitation [from the accident I suffered in February 2011] the circuit would be easier because the steering input is smaller and more consistent. On the gravel, you are playing a lot with the steering wheel - that is not so easy for me. We will see, everything is open, but it is important for me to do what I can enjoy."

Kubica concluded the 2014 WRC season with an 11th place finish in Wales on Sunday and he said he was happy with that, especially given conditions on the event are so challenging.

"It has been a difficult weekend with very difficult conditions, but I think we drove well with no mistakes and no big moments," he reflected.

"I was determined to finish this rally because it is so unique and you don't get many chances to gain experience from these kinds of conditions, so I am glad that we managed to do that.

"I've been really starting to enjoy rallying on gravel. Okay we had some difficult moments towards the beginning of the season, but I think that we have improved a lot throughout the year and I want to thank all of the mechanics who worked on my car. All we need is to be a bit more consistent, and that will come with experience."

Meanwhile, M-Sport boss Malcolm Wilson described Kubica's performance as 'solid'.

"We have seen a really solid drive from Robert in what were some very challenging conditions this weekend," Wilson confirmed. "He adopted a sensible approach and because of that he will be much better placed to progress should we see him here again next year.

"This is one of those events where experience can count for a lot and I think he can be very pleased with the job he has done. He has progressed a lot - especially on gravel - and I think you can see that from the last couple of events."