Force India driver Paul di Resta has said he is satisfied with what he achieved during the 2013 F1 season.

The Scot looks set to lose his seat at the pinnacle of the sport next year, with Vijay Mallya poised to go for an all-new line-up in 2014 in the shape of Nico Hulkenberg and Sergio Perez - according to speculation in the Interlagos paddock.

Speaking after finishing eleventh in the season-ending Brazilian GP on Sunday and slipping to twelfth in the Drivers' Championship, di Resta seemed almost resigned to his fate and either a return to the DTM or a switch to IndyCar in 2014.

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"I think we can go away from Brazil quite satisfied with what we achieved and with the year as a whole. Although I missed out on a top ten position in the [Drivers'] championship, it's been a successful season, an incredible journey and I want to say a massive thanks to the team for the job they've done this year," he remarked.

As for the Interlagos race itself, the Scot felt the start was what cost him the chance to take his tenth points finish of 2013: "Losing six places off the line with too much wheelspin was a key moment and really put us on the backfoot," he confirmed, "but the performance of the car in the race was consistent and we achieved the two-stop race.

"The light rain made it quite tricky, but it was also enjoyable with lots of overtaking," he added. "We chose to extend each stint but I struggled for performance on the hard tyre at the end and I wasn't able to challenge [Daniel] Ricciardo for the final point."

Team-mate Adrian Sutil meanwhile also failed to score, finishing two places further back in 13th. He also finished one place back in the Drivers' Championship, although he scored 19 points less over the year - 29 versus 48.

"It was quite a challenging final race and I was really hoping for some points, but it just wasn't possible today," said the German, who has been linked to Sauber for 2014. "It was drizzling with rain for most of the race, but I felt quite sure the track was going to stay mostly dry. The main issue for me was the tyre wear because we had to stop three times and that made it hard to race for points.

"In the final laps I was catching the train of cars ahead of me, but I didn't get close enough to change my position.

"[Overall] it's been an up and down season, but I will remember the positives and the fact the team is once again in sixth place in the championship, which is a great effort by everybody," he concluded.