Former Formula 1 driver Robert Kubica says he is "very sorry" after he rolled out of Rallye de France-Alsace in the final stage.

Kubica had been on course for his best result to date in the WRC, having moved up to an impressive fourth place overall on the final day, overhauling Dani Sordo in the day's opening test when he set the quickest time.

However, disaster struck in the Power Stage, the repeat-run through the 19.36 km Foret de La Petite Pierre test, when he misjudged the grip levels early on and rolled his M-Sport-run Fiesta RS WRC car into a ditch.

"I made a mistake on the last stage [SS18]. I misjudged the grip on a wet part of the stage," he confirmed.

"On the previous pass I thought I was a bit too cautious there," he explained. "Unfortunately on the second pass there was a lot of dirt on the tarmac and I didn't make it.

"I am very sorry because of the chance I have lost this weekend. Gaining experience in a new sport sometimes gets frustrating."

M-Sport boss Malcolm Wilson added: "Robert was on course to secure his best ever result in the FIA World Rally Championship before rolling on the final stage. Thankfully both he and Maciek [Szczepaniak, his co-driver] where unhurt in the incident."