Robert Kubica has said 'one small misjudgement' was to blame for his stage stopping crash on day two of Wales Rally GB.

Kubica, who is getting his first run in a current generation WRC car on the final round in the 2013 World Rally Championship, had been running seventh overall, when he rolled his Citroen DS3 WRC towards the end of Hafren 1 this morning, the first test of the day.

"I misjudged the grip on the braking," the former F1 racer told the official WRC site, wrc.com. "I think I made a mistake not noticing the mud on the surface, and when I braked I just locked the front wheels.

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"I tried to recover it with the handbrake but we ran out of road. It was quite steep and we ended upside down."

"It's a shame because I was not really pushing, the surface change just caught me out," he continued. "On the corner before there had been good grip but here, apparently, there was more mud under braking."

Kubica is now hopeful he will be able to re-start on Saturday under the Rally 2 regulations and continue to gain experience, although Citroen have yet to confirm if that will be possible.

"There is no big damage I think, even though the car is three metres down. It was a soft half-roll and didn't feel like a big crash," he added. "Hopefully I can return. It's a shame because one small misjudgement and we ended up like this."