Force India's Nico Hulkenberg says he cannot understand why the stewards slapped him with a penalty following the collision with Felipe Massa in the Singapore Grand Prix, especially as they didn't give the drivers a chance to discuss it.

Hulkenberg and Massa collided on lap 14, as the Brazilian exited the pits in his Williams. Massa was able to continue - until later retiring with gearbox problems - while Hulkenberg was pitched up into the air and went into the barriers, triggering the first safety car period.

The stewards subsequently looked into it and ruled that Hulkenberg was at fault, handing the German a three-place grid penalty for the next event in Japan. The ruling was made without speaking to either Hulkenberg or Massa.

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Quizzed on the punishment, Hulkenberg said: "I am quite frustrated because the race looked promising and to finish the race that early with that incident is very disappointing and annoying.

"Obviously I was on the racing line and ahead going into Turn 3 and he [Massa] has come out of the pits and touched me on the back.

"A bit strange also why the penalty was given right away and why they weren't even listening to what the different views were."

Meanwhile, Hulkenberg confirmed he was aware Massa was there as they both went into Turn 3.

"I saw him coming out the pit lane, but I knew I was in front and then I got hit on the back."

"I was on the racing line and I took the corner as usual," he added.

"In my view it was my corner and I'm surprised Felipe backed out of it much too late, locking up just before he hit me."