Sergio Perez believes there will be more driver errors during the Monaco Grand Prix this weekend as a result of the new regulations.

The 1.6-litre V6 turbo power units deliver increased torque compared to previous seasons, and added to lower levels of downforce the cars are moving around a lot more. Perez believes that combination around the streets of Monaco will allow drivers to make more of a difference but will also lead to more mistakes.

"It will be very interesting to see how we go around here," Perez said. "I think you're going to see more driver mistakes, more driver errors and I expect the driver can make a little bit more of a difference than normally in Monaco.

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"It can go either that way or it will be just that you see Mercedes, Red Bull, those teams at the front and everyone more evenly matched. But I think the driver can do a bit more of a difference here and it will be a very interesting Monaco; more than any other year."

Reflecting on 2013 - when Perez was involved in contact with other drivers while making overtaking moves during the race - he admitted he was "dreaming" in trying to make up so much ground in the race and may take a different approach this year.

"It always depends which position you are in. Last year I was at McLaren dreaming of impossible positions. I was going in to a period of frustration and I was just trying to get as many positions as I possibly could.

"I saw the opportunities, so I was always trying to get the most positions, but every year and every move here is different. You know that every overtake here is risky, so it just depends on the amount of risk that I want to take on Sunday or not."