The Red Bull driver failed to make it into Q3 at the Red Bull Ring after failing to set a clean lap during the session.
And while being clearly outside the white lines in the first two runs, Perez thinks it's unfair that he was also penalised on his final effort when he felt he had been disturbed by the Williams of Alex Albon.
"There's so many things I can control and unfortunately, with this one, you're closing a good lap and then all of a sudden you are blocked, and you have a penalty," he said.
"I think the system is wrong. It is just frustrating that we don't have a good system and we are not able to consider when these things happen."
Perez was aware that everything hung on the final run but reckoned it was all under control until traffic got in his way.
"I was on a good lap," he said. "But then all of a sudden on my final lap, I found I think Albon, and I just went straight. I could not stop. I think I lost a tenth or a bit more than that just by going straight, but the stewards wouldn't consider that I was blocked."
Source: Autosport