Speaking to Sky Sports, Hamilton spoke about the need for improvement from his team across the next 22 races.
“The car is good, relatively good in the lower speed and not so bad in the medium, but in the high speed we are miles off,” he said.
“The guys were, it was like I was in a different category when I was going through the high speed between the other people, the other guys around me.
“It’s frustrating for sure to be three years in a row, almost in the same position. It’s definitely tough, but you know we’ll get our heads down and keep working away and I know everyone back at the factory is pushing as hard as they can.
“But we’ve definitely got to make some big changes. We haven’t made big enough changes perhaps.”