Lewis Hamilton : If we want to move up the grid, then we will need to add more performance to the car
It was a difficult day today. I did my best, but the result wasn’t a good one. Unfortunately, that is where our car is at the moment. I didn’t feel great on the Hard tyre and picked up a little bit of damage on the restart. I had lots of understeer, particularly during that first stint, which was why I decided to let George past. Once we put on the Medium compound, it started to feel a little better. The final stint was the first time in the race that I felt like I had good grip.
We need to keep working hard as today, our pace was likely only good enough for P6. If we want to move up the grid, then we will need to add more performance to the car.
Source and more info : Mercedes-AMG Petronas F1 Team