Despite a challenging start to the season, both drivers can see the progress being made with W15, and the difference that could make in a tightly packed F1 grid.
"We understand the car a little more after Suzuka. We definitely made improvements," said Lewis.
George added: "Small things make a big difference to the overall. A tenth or two in Qualifying and we are four places higher up the grid.
"Formula One is extremely competitive. It has been a long time since we have had four teams fighting for that second position.
"We're in a battle of fine margins right now."
A close fight indeed, but one we have been on the wrong side of in the past few races.