Following its strongest team qualifying performance of the year, with both Hulkenberg and Esteban Gutierrez making it to Q3, hopes are high of another decent points haul in the Korean Grand Prix.
"I think we've been good since Spa," said Hulkenberg.
"I think there is definitely some progress, and some evidence of that. Probably a combination of different tyres, quite big updates, understanding of the car and set-up, etc. I think all that together makes us a Q3 contender."
Hulkenberg said that the rear car imbalance issue that had affected the car since the start of the season had not been eradicated completely yet, but progress was being made.
And he thinks that his chances of doing even better in qualifying were hampered by his Q3 run not being as strong as his earlier efforts.
"We were struggling," he said. "We did one timed lap but, for some reason, Esteban and I both had the same. We were struggling more with the car, and the tyres didn't produce as much grip as Q2.
"I lost four tenths on myself, for no obvious reason. It was also not balance related. It just came from the overall grip of the tyre.
"But these things are very sensitive. It was a bit cloudier - and with one or two degrees it can drop it out of the window.
"Also, in terms of our car and in terms of where it is performing, we know we have a small working range."