Only once in his 46 grands prix has Di Resta qualified any worse than the 16th from where he will line up for tomorrow's race in India, and that was in Belgium last year when he started 17th.
Worse still is the unusual disparity between himself and team-mate Nico Hulkenberg as the German has been consistently quicker around the Buddh International Circuit, finishing 0.7 seconds faster than Di Resta in qualifying.
"I can't get any consistency or confidence in the car. I've never felt it as nervous as that," said Di Resta.
"You never see that much of a difference between me and Nico. It's always tenths (of a second), but here I can't get close to him.
"There are indications there is something not quite right with the car. I can feel it in the car itself.
"Yesterday we put it down to issues with a puncture, but it's clear it's more serious than that.
"It resulted in the hardest qualifying session I've had to contend with in Formula One.
"So we need to get on top of things, to understand what the actual issue is to rectify it.
"We're looking at it, with the data showing signs of some things we can pick up on."
Despite the issues, Di Resta is refusing to rule out the possibility of a top-10 finish, adding: "It's going to be damage limitation tomorrow, but I'm not going to give up on it.
"We're reasonably hopeful we can try and do something, and we'll certainly put the pressure on to try and do it."
With the next race in Abu Dhabi just a week away, Di Resta has no doubts the team will resolve the issues
"There won't be a repeat of this in Abu Dhabi, that's for sure," said Di Resta.
"The focus tomorrow is to try and see what we can do, and there are things we need to make sure are right with the car.
"Beyond that I believe there is enough time for us to get to the bottom of things before Abu Dhabi.
"I would think there will be a massive investigation on it."