Grosjean and teammate Kevin Magnussen both failed to get through Q1, Magnussen starting in 16th, one place ahead of Grosjean.
The result is on par with their previous qualifying performances in 2020, but after a promising Friday the pair were hoping for much more.
Grosjean was an impressive fifth in FP2 with a time of 1.18.1, but after an overnight engine change he struggled to improve on that time.
While Haas’ midfield rivals all found plenty of pace, Grosjean only managed a 1.18.089 in Q1, reporting a lot of understeer.
The Frenchman says his understeer issues and the subsequent lack of pace were “a bit of a mystery”. “
From FP3 I just felt like the car didn’t quite react the same way,” Grosjean explained.
“Obviously an understeery car is slow here in sector three. We’re looking at everything, trying to understand, but it’s a bit of a mystery.
“[Friday] it was better than we ever thought it could be, but the car basically came back to exactly where it was pre-Silverstone.
“It’s just not performing very well and when you can’t trust the front end going into a corner.”
Grosjean believes his fifth place on Friday was genuine and even thought a spot in Q3 was on the cards.
“We didn’t run a dissimilar programme to what we normally do in FP1 and FP2, so the pace was…