The two-time world champion managed just 17th in the Friday shootout to determine the grid for the grand prix on Sunday, while team-mate Lance Stroll pipped only Logan Sargeant for 19th place.
This followed both of the newly upgraded AMR23s (revised floor, engine cover bodywork) having to curtail their running during the sole practice session due to front-left brake fires.
As such, Alonso was left to lament a “painful” day that Aston Martin needed to ‘completely repeat’ and reckoned that the rest of the Austin weekend should be used as a test for 2024.
He said: “We should go back and repeat the day completely starting from the morning.
“We had that terrible session. Lance didn't complete any laps; I only did six or seven quality laps with the new package. Too many unknowns in terms of how to operate the package and the new car.
“So, I think we went a bit blind into qualifying and obviously we see the results, so nothing we can do now.
“We use this weekend as a test for next year as well, even if they are painful. So, let's see what we can learn in the remaining sessions.”
Source: Autosport