Carlos Sainz has labelled his Abu Dhabi Grand Prix weekend a "disaster" so far after qualifying on the final row of the grid on Saturday.
The Toro Rosso driver and teammate Daniil Kvyat have been unable to run properly following the problems that the Russian had with the wheel rims during Friday practice.
The team made changes to the suspension of its cars for Saturday, but both drivers spent most of final practice in the garage.
Sainz struggled for pace in qualifying and finished down in 21st position, only ahead of the Sauber of Marcus Ericsson.
The Spaniard said the weekend had been the worst of 2016 so far.
"We have been having problems all weekend and we couldn't do as many laps as we wanted to prepare for qualifying and in the end we arrived in qualifying without being prepared, and as it usually happens when you lost track time, you do poorly," said Sainz.
"It has been a disaster of a weekend until now. I hope tomorrow things are better, but so far it has been the worst weekend of the season."
The Spanish driver said he is not expecting things to improve much in the race, and admitted it was not the end of the season he would have liked.
"We don't have a lot of pace, so we'll try to have fun, do our own race and if all we can aim for is to finish 16th, then we'll try to finish 16th, but that's not how I wanted to finish the season."
Teammate Kvyat was also knocked out in Q1 and will start from 18th.