French Grand Prix, 16 July, 1300 BST
Button has already written off his chances at Magny-Cours
Jenson Button said Honda's revised car was too slow after his French Grand Prix chances were ruined in qualifying.
Button, 26, got stuck in traffic at Magny-Cours but refused to blame that delay for claiming 18th on the grid.
"The basic problem is the car isn't quick enough," said Button. "You are pushing your hardest but you just can't get the lap time.
"If I had a clear lap I would have got into the top 16 but that's it, I wouldn't have gone further."
Button had expressed high hopes for the heavily revised machine which makes its debut at this weekend's Grand Prix.
But his expectations rapidly dissolved in the French heat at Magny-Cours as the Englishman missed the cut in the opening qualifying session.
I don't want to finish out of the points but it's going to be like a practice session for me
Honda team-mate Rubens Barrichello also struggled and Button sarcastically joked: "He is 14th and he thinks he had a good lap!"
Button, who has not scored points for over two months, has effectively written off Sunday's race but still hopes to leave Magny-Cours on a positive note.
"I don't want to finish out of the points but that is what it is," he added. "It's going to be like a practice session for me.
"It is going to be difficult. We will see what we can do but I am still going to have some fun whatever happens, even if we don't get some points.
"It's not enough for me but I've got to enjoy myself. I don't want to just drive round and finish 19th. I'll give it my all out there."
However, David Coulthard gave British fans something to smile about after claiming ninth on the grid.
The Red Bull driver has scored in each of the last two races and hopes to add to his tally on Sunday.
"We are starting from a pretty good position so if we keep out of trouble we may score some points," he said.