McLaren once again had very little to cheer about at the Belgian Grand Prix with Honda admitting they didn't meet the "expectations" of the drivers, team and fans.
The Japanese manufacturer used a new-spec engine and some in-season development tokens ahead of this weekend's race, but it certainly didn't yield the expected results as Fernando Alonso finished P13 with Jenson Button once place behind.
To add insult to injury, the drivers were hit with a combined 105-place grid penalty following double power unit changes on both cars.
Honda motorsport chief Yasuhisa Arai admits it is back to the drawing board for everyone.
"I must thank Fernando and Jenson for their professionalism throughout the weekend," he said. "It’s most disappointing to us that we couldn’t meet their expectations, or those of the team and the fans, who had been waiting for the updates to produce results.
"We came to Spa knowing the difficulties of managing the ins and outs of the energy. We will look over the data from the weekend – including our gap to the other teams – and prepare for Monza."
Meanwhile, the only positives that Alonso got from the Belgian GP were a good start, both cars finishing and garnering information.
"We were not competitive. We did a good start from P20 to P13 – that was the only joy probably, the first lap and the start," the Spaniard said. "After that we dropped to our natural position and kept running there.
"It was unfortunately not a very interesting race in terms of fighting other cars. But we did finish both cars and hopefully we got some information. But yeah – painful weekend."