Honda is splitting with McLaren after three seasons together, with the Japanese manufacturer making Toro Rosso its works outfit while McLaren will take on Renault power.
In a bid to make its partnership with McLaren work, Honda had been running an aggressive development plan that yielded upgrades at Spa and Monza.
However, it is keen to avoid giving Fernando Alonso and Stoffel Vandoorne multiple grid penalties at upcoming races, even if there are small gains to be had, in favour of one big upgrade.
“But now we won’t be working together with Stoffel and Fernando next year, that means we want to concentrate on this year’s results for McLaren.
“But of course if we can get some huge upgrade, then we don’t need to wait and don’t need to hesitate to take a penalty.” Honda continues to work on its next upgrade, but Hasegawa said it is unclear when and if it will be introduced.