The Western company came back to F1 in 2015 as only engine supplier to McLaren, however, a distressed and acrimonious tenure led to the pair parting ways at the end of’17.
“the greatest change to Toro Rosso [in contrast to McLaren] is we’d much better communicating with the team when compared with the past,” Yamamoto told Motorsport.com.
“As a result of the we’d better connection between the chassis and power unit onto the other side.
“In relation to the engine itself we were able to see the progress of reliability and performance. We had Spec 2 and Spec 3 and also improved the performance gradually. It was a fantastic prep for next year.
“We had a few troubles at the beginning of the year, reliability issues, and a few delay on development but in the end both reliability and performance improved”
Yamamoto considers the engine update brought for the Grand Prix revealed Honda might make important steps forward and proved to be enough to get Red Bull’s”confidence”.
When asked if the rapid rebuilding of Honda’s reputation in’18 was a surprise, he said:”This really is not really a big surprise.
“The key thing was that the race performance in Canada. We were able to prove we can step forward to a specific degree and were able to find trust from RedBull.
“After that, we were able to continue in this environment. RedBull was likewise seeing that. I believe the relationship is quite good and stable, and we are getting this confidence. I am excited and looking forward to next year.
“If we can reach or complete our programme next year on program , we can have a fantastic link and outcomes using RedBull.”
Brendon Hartley, Toro Rosso STR13
Photo by: Glenn Dunbar / / LAT Pictures