"The day's done, first few kilometres with the auto", Verstappen said in a video on the Red Bull Racing Twitter account.
Max Verstappen says Red Bull has high expectations of Honda this season but is realistic enough to know success will take time. The livery will only be used for launch day, meaning that fans will have to wait to see what the actual livery for 2019 will look like.
The Silver Arrows and Red Bull will share use of Silverstone on Wednesday for shakedown runs of their 2019 cars.
"After my first run I was smiling, very happy with how the auto was behaving - plus the engine as well, very positive".
Red Bull Racing has debuted its new Formula One entry, which for the first time will feature horsepower from engine supplier Honda.
Verstappen, who shared the victories with Australian Daniel Ricciardo last season, has a new teammate for 2019 in Frenchman Pierre Gasly.
The team is hopeful a switch to Honda will yield more consistent results.
"I am very excited to get started as the off-season has been quite long", said Verstappen. "The first two or three weeks feel like they are good to have and then after a break you want to get going".
"The RB15 has been unleashed", a statement said.
"We are expecting a lot from Honda and are positive, but it will not be flawless from race one".
"We are expecting a lot from Honda and are positive, but it will not be flawless from race one". For sure there will be moments where, as a team, we make mistakes or it's not going as we want it to, but I think what is very important is that the team and Honda, we are pushing really hard to improve the development.
"Of course today is all about filming, but it's also a really valuable opportunity to check that all the systems work and that the vehicle is fundamentally in good shape before we head to Barcelona next week where hopefully it will be a bit warmer!" said team boss Christian Horner.