With the quickest car so far in 2018, the German driver has arrived in Barcelona hoping to regain his championship lead.
"We have some new things with us, some a bit more hidden but others clearly visible," said Vettel, undoubtedly referring to the Halo-mounted wings and mirrors.
"It does not affect the performance of the car," he added of the Halo mirrors.
"I think it looks good, even if the Halo is not so pretty, but the position of the mirrors looks good. More importantly it provides a better view.
"It really doesn't matter what the car looks like. If it's fast, it's nice."
Vettel trails leader Lewis Hamilton by four points going into the race.