The new sounds of Formula One have not gone down well with everyone although F1 team bosses insist fans will adjust.
For the first time this season, fans were able to see the new-look Formula One in anger as the drivers took to the Albert Park circuit for Friday's practices.
However, not all the changes were visual.
Noise levels with the 1.6-litre turbocharged V6 engines were nowhere near that they used to be in the V8 days, down by an estimated 30 decibels.
Some fans took to social media to voice their displeasure, however, Williams deputy team boss Claire Williams says they just need time to get used to it.
"Personally I like the sound of the engines, but then I love Formula 1 and I love watching cars go round a race track," she said.
"I think people pretty quickly get used to what Formula 1 engines sound like. We've had so many changes over so many decades of motor racing and you very quickly forget what a previous engine sounds like.
"I think people just want to see a good race on Sunday and as long as we can deliver that I think that any issues or contentious conversations around that may fade away."
Mercedes executive director Toto Wolff also had no issues, saying this is the future of motorsport.
"Well if you like the sound of engines let's go back to V10 and V12, let's not do any hybrid [technology]," said the Austrian.
"This is the modern technology, this is where road cars go. Downsizing is the motto and I think we just need to accept the formula has changed.
"These cars are going to go quicker in a couple of races than the old ones, we're going to get used to the sounds and I promise next year round you will not remember any difference anymore."
Meanwhile, Australia's last F1 World Champion Alan Jones said the cars sounded "terrible."
He told broadcaster Ten: "I don't like it. But I'll put up with it if we see a lot more overtaking this season."
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