It comes after a whirlwind junior career that saw him win three titles in as many seasons, culminating in the 2021 Formula 2 crown.
A messy divorce with Alpine dominated headlines through the middle of last season, which he spent on the sidelines, before being cleared to join McLaren for the post-season test in Abu Dhabi.
That proved his second outing with his new team after taking part in a private test at Paul Ricard just prior to last year's F1 finale.
“It's difficult to say if it's a McLaren characteristic or a 2022 characteristic,” Piastri said.
“I don't want to put it into the ‘it's a McLaren characteristic' basket.
“I think there are maybe a few small things that are a bit different.”
Last year's McLaren was regarded as having a stronger rear end than front, which in turn meant the car could not be driven into corners as hard as others.
“I understand now why they finished fourth in the teams' championship. It all makes sense to me,” the Frenchman said.
“I think they've got a pretty strong front grip, medium-speed and low-speed corner.”
For Piastri, that prompted a change in style in an effort to get the most out of what is now last year's McLaren, though is likely to share significant traits with the 2023 car.
“I wouldn't say it was 100 percent natural, but I don't think any car is 100 percent natural,” he said of having to adapt the way he drives.
“I think one of the difficulties of the sport is being able to adapt.
“It's certainly different to the F2 car I've raced, the F3 car I've raced, and the '21 car that I drove.
“So you have to change it [driving style] more or less every year, and the cars are constantly getting developed, even throughout the season, you might have to adapt.
“There's a few things that did need a bit of changing, but there was nothing that was completely alien.”
Piastri joins a team alongside a highly-rated Norris, whose four years Formula 1 experience have all been at the wheel of McLaren machinery.
The Brit overshadowed Ricciardo during both their seasons together, even allowing for the Australian's win at the 2021 Italian Grand Prix.
Norris is therefore a useful benchmark, a point not lost on Piastri.
Nor was the importance of the post-season test outing with the team, an opportunity manager Mark Webber described as ‘pivotal'.
“[It] gives them and Oscar some things to think about obviously over the winter in preparation for Bahrain [this] year, because the mileage is pretty short now,” Webber said as part of Speedcafe.com's KTM Summer Grill.
“I'm a fossil now, I'm an old guy, but back in our day we used to do loads of testing but obviously for the youngsters now, it's pretty thin on the ground.
“Oscar had done eight days in the car up until June and then had, like, a four-month gap, so it's not like tennis or golf, it's pretty hard on these youngsters these days.”
Indeed, Piastri's next opportunity in the car will be the pre-season test in Bahrain from February 23-25.
The three days of running will be split with Norris, leaving him just a day-and-a-half of track time – assuming no issues are experienced – to get up to speed ahead of his F1 debut, also in Bahrain, on March 5.