Newey will arrive prior to the regulation changes next year, with the designer's impact expected to be seen in Aston Martin's 2026 challenger.
However, Newey has expressed his concerns over the new regulations, which he has stated could be engine-dominated upon their introduction.
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From 2026, F1 power units will use 50 per cent electrical and 50 per cent thermal power distribution, in what has been described as the biggest change since 2014.
Alongside a significant engine overhaul, the chassis regulations will also change, and Newey has delivered a bleak assessment over these new rules in particular.
Speaking to Auto Motor und Sport, Newey has revealed that he has little knowledge of the new regulations due to his period of gardening leave, which could deliver a huge blow to Aston Martin’s championship chances.
"Because I've been out of Formula 1 since the end of April, then I have little knowledge, little detailed knowledge, of the new regulations, of course, the power unit side of the new regulations have been out some time," he said.
"But in terms of the chassis side of it, and the algorithmic vehicle dynamics, then I don't have much knowledge, so that will give a rapid learning curve when I do start."