Mercedes engine boss Andy Cowell is to step aside from his position at the end of this month.

As the managing director of Mercedes' High Performance Powertrains arm since 2013, Cowell oversaw the development of the V6 hybrid power unit that has powered the Brackley-based team to six consecutive double championships since its introduction in 2014.

Back in January, however, he informed the company of his decision to leave after 16 years, with Mercedes taking advantage of his departure to conduct a leadership shakeup.

Hywel Thomas will assume the role of managing director and take control of the Formula 1 engine project, Adam Allsopp will focus on the Project One road car, while Pierre Godof will remain head of the Formula E operation.

Cowell is to remain part of Mercedes in an advisory role to Thomas on what the team calls a "major future project" until 2021.

“Andy’s leadership of the team at HPP has been a key factor in our championship success in recent seasons," team boss Toto Wolff commented.

"He has made an outstanding contribution to our motorsport legacy and I have valued and enjoyed our working relationship since 2013; I am sure he will enjoy great success in the next challenge he decides to take on.

"Our philosophy has always been that a winning team is a dynamic organisation, and that change is a natural part of every company’s development," the Austrian noted.

"I am particularly pleased that we have been able to work together to create a new leadership structure, by building on the strength in depth of the team in Brixworth.

"It puts us in a very strong position for the years ahead, as we aim to set new benchmarks in Formula One and Formula E.”

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As for Cowell, he explained the time was right to move from Mercedes.

“After 16 enjoyable years working for HPP, I have decided that now is the right time to move on from my role and seek a new engineering business challenge," he said.

"I have appreciated the opportunity to work with Markus and Toto in defining the future leadership structure of the company and I have every confidence in the ability of Hywel and the team to lead the company forward.

"It has been an absolute honour to work for Mercedes and especially to be Managing Director of HPP for seven years.

"Thank you to everyone who has provided me with such amazing opportunities and enjoyable challenges, especially Ola Källenius who had the courage to support me back in 2006.”