Mercedes-Benz USA onboards Adam Chamberlain as CEO

Adam Chamberlain has officially taken charge as the CEO of Mercedes-Benz USA (MBUSA), effective July 2025, following the earlier announcement of his appointment in April.

In his new role, Chamberlain will also oversee marketing and sales for Mercedes-Benz Cars North America, succeeding Dimitris Psillakis, who is transitioning to the position of Senior Strategic Adviser.

“I’m happy to share that I’m starting a new position as CEO at Mercedes-Benz USA,” Chamberlain wrote on LinkedIn, marking his return to the company.

A seasoned automotive executive, Chamberlain brings over 30 years of global leadership experience across the automotive value chain. He previously held several senior roles at Mercedes-Benz, including Vice President of Sales and Product Management at MBUSA (2016–2021), and VP of Sales for Passenger Cars in both the U.S. and U.K. markets.

Before rejoining MBUSA, he served as Executive Vice President and Chief Operating Officer at Lithia & Driveway, one of North America’s largest dealership groups, where he led operational performance across 300+ dealerships with revenues exceeding $30 billion. He also held the role of President of Aston Martin The Americas.

Chamberlain is widely recognized for his collaborative leadership style and track record of driving performance. As CEO, he will now lead MBUSA’s 1,600+ employees and work closely with over 380 dealer partners across the U.S., as well as 200 employees and 59 dealers in Canada.

Chamberlain has taken over from Dimitris Psillakis, who transitioned into the role of Senior Strategic Adviser.

Over his 33-year career at Mercedes-Benz, Dimitris Psillakis has held leadership roles across key international markets, including Europe, South America, and Asia. Most recently, he has been a driving force behind Mercedes-Benz's success in the U.S. and Canada. 

Since taking on the role of Head of Sales for North America in late 2020, Psillakis has worked closely with dealer partners to successfully navigate a challenging market environment shaped by supply chain instability and an accelerating pace of industry and technological change. 

He played a pivotal role in charting a clear and transformational path forward for the company—leading efforts to modernize the customer experience through digitalisation and advancing the company's electrification strategy with the introduction of new all-electric and plug-in hybrid vehicles to the North American portfolio. 

In his upcoming role as Senior Strategic Adviser, Psillakis will continue to support key strategic initiatives until the end of this year and work closely with the leadership team to ensure a seamless transition.