Allison returned to front-line duty last year as part of a job swap with Mike Elliott, who wanted to step away from the technical director position and originally moved into the chief technology officer position before leaving the squad at the end the season.
While at the time it was unclear how long Allison would want to stay in the role, having originally joined Mercedes in 2017, his rekindled enthusiasm for F1 has now resulted in him signing up for the long haul.
Speaking about his new deal, Allison said: “F1 has brought me a lot of good fortune, but none greater than answering Toto’s call to join Mercedes in 2017.
“It is a great privilege to continue this adventure, working alongside brilliant colleagues and fighting together for championship success.”
The news of Allison’s fresh contract comes off the back of Mercedes team principal Toto Wolff revealing earlier this week that he had recently extended his contract with the team at least until the end of 2026.
Wolff has no doubts about the value Mercedes gets from having Allison on board, as he praised both his technical capabilities and his approach to the job.
“I am thrilled that James has committed his long-term future to the team,” said Wolff. “Put simply, he is the most impressive technical leader in our sport.
“His gladiator spirit, along with his knowledge, experience, and determination, make him second-to-none. His influence and impact, however, go so much further than that.
Source: Autosport