David Agretelis: HSR Classic Endurance Championship Presented by Mission Foods 2025 Champion
In the paddock, amidst the smell of high-octane fuel and the clatter of air guns, you can usually gauge a driver’s season by their body language. For David Agretelis, the tell was unmistakable. The only thing more reliable than his performance behind the wheel of the No. 166 Porsche 911 S/T throughout the 2025 Historic Sportscar Racing (HSR) season was the grin that refused to leave his face.
Agretelis didn’t just participate this year; he arrived. Piloting his 1972 Porsche prepared by the 901 Shop, he put together a campaign that most vintage racers spend a lifetime chasing. It was a season defined by precision, mechanical sympathy, and an undeniable joy for the sport, culminating in the HSR Classic Endurance Championship Vintage GT title.
Agretelis Finds More Than Speed with 901 Shop
Racing is often painted as a solitary pursuit, but anyone who has spent time on the pit wall knows it is the ultimate team sport. Agretelis is the first to admit that his championship run wasn’t a solo act. Since joining the 901 Shop in 2022, the dynamic has shifted from a driver hiring a service to a competitor finding a home.
“I joined the 901 Shop in 2022 and focused everything I had on the top step,” Agretelis explained, reflecting on the journey. “At 901, I not only found a winning team, but I found family for life. Everything came together in 2025 with an extraordinary run, thanks to my Crew Chief, Jeffrey Li, and everybody at the 901 Shop.”
That bond was evident in the results. When the car is right, and the communication with the crew chief flows, a driver can stop worrying about the machinery and start focusing on the asphalt. For Agretelis, that confidence translated into aggressive, calculated driving that left the competition fighting for second place.
A Season for the Record Books
The statistics for Agretelis in 2025 read like a fantasy season. It started where so many dreams go to die on the bumps of Sebring International Raceway. The HSR Classic Sebring 12 Hour presented by Mission Foods is a grueling test of man and machine, yet Agretelis broke through to secure his first HSR Classic victory last March.
That win sparked a momentum that carried the No. 166 Porsche straight through the calendar. He backed up the Sebring performance with another Vintage GT win at the HSR Classic Watkins Glen Six Hour. The only hiccup in a near-perfect run came at Road Atlanta in September.
With his regular crew chief absent, the rhythm was slightly off. Yet, even on a “bad” weekend, Agretelis managed to muscle the car to a podium finish. It was a testament to his maturity as a driver, salvaging points when the win wasn’t there.
He capped it all off at the World Center of Racing. The HSR Classic Daytona 24 Hour is the crown jewel, and Agretelis didn’t flinch. He parked the 911 in victory lane, securing the series-ending win and putting an exclamation point on the HSR Classic Endurance Championship presented by Mission Foods.
“When I learned of the Mission Endurance Championship, I was psyched,” Agretelis said. “I knew we had a chance, and when we won the overall at Sebring, and then again at Watkins Glen, our dream started to take shape. Daytona was ours to lose, and we brought it home.”
Agretelis Named Driver of the Year
The trophies were nice, but the paddock saved the best for last. Following the season finale, Agretelis was honored as the Driver of the Year. In a series populated by legends and lifelong dedicated racers, this award speaks to character as much as speed. It is arguably the most prestigious honor in the HSR, recognizing the competitor’s spirit.
“The Classic Endurance championship was the culmination of 20 years of commitment and dedication to not just racing but winning,” Agretelis noted, clearly moved by the accolade. “Driver of the Year came as a total surprise, and I am humbled and proud to join my teammates and all HSR predecessors in this prestigious recognition.
Together, the Endurance Championship and Driver of the Year represent the achievement of my racing lifetime.”For Agretelis, 2025 wasn’t just about the hardware on the shelf. It was about the camaraderie of Groups 3 and 5, the friendships forged in the heat of competition, and the realization of a 20-year journey.
What’s Next After a Championship Run?
The engine has barely cooled on the 2025 season, but eyes are already turning toward 2026. The HSR season is set to kick off right back where Agretelis started his championship charge: Sebring International Raceway. The action resumes February 12-15 with the HSR Sebring Pistons and Props presented by Alan Jay Automotive Network.
It’s a date swap for the popular event, but for Agretelis, the venue remains the same hallowed ground where his dream season began. If 2025 proved anything, it’s that David Agretelis has found his rhythm, his team, and his speed. The rest of the vintage GT field better be ready.
