Expert Transmission: Decatur’s Trusted Automotive Specialists Since 1995 – 7/24/2025
Local shop continues to deliver honest service, expert diagnostics, and community care across Northeast Indiana
DECATUR, IN — In a town where dependable vehicles are essential for work, family, and everyday life, Expert Transmission has earned its reputation as a pillar of quality automotive care. Founded in 1995, this family-owned shop blends small-town integrity with advanced technical skill to serve drivers across Adams County and beyond.
Now celebrating over 30 years of service, Expert Transmission remains committed to its core values: honesty, precision, and customer-first solutions. From transmission rebuilds to complete drive train diagnostics, their team of seasoned professionals helps keep Decatur moving—with results people can trust.
Technicians Who Treat Every Job Like It’s Personal
Expert Transmission isn’t just a repair shop—it’s a team of specialists who treat each vehicle like it belongs to someone they know. Leading the garage is Brian Keller, master technician and Decatur native, who’s been diagnosing transmissions for over 25 years.
“Every job we take on matters,” says Brian. “We’ve had people walk in after being misled somewhere else. What we offer is clarity. No up-sell, no fluff—just good work done right the first time.”
Brian joined Expert Transmission in 1997 and quickly became known for his patient approach to explaining complex repairs. He’s trained younger techs in everything from hydraulic theory to hybrid transmissions and often takes extra time to show customers exactly what’s happening beneath the surface of their vehicle.
“Transmissions are intimidating. Most shops won’t let you ask questions. We encourage them,” Brian adds. “Because people deserve transparency when their safety’s at stake.”
Customer Service That Builds Loyalty, One Driver at a Time
Up front, Stephanie Rhodes, Expert Transmission’s customer service lead, brings warmth and efficiency to every interaction. Stephanie has been the smiling face behind the counter since 2011, handling everything from check-ins and scheduling to quotes and warranty support.
“We never rush people,” Stephanie shares. “If they’re nervous, we talk through everything. If they’ve had a bad experience elsewhere, we listen. That trust—that human connection—is what makes our shop different.”
Stephanie also manages the shop’s growing referral network and coordinates partnerships with local businesses and dealerships for fleet maintenance. Thanks to her leadership, Expert Transmission maintains a strong presence across social review platforms—with hundreds of glowing testimonials praising the shop’s communication and consistent follow-through.
“We don’t just fix cars. We make it easier for people to move forward in life,” she adds.
Repairs Rooted in Expertise—and Powered by Innovation
While the shop honours its traditional service roots, its technical capabilities are anything but old-fashioned. Expert Transmission uses state-of-the-art diagnostic software to read and interpret transmission codes on domestic and imported vehicles alike. Whether it’s a CVT from a late-model sedan or a manual gearbox on a classic pickup, the team tailors solutions that match the vehicle’s long-term health and the customer’s budget.
“We’re rebuilding transmissions in-house using parts tested for Indiana’s climate and driving conditions,” notes Tom Bryant, parts manager and transmission specialist. “We know what works here—and what doesn’t. That local knowledge really matters.”
Tom helps source OEM-grade components and has spearheaded efforts to offer expanded warranties, ensuring customers leave with dependable repairs that hold up for the long haul. Under his guidance, the shop has reduced repair turnaround time by 20%, helping customers get back on the road faster without sacrificing quality.
A Local Legacy Built on Trust and Care
Founded by Mark and Denise Collins in 1995, Expert Transmission began as a small two-bay garage on the east side of Decatur. Mark—a lifelong mechanic and proud Navy veteran—opened the shop with the vision of creating a place where customers would be treated like neighbours, not invoices.
“It’s always been about people,” Mark says. “You fix a car, sure. But if you treat folks right, they come back. And they tell others.”
In the early days, Mark personally handled most of the repairs while Denise ran bookkeeping and customer service. Today, while semi-retired, they both remain involved—Mark still pops in weekly to check on service quality, and Denise continues supporting community partnerships.
The shop now operates out of a larger, fully equipped facility with multiple service bays, expanded parking, and a comfortable customer lounge. Yet the ethos has stayed the same: respectful service, honest estimates, and repairs that last.
Community Involvement That Goes Beyond the Garage
Expert Transmission doesn’t just serve Decatur—it invests in it. The business sponsors youth softball and baseball teams in Adams County, contributes annually to vehicle safety checks for local first responders, and offers discounted inspections to seniors and veterans throughout the year.
Each fall, they host “Shift into Winter”—a free event that offers transmission fluid checks, battery tests, and maintenance tips to prepare drivers for colder conditions. In the spring, they partner with the Adams County Career Center to provide mentorship opportunities for students pursuing automotive trades.
“We’ve had kids come in unsure of their future,” Brian shares. “And a few years later, they’re working right here beside us. That’s the kind of impact that lasts.”
The shop also regularly participates in Decatur’s community festivals, supporting local vendors and offering giveaways that promote vehicle safety and awareness.
Looking Ahead to the Next 30 Years
In 2025, Expert Transmission is poised for continued growth while staying true to its mission. Plans include expanding service capabilities to include hybrid and EV-specific transmission diagnostics, enhancing their online booking system, and developing educational content to empower vehicle owners with preventative care knowledge.
They’re also exploring new partnerships with regional towing services to provide seamless roadside support—especially for rural customers who face longer wait times and fewer service options.
“We want to be the kind of shop people don’t have to second-guess,” says Stephanie. “Because when you’re dealing with transmission trouble, peace of mind means everything.”
With a loyal customer base, a respected name in automotive circles, and a culture grounded in honesty, Expert Transmission shows no signs of slowing down. Decatur drivers know that when their cars stall, this team steps up—with care, skill, and a legacy built to last.
Contact Information:
Expert Transmission is located in Decatur and Bluffton, Indiana. Services are available Monday through Saturday, with appointments encouraged. For more information or to schedule a consultation, visit https://experttrans.com/ or call (260) 824-4929 or (260) 724-2434.