S&P Global Mobility published their annual vehicle fleet analysis in 2025 and the number that matters most for independent auto repair shops is not the headline. The headline is that the average age of cars and light trucks in the U.S. hit 12.8 years in 2025, a new record. The number underneath it is the one that changes how a shop owner should think about the next three years.
Over 110 million vehicles in the U.S. are currently between 6 and 14 years old. S&P calls this the "aftermarket sweet spot," the age range where vehicles need the most frequent maintenance and repair. That is 38% of the entire fleet sitting in the highest-service-need window. By 2028, they project that number rises to 40%.
The industry puts deferred maintenance across the U.S. vehicle fleet at $36.2 billion in potential sales. That is work that needs to be done, that customers are delaying or have not been reminded about, sitting in vehicles that are mostly owned by people who prefer to maintain what they have rather than buy something new because new cars are averaging over $45,000.
Why this is an independent shop story
Roughly 75% of all repair work in the U.S. occurs at independent shops or franchise networks rather than at manufacturer dealerships. The average customer with a 10-year-old Honda Civic is not taking it to the Honda dealer for a timing chain check. They are taking it to the independent shop they have been going to since the car was new, or they are finding a shop through Google.
The deferred maintenance on that vehicle is not going to a dealership. It is available to the shop that is positioned to find it, communicate it clearly, and make it easy for the customer to approve.
What "positioned to find it" actually means
An independent shop captures deferred maintenance through three connected workflows.
The first is service reminder automation. Tekmetric and Shop-Ware both have trigger-based service reminder systems that send outreach to customers when they are due for services based on time elapsed and estimated mileage since their last visit. Demandforce and AutoPoint are automotive-specific marketing platforms that add oil change reminders, seasonal reminders, and win-back sequences to shops that want more control over the messaging. A customer who has not been in for 14 months is due for something. The reminder is the signal that brings them back. Most shops send these manually when they remember, which means inconsistently and infrequently.
The second is digital vehicle inspection at every visit. A 12-year-old vehicle coming in for an oil change has deferred maintenance items that a complete DVI will surface. The tech doing a thorough multi-point inspection with photos and sending the results to the customer's phone is giving that customer the visibility to make an informed decision about their own vehicle. AutoVitals data shows that inspections with 20 or more photos produce repair orders 30.4% higher in value than inspections with fewer photos. The customer is not being sold to. They are being shown.
The third is declined item follow-up. When a customer declines a recommendation during one visit, most shops note it and move on. A text message 30 days later referencing the specific item, with the original photo attached and a scheduling link, converts a percentage of those declines into future jobs. Neither Tekmetric nor Shop-Ware does this automatically out of the box. It requires a follow-up sequence configured in a platform like Demandforce or AutoPoint, or built through a Zoho Flow or Make workflow connected to the SMS. Almost no independent shop has it set up.
The $36.2 billion in deferred maintenance is not a market forecast that benefits someone else. It is driving past the bay of every independent shop in the country every day. The shops capturing it have their service reminders configured, their DVI workflow running on more than 80% of vehicles, and a declined item follow-up in place. The shops not capturing it have no idea how much of it is leaving without being addressed.
Michelle Onizuka is co-founder and Systems Architect at Onizuka Studio. She builds automation and AI systems for small businesses — including automotive operations across Tampa Bay and beyond.