Marcus
Hayes.
32 years inside GM, AutoZone and Firestone. The man who finally puts the automotive industry's biggest secrets in your hands.
University of Michigan '90
The man the industry
didn't want you to find.
Hi, I'm Marcus Hayes — a mechanical engineer from Detroit with 32 years in the automotive industry. I've worked on the factory floors at General Motors, trained thousands of technicians across the country at AutoZone, and managed over 200 Firestone locations nationwide.
I started GarageProf because I was tired of watching regular people get taken advantage of — overpaying at the dealership, getting hit with fake repair bills, or driving on tires that hadn't been checked in two years.
You deserve to know what I know. And now you will.
"I spent 32 years fixing cars for billion-dollar companies.
Now I'm on your side."
From Detroit's factory floors
to your glove box.
I grew up in Detroit, Michigan — the heart of American automotive culture. My father worked the line at a Chrysler plant, and by the time I was 14, I knew the difference between a crankshaft and a camshaft. Cars weren't just transportation in our house. They were survival.
I earned my degree in Mechanical Engineering from the University of Michigan in 1990. That same year, I joined General Motors as a chassis quality engineer. For over a decade, I reviewed failure reports, improved reliability standards, and learned exactly why cars break down — and how to prevent it.
In 2003, I moved into the service industry at Jiffy Lube International. I saw firsthand how customers were left completely in the dark about what their car actually needed versus what shops wanted to sell them.
At AutoZone, I built and ran their national training program. I wrote the manuals. I trained the trainers. I know every part, every code, every trick mechanics use — and every shortcut they take.
By 2019, I was VP of Operations at Firestone Complete Auto Care, overseeing 200+ locations. In 32 years, I helped millions of cars run better. But I had done almost nothing to help the people driving them.
So in 2024, I launched GarageProf. No corporate agenda. No upsells. Just 32 years of real knowledge in plain English — so you can own your car with confidence and never get ripped off again.
"Every dollar you save on car maintenance
is a dollar the industry didn't steal from you."
Certified. Tested. Proven.
Three things every driver deserves.
Ready to stop getting ripped off?
Download Marcus's free survival checklist — the first thing every new car owner needs to read. 32 years of knowledge, distilled into one essential guide. No fluff. No filler.
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