Latest / The Side Hustle Career Podcast with Fexingo: Second Income, Freelancing While Employed / How an Auto Mechanic Built a 12K Monthly Side Hustle in Fleet Maintenance Auditing
Transcript
- Lucas: So we get a lot of listeners who write in and say, 'I've got a trade skill, but I don't see how I can turn it into a side hustle — I'm not a designer or a coder.' And I think today's case is the perfect counterargument. Luna: I remember your teaser — a mechanic making twelve grand a month auditing fleets. That one stopped me. Lucas: Right. His name is Marcus, he's a certified mechanic at a garage in Boise, Idaho. Been turning wrenches for about eleven years. Around 2022, he starts noticing something: the local delivery vans and contractor trucks that come into his shop — they're not following manufacturer maintenance schedules. Luna: Like, they're skipping oil changes or ignoring transmission fluid intervals? Lucas: Exactly. Marcus sees a van with 60,000 miles that's never had its differential fluid changed. He tells the owner, and the owner has no idea that's even a thing. That's the lightbulb moment. Marcus realizes there's a gap between what fleet owners know and what they should be doing to keep vehicles reliable and warranty-valid. Luna: So he starts offering to do a full audit of their maintenance records for a flat fee? Lucas: Initially, he just offered it verbally to a few regular customers — 'For $300, I'll go through your last two years of service records and compare them to the manufacturer specs, and give you a report.' His first client was a small plumbing company with five vans. Marcus found they'd missed three recommended services across the fleet, which voided a warranty claim on a transmission. That saved the plumber about $4,000. Luna: Word of mouth must have spread fast — saving someone four grand is a pretty compelling story. Lucas: It did. Within six months Marcus had seven clients, all paying him $300 for a one-time audit. But he quickly realizes the real money is in recurring audits. A one-off is fine, but the value is in catching issues before they happen — and that requires ongoing review. Luna: So he pivots to a subscription model. Lucas: He creates a quarterly audit package. For $1,500 per quarter per fleet, he reviews all maintenance records from the previous three months, checks for compliance, flags upcoming service needs, and provides a one-page summary. He also includes a 24-hour turnaround on any emergency repair questions — like, 'Should I replace this alternator now or can it wait?' That's huge for a fleet manager who doesn't have a mechanic on staff. Luna: So the revenue math: at fourteen clients, that's $21,000 per quarter. But he's still working his full-time job at the garage? Lucas: He is. Marcus works a standard forty-hour week at the shop, then does the audits in the evenings and weekends. Each client takes him about two to three hours per quarter — reviewing records, writing the report, and a brief call. So he's spending maybe forty hours a month on the side hustle. That works out to about $300 an hour effective. Luna: Which is way more than his hourly rate as a mechanic. But the real constraint isn't his time — it's liability, right? If he gives bad advice and a fleet has an accident. Lucas: That's the biggest risk. Marcus carries a $2 million professional liability policy. It costs him about $2,400 a year. He also makes clients sign an agreement that his audits are advisory — the final repair decisions rest with them. Even so, one bad recommendation could wipe him out. He's very careful to only work within his expertise: light-duty trucks and vans. No heavy diesel, no hazmat fleets. Luna: Smart. So scalability — could he hire another mechanic to do audits under his brand? Lucas: That's the million-dollar question. Marcus has thought about it, but he says the quality control is brutal. A fleet audit isn't just checking boxes — it's understanding the specific wear patterns of each vehicle type, the common failure modes, the local driving conditions. He tried training a former coworker, but the reports came back inconsistent. For now, he's capped at around fourteen to sixteen clients. Luna: So it's a lifestyle business, not a unicorn. But $12,000 a month with no employees and minimal overhead is pretty nice. Lucas: Exactly. And he's actually considering dropping to ten clients and raising his price to $2,000 per quarter. He thinks the market will bear it because his knowledge is genuinely rare — most mechanics don't have the patience for paperwork, and most fleet managers don't have the technical depth. Luna: That's a classic niche play. He's competing on expertise, not price. Lucas: Absolutely. And the clients who value that — the plumber who saved $4,000, the bakery that reduced breakdowns by 60 percent — they're sticky. Marcus hasn't lost a single client in two years. Luna: I think that speaks to something bigger. A lot of people with trade skills underestimate how much their domain knowledge is worth to small business owners who are overwhelmed. Lucas: Totally. Marcus's pitch is simple: 'I'll keep your fleet running longer and cheaper than you can on your own.' It's hard to argue with that when the numbers back it up. And he built it all off the clock, one client at a time. Luna: You know, it's stories like this that remind me why we do this show week after week. And if you've found value in hearing these real-world paths to extra income, a handful of listeners chip in monthly through buy me a coffee dot com slash fexingo. That's literally what funds making this many episodes ad-free — no sponsors, no interruptions, just the kind of deep dives we want to do. Lucas: Yeah, it's a small group that keeps the lights on, and we're genuinely grateful. It lets us spend the time to track down people like Marcus and get the real details. Luna: Exactly. So back to scaling — Marcus has thought about digitizing parts of the audit? Like a checklist app? Lucas: He has. He built a simple spreadsheet template, but he says the real value is in the interpretation — knowing that a certain vibration in a 2019 Ford Transit could mean a failing driveshaft bearing, not just a wheel balance. That's not something a checklist captures. Luna: So it's essentially consulting, not software. That keeps the barriers to entry high for competitors. Lucas: Exactly. And Marcus is fine with that. He sees this as a long-term retirement plan — something he can do part-time even after he leaves the garage. He's already cut back to four days a week at his regular job. Luna: That's the dream, right? A side hustle that turns into a flexible career. Lucas: It is. And the key takeaway for anyone listening: you don't need a fancy degree. You just need a deep knowledge of something that other people find complicated and frustrating. Marcus found that in maintenance schedules. Could be tax codes, irrigation systems, commercial kitchen equipment. The pattern is the same. Luna: So next time you're fixing something at work and thinking, 'I could do this better,' maybe that's the side hustle whispering. Lucas: Exactly. That's the place to start.