Answers for auto repair shop owners.
Bay capacity, effective labor rate, techs who flat-rate their way around you, and customers who bring their own parts.
44 questions, 44 of them with a word-for-word script, the actual math, or a template you can copy.
Pricing
All pricing →How do I raise my shop's labor rate without losing customers?
Raise it on a set date, put it on the wall and the invoice, and stop apologizing for it. The customers who leave over ten or fifteen dollars an hour were not paying for your overhead anyway.
Script The mathHow do I charge a diagnostic fee and defend it when customers push back?
Charge it every time, state it before you touch the car, and apply it toward the repair if they book with you. It pays for the time your best tech spends thinking, not turning wrenches.
Script The mathCan I charge a shop supplies or hazmat fee, and how much?
Yes, and most customers accept a small, clearly labeled fee without pushback because it's standard in the industry. Keep it a flat, reasonable percentage or dollar amount, and never make it look padded.
Script The mathHow do I raise prices across the board without it feeling like a scramble?
Pick a date, calculate the number from your actual cost increases, announce it once in writing, and apply it to everyone the same way. A clean, universal increase reads as confidence. A quiet, selective one reads as something to hide.
Script The math
Finance
All finance →How do I calculate my shop's effective labor rate?
Total labor dollars collected divided by total hours actually worked by techs. If it's below your posted door rate by more than 20 percent, you're bleeding time somewhere.
The math ChecklistHow do I know if a job actually made money for the shop?
Track gross profit per bay hour on every job, not just whether the invoice looked big. A big invoice with a huge parts markup and low labor can still be a bad use of the bay.
The mathIs it okay if my best tech makes more money than I do?
Yes, and if you're the owner still turning wrenches, it should happen more often than it scares you. Your job is to make money on the shop, not out-earn your best employee at the bench.
The mathShould I take on fleet accounts that pay net 60?
Only if the volume and margin are worth financing them for two months, and only with a credit application and a hard cap on how much unpaid balance you'll carry at once.
The math ChecklistHow should I structure progress billing on a build that takes months?
Bill on defined milestones tied to work actually completed, not on a calendar schedule, and never let more than a few weeks of unbilled labor pile up. A build that runs four months with one invoice at the end is a build where you're financing the customer's project with your own payroll.
The math TemplateHow do I pay myself a real wage instead of whatever's left over?
Set a fixed weekly or biweekly owner paycheck based on a market wage for your role, and pay it on payroll like everyone else. Profit distributions come later and separately, not instead of it.
The math ChecklistHow do I collect from a customer who refuses to pay?
Escalate in stages, in writing, with dates, before you call a lawyer or small claims court. Most non-payers cave once they see you're organized and not going away.
Script TemplateWhat numbers should I actually look at every week to run the business?
Pick five to seven numbers you can pull in fifteen minutes every Monday, not a forty-tab spreadsheet nobody keeps updated. Cash, sales booked, jobs completed, and one leading indicator of trouble beat a dozen vanity metrics.
Template ChecklistHow do I manage cash flow when customers are stretching out how long they take to pay?
Tighten terms going forward, chase the aging receivables aggressively, and build a cash buffer sized to your actual collection lag, not your best-case assumption. You can be profitable on paper and still run out of cash if collections slip.
The math ChecklistShould I buy or lease my next big piece of equipment?
Buy what holds its value and you'll run for years past the loan term. Lease what changes fast, gets used seasonally, or you'd want to upgrade in three years anyway.
The mathShould I take on debt to grow the business?
Only if the debt funds something that generates more cash than it costs, on a timeline you can survive even if growth is slower than planned. Debt to cover a cash shortfall from an already-struggling operation is a different and much riskier decision.
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Operations
All operations →Should I install parts a customer buys themselves?
No, or only with a signed waiver and full labor rate, no warranty on the part. It's rarely worth the comeback risk for the money you save the customer.
TemplateWho pays when a repair comes back, the shop or the tech?
The shop eats the customer-facing cost every time, no exceptions on that. Whether the tech eats any of it internally depends on whether it was a mistake or bad luck.
Script The mathWhen should I add a second bay or a third tech?
When your bays are consistently booked out more than a week and you're turning away work you'd take, not when you're just busy this month.
The math ChecklistWhat do I do about techs who won't clock into jobs properly?
Make clocking in the job the same physical action as picking up the ticket, and treat unclocked time as lost data you have to chase every single time it happens.
Script ChecklistHow do I turn down a job I can't do profitably?
Say it plainly and quote what it would actually cost if you did take it. Most customers self-select out once they hear a real number for a job that would eat your whole day.
Script ChecklistWhat do I do about cars sitting on my lot waiting for customer approval?
Set a firm storage and decision deadline in writing at drop-off, and enforce it the same way every time. A lot full of unapproved cars is dead capital and a liability sitting outside your building.
The math TemplateWhat should my warranty policy be on parts and labor?
Match or slightly beat your parts supplier's warranty on parts, and offer a clear labor warranty of 12 months or 12,000 miles on your own workmanship, in writing, on every invoice.
TemplateShould I take on used car dealer inspection and recon work?
Only at a set volume rate that still protects your margin, and only if it doesn't crowd out your higher-margin retail customers during peak hours.
The mathWhat's my legal exposure for tuning a customer's diesel or gas engine, especially around emissions?
Real, and it's bigger than most shops treat it. Delete tunes and defeat devices carry federal penalties that land on the shop, not just the customer, so know your state and federal rules before you sell a tune.
Template ChecklistHow do I build an employee handbook I'll actually use, not just a binder that sits on a shelf?
Write ten pages of the policies that come up every year, in plain language, and actually enforce every line in it. A fifty-page handbook nobody reads protects you less than a ten-page one everyone has actually opened.
Template ChecklistHow do I cover my own vacation without the business shutting down while I'm gone?
Build coverage in stages over months, not the week before you leave, starting with a written list of every decision only you currently make. If that list has more than a few items on it, that's your actual project before you can leave.
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Hiring
All hiring →Should I pay my techs flat rate or hourly?
Flat rate rewards speed and can pay your best techs very well, but it needs steady work volume and honest time standards or it backfires fast. Hourly is simpler and safer for a smaller or newer shop.
The mathWhen should I hire a service advisor instead of running the counter myself?
When you're the one writing tickets during the day and the one who should be managing techs, quoting jobs, or working on the business isn't happening. That's an expensive trade to keep making.
The mathHow do I know if I can actually afford my first hire?
Run the fully loaded cost against the revenue you're already turning away, not against your current cash balance. If the math doesn't clear with room to spare, you can't afford it yet.
The math ChecklistHow do I write up an employee and actually document performance problems?
Write it down the same day, in plain facts, with a clear expectation and a deadline, and have them sign it. A folder of dated write-ups is what protects you and gives the employee a real chance to fix it.
Script TemplateWhat's the right way to fire someone so it doesn't blow up on me?
Make the decision before the meeting, keep the meeting short and factual, and have logistics ready so there's no ambiguity about what happens next. The meeting itself should take five minutes, not thirty.
Script ChecklistHow do I write a job posting that actually filters out the wrong people?
Put the real pay, the real hours, and the real hard parts of the job in the posting, on purpose. A posting written to attract everyone attracts everyone, including everyone wrong for the job.
Template ChecklistShould I pay for an employee's training, and how do I make sure they don't take it straight to a competitor?
Pay for training that makes your team better, and use a simple repayment agreement tied to a time period, not a non-compete. It protects your investment without pretending you can stop someone from leaving.
Template ChecklistHow do I know when it's time to hire a manager, and how do I find the right one?
Hire a manager when the business has outgrown your personal attention span, not your patience. Look inside first for someone who already has the trust of the team, and only go outside if nobody internal is close.
Script ChecklistWhat do I do when a key employee suddenly quits?
Cover the immediate gap first with a short-term plan, then find out honestly whether it was preventable before you rush to backfill the exact same role the exact same way. A rushed replacement hire often repeats whatever problem drove the last person out.
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Sales
All sales →Should I give repair quotes over the phone?
Give a range for common jobs, never a firm number sight unseen, and always disclose that the final price depends on what your tech actually finds on the car.
Script The mathHow do I fire a bad customer without burning a bridge or looking unprofessional?
Be brief, be honest that it's not a fit, and don't relitigate every past incident. You're allowed to stop serving someone who costs you more in stress and margin than they're worth, and doing it calmly protects your reputation more than tolerating them does.
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Leadership
All leadership →How do I fire a customer who's abusive to my staff?
Tell them plainly you won't be able to help them going forward, and back it up by refusing to schedule them. No employee should have to take abuse to keep a customer on the books.
Script ChecklistHow do I get out of the truck/bay and actually start running the business instead of just working in it?
Replace yourself one skill at a time, starting with the task that's easiest to hand off, and protect a fixed block of office time on your calendar like it's a customer appointment. You won't get pulled out all at once, and trying to will just put you right back in the field within a week.
The math ChecklistHow do I set a real vacation policy for myself as the owner, not just whenever I can sneak away?
Put your own time off on the calendar for the year, in writing, the same way you'd schedule payroll, and treat moving it as the exception, not the norm. If you don't schedule it in advance, it will always lose to whatever feels urgent that week.
Template ChecklistHow do I decide whether to open a second location?
Open a second location only once your first one runs profitably without your daily presence, not because it's busy. A second location amplifies whatever systems and management you already have, good or bad, it doesn't fix a first location that's only working because you're always there.
The math ChecklistHow do I handle a serious disagreement with my business partner?
Separate the business decision from the relationship, get it in writing once you agree, and use your partnership agreement before you use your feelings. If you don't have a partnership agreement that covers this kind of dispute, fix that the moment things calm down, not after the next one.
Script ChecklistHow do I know if my business could actually survive a week without me?
Run the test for real, not hypothetically: leave for a genuine week with your phone off except for a true emergency line, and see what actually breaks. What breaks is your real to-do list, not a guess.
The math Checklist
Every owner hits these
Not specific to your trade, but they show up in every shop that has employees, customers, and a bank account.