Throughput just means how much work your shop gets done over time. If you can finish more jobs per day, you usually make more money even if the number of trucks stays the same.
Scheduling is deciding when each job step happens. The goal is to keep bays from sitting idle or getting stuck on one job so other work can keep moving.
Bay time is how long a truck sits in the shop’s service stall. If one job holds the bay too long, other jobs can’t get in and the whole shop slows down.
Diagnostic flow means how smoothly cars move through the “figure out what’s wrong” step. If diagnostics get delayed, the rest of the repairs can’t start on time either.
A work in progress screen is a board or dashboard that shows what jobs are currently being worked on and where they are in the process. It helps the shop spot delays before they snowball.
LIVE
This is the Automotive Repair podcast network.
It's your weekly Blitz with Chris keeping you in the game.
Let me tell you something most diesel shop owners don't want to hear.
You're working on some of the most complex vehicles on the road.
You've got higher requirements, longer jobs, bigger tickets, and somehow your shop still
feels tight on cash.
You're busy.
The bays are full.
The phones are ringing.
You're on the side of the highway, putting your lives in danger.
But the numbers don't reflect the opportunity sitting right in front of you.
That's not a market problem.
That's not a technician problem.
That's a leadership and operational problem because diesel shops, when run correctly, should
have higher average repair orders, stronger margins, and more predictable workflow than
general repair shops.
But most of them don't.
Today, we're breaking down exactly why, and more importantly, what you need to change
starting this week if you actually want to capitalize on your diesel advantage.
Today's episode is about understanding the built-in advantage diesel shops have, why
most owners fail to leverage it, and how to fix your pricing, scheduling, productivity,
and marketing so your shop actually performs at the level it should.
So we're going to start here.
Diesel work is more complex.
Diagnostics take longer.
Repairs are heavier.
The consequences of failure are bigger.
So logically, your average repair order should be significantly higher, but in a lot of shops,
it's not.
Why is that?
Because you're undercharging or you're under-presenting one or the other.
You either have weak or inconsistent or non-inspections.
Advisors are not confident selling complex jobs.
There's no structured digital inspection process.
And you're missing stacked opportunities on every vehicle.
If your average repair order doesn't reflect the complexity of the work, your process is broken.
This isn't about charging more randomly.
This is about complete inspections, clear documentation, confident presentation, and a defined sales process.
Most diesel shops leave thousands of dollars per week on the table, not because the work isn't there,
but because they don't capture it.
All right?
This is the double-edged sword, right?
You know, all your fleets out there.
So let's talk about fleets for just a minute.
This is where a lot of diesel shops get stuck.
Fleet work brings consistent volume, predictable workflow, and long-term relationships.
But here's the problem.
Volume without margin is just organized chaos.
Fleet accounts are going to push pricing, they're going to expect priority,
and they're going to demand turnaround speed.
And if you're not careful, you build your entire process around being busy, not profitable.
Also, they're going to want to push you out to 30, 45, and 60-day terms.
For me, they should be paying extra for all of those things we just listed,
because you're not a banker.
I don't want you to be a bank.
And if you're a bank, they get to charge interest so they can pay more, all right?
You have to decide, are you building a high-volume shop or a high-performance shop?
Because both of those things are not the same thing and they cannot exist together.
Healthy diesel shops, they set clear pricing structures.
They control scheduling.
They don't let fleets dictate your base.
They protect technician productivity.
They measure profit per hour, not just car count.
They also get paid when the job's done for the most part, all right?
And this is exactly where I see major disconnect with diesel shop owners.
They rely almost entirely on word of mouth and a handful of fleet accounts,
and they call that marketing.
That's not a strategy, that's dependency.
If you want control of your car count, your customer mix and your profitability,
your marketing has to be intentional.
That's why I only recommend shop marketing pros.
They specialize in the automotive space.
They can help you with your diesel shops.
They understand how to position your shop, build a long-term brand,
and create a steady pipeline of the right customers, not just whoever shows up.
Because the goal isn't more trucks.
The goal is better cars, better jobs, and better margins.
If your marketing isn't doing that, it's time to fix it.
Give my friends at Shop Marketing Pros a call.
So let's talk about scheduling and throughput.
This is a big thing where diesel shops bleed time.
Diesel jobs are different.
They take longer.
They're less predictable.
They can lock up bays for days.
And if your scheduling isn't tight, one bad decision can choke your entire shop.
Here's what I see all the time.
Overloading the schedule, no separation between diag and repair time.
Letting big jobs pile up.
There's no production control.
You're not running a schedule.
You're reacting to it.
Strong diesel operations.
They break work into phases.
They control bay time intentionally.
They protect diag flow.
And they manage their whip screen aggressively.
That's the work in progress screen.
Because throughput, not truck count, is what drives profit.
All right?
I want you to think about this really hard.
Technicians' skills should drive your pricing power.
You've got specialized technicians.
And that's a huge asset.
But here's the question.
Are you actually monetizing that skill?
Or are you pricing like the shop down the street that doesn't do what you do?
If your labor rate doesn't reflect complexity, skill level, equipment,
investment, then you're undervaluing your entire operation, OK?
And most of you technicians are out there.
You undervalue what you do because you can do it.
I can't work on a semi.
My brother can.
You should be paid for that.
And you should be paid well.
If everybody could do it, then the labor rate would be 100 bucks an hour
instead of 200 plus like it should be, OK?
So here's the leadership truth.
If your pricing doesn't match your capability, that's not a market issue.
That's just a decision.
And it's a poor decision at that.
You know, we talked about marketing just a second ago.
Again, shout out to Shop Marketing Pros.
Most diesel shops don't market.
They just exist.
And they rely on word of mouth, fleet relationships, walk-ins.
That's not dominance.
That's passive.
You should be owning your local diesel niche online.
You should be targeting fleet accounts intentionally.
You should be building authority in your market.
You should be showcasing your expertise because here's the opportunity.
Diesel is specialized.
Specialized shops should stand out.
If you don't, you're invisible.
Why are you being invisible?
Diesel isn't going anywhere.
But what is changing?
Costs are rising.
Competition is getting sharper.
Well-run MSOs are entering the space.
Customers expect more transparency and professionalism.
The gap between average and elite diesel shops is widening fast.
And most shops don't even realize which side they're on.
Here's our to-dos for this week.
Audit your last 20 repair orders.
What's your true average repair order?
What should your goal be?
Where did you miss opportunities?
I need you to review your labor rate.
Does it reflect your specialization?
Look at your schedule right now.
How many jobs are clogging bays?
Where's time being lost?
Next, evaluate your fleet accounts.
Which ones are actually profitable and which ones are costing you money?
And then I need you to define one marketing action.
Is it website?
Is it SEO?
Is it fleet outreach?
Is it branding?
What is it?
And close the loop.
All right.
Here's the truth.
Diesel shops should have an advantage.
But an advantage only matters if you use it.
Right now, some of you are sitting on an incredible opportunity
and you're running it like an average shop.
That's a leadership decision.
That's a head in the sand decision.
So here's your challenge.
I need you to raise one standard this week.
Fix one process you've been ignoring.
Stop accepting busy as success.
Because the shops that win in this next phase of the industry
are the ones that operate with intention, not habit.
All right.
If this episode hit home, don't just move on.
Do something with it.
Share it with another shop owner who needs to hear it.
Make sure you're subscribed so you don't miss what's coming next.
And as always, keep leading, keep growing.
And we'll see you on the next time on the weekly Blitz.
Remember, rise and grind.
Everybody have a great day.
You've been listening to the weekly Blitz with Chris Cotton
on the Automotive Repair Podcast Network.
Download our exclusive podcast app at automotiverepairpodcastnetwork.com
because the best conversations in the industry start here.
Want expert advice on running your shop?
Well, Chris is listening.
Check the show notes for his email and send him your topics.
About this episode
Diesel shops have a built-in advantage—complex work, longer diagnostics, and predictable workflow potential—but many owners don’t translate that into higher tickets and stronger margins. The episode breaks down why shops undercharge (weak inspections, inconsistent documentation, and advisors lacking confidence selling complex jobs) and how to fix it with clear pricing, tighter scheduling, and protecting diagnostic flow. It also challenges labor rates to reflect technician skill, and pushes owners to audit repair orders and review marketing actions.
“If your pricing doesn’t match your capability, that’s a decision.”
“Throughput—not car count—is what drives profit.”
“Fleet work should support your business, not control it.”
“You’re not running a schedule—you’re reacting to it.”
In this episode of The Weekly Blitz, Coach Chris Cotton breaks down why diesel repair shops should be outperforming general repair shops—and why many aren’t.
From underperforming ARO and mismanaged fleet accounts to scheduling inefficiencies and weak marketing strategies, this episode uncovers the operational and leadership gaps holding diesel shop owners back.
Chris shares practical strategies to improve profitability, increase efficiency, and fully leverage the built-in advantages of diesel specialization.
Diesel shops have a built-in advantage—higher ticket potential, specialized expertise, and strong demand.
So why are so many still struggling with profitability?
In this episode, Coach Chris Cotton breaks down the operational, pricing, scheduling, and marketing mistakes that are holding diesel shop owners back—and what to do about it.
If your shop is busy but not producing the results it should, this episode will challenge how you’re thinking and give you clear actions to take.
The Weekly Blitz is brought to you by our friends over at Shop Marketing Pros. If you want to take your shop to the next level, you need great marketing. Shop Marketing Pros does top-tier marketing for top-tier shops.
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