Diesel Engine Service
Full diagnostics, tune-ups, and repairs for diesel engines. We read the codes, find the real problem, and fix it right the first time.
Welcome to Hardknocks Diesel
Your Truck Deserves a Mechanic Who Actually Cares
We've spent years learning what makes diesel engines tick — and what makes them quit. Now we apply that know-how to keep your truck on the road, right here in Missouri Valley. No shortcuts, no surprises — just honest work done right.
Missouri Valley, IA
Same-Day Service Available
Fair & Transparent Pricing
114
S 8th St
Missouri Valley
Missouri Valley
What We Do
Complete Diesel & Auto Repair
From routine maintenance to complex diagnostics, we handle it all with the care your vehicle deserves.
Brake & Suspension
Brake pads, rotors, calipers, shocks, and struts. We keep your truck stopping safely and riding smoothly on every road.
Transmission & Drivetrain
Automatic and manual transmission service, clutch replacements, and driveline repairs. We diagnose the issue before we touch a bolt.
Electrical & Diagnostics
Battery, alternator, starter, and wiring issues. Our scan tools and experience track down electrical gremlins fast.
Oil Changes & Maintenance
Scheduled maintenance that prevents breakdowns. Oil changes, filter replacements, fluid services, and multi-point inspections.
Cooling System
Radiators, water pumps, thermostats, and coolant flushes. Overheating is serious — we catch it before it becomes a tow.
Local
Owned &
Operated
Operated
Our Story
Built on Hard Work and Honest Mechanics
Hardknocks Diesel started with a simple idea: bring honest, no-nonsense auto repair to Missouri Valley. We know how much your truck means to you — it's your livelihood, your weekend adventure, your daily drive. When it breaks down, you need someone who'll give it the attention it deserves.
We treat every vehicle that rolls into our shop the way we'd want ours treated: with care, transparency, and a commitment to doing the job right. No upselling. No vague estimates. Just clear communication and quality work.
Honest Assessments
We tell you what you need — and what you can wait on.
Right Here in Town
Conveniently located on S 8th St in Missouri Valley.
Your Trust Matters
We've earned our reputation one truck at a time.
Why Hardknocks
The Difference Is in the Details
100%
Commitment to Quality
Local
Owned & Operated
Fair
Transparent Pricing
Same Day
Service Available
01
We Listen First
Tell us what's happening — the noises, the warnings, the symptoms. We take the time to understand before we start turning wrenches.
02
Clear Explanations
No mystery jargon. We explain what's wrong, why it matters, and what your options are — so you can make informed decisions.
03
Quality Parts
We use reliable parts from trusted suppliers. Whether OEM or aftermarket, we recommend what's right for your situation and budget.
04
No Surprises
We communicate before we proceed if anything changes. You'll never get a bill that surprises you — that's not how we do business.
What People Say
Trusted by Locals Like You
Our customers keep coming back — that speaks for itself.
"Finally found a shop I can trust. They explained exactly what was wrong with my truck, gave me a fair price, and had me back on the road the same day. Won't go anywhere else."
"My diesel was making a sound I didn't like. Hardknocks figured it out quickly and didn't try to sell me stuff I didn't need. That kind of honesty is rare — I'm a customer for life."
"Great experience from start to finish. They were straightforward about the repair my truck needed, finished it promptly, and the price was exactly what they quoted. Highly recommend."
Get in Touch
Visit Us or Give Us a Call
We're right here in the heart of Missouri Valley. Pull in anytime during business hours, or reach out ahead of time — we're happy to answer questions.
- Address
- 114 S 8th St
Missouri Valley, IA 51555 - Phone
- (712) 600-0145
- Hours
- Mon – Fri: 8:00 AM – 5:00 PM
Sat – Sun: By Appointment
Send Us a Message
Tell us what's going on with your vehicle and we'll get back to you as soon as we can.
Message Sent!
Thanks for reaching out. We'll get back to you shortly. If it's urgent, feel free to call us directly at (712) 600-0145.
