Our team delivers quality work with integrity each and every time.

There are a lot of maintenance and repair shops that promise high-quality work. However, few—if any—can rival the attention to detail, integrity, and dedication you’ll find in our team at State Line Diesel Performance LLC. In fact, it’s those three components that drive our team each day. Whether we’re providing maintenance work for your fleet or installing vehicle lift kits, we treat each job with care.

Our owner and lead mechanic, Jake Engle, worked in the motorsports industry for 15 years, both with Hendricks Motorsports and Stewart Hass Racing. When he decided to retire from NASCAR and spend more time with his wife and three children, he began working for a local Ford dealer as a diesel apprentice. With hard work and passion on his side, he quickly became the main line technician and achieved his Ford certifications.

"Got my truck running better than it ever has.”

“I do not usually leave reviews but I have been searching for a good diesel shop for years, often leaving me to do the work myself. Thankfully someone recommended me to Jake at State Line. They took my truck in, communicated through the whole process, and got my truck running better than it ever has. I highly recommend State Line Diesel Performance LLC and will be returning in the near future.”

★★★★★ 22^th August 2018 - Costan B.

Straight talk. Solid repairs. Schedule your visit now.

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Services We Offer

Truck Maintenance & Repair

We have the skills and equipment needed to ensure your truck gets the care it needs, so you can get back on the road in no time.

Vehicle Customization

Vehicle customization can take your truck to the next level, giving it a unique makeover that turns heads and builds on the pride you already have in it.

Straight talk. Solid repairs. Schedule your visit now.

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Trust Our Team for All Things Fleet and Truck Maintenance

Now, with the help of his team and state-of-the-art equipment—along with the relationships he’s built over the years—he uses his knowledge and skills to deliver high-quality results and exceptional customer service when you need them most. Jake and his team can assist you with every facet of your truck’s needs, ensuring you get the service and care you deserve.

If you need maintenance and repair for your diesel truck or fleet in the Charlotte, North Carolina area, or if you want your vehicle to stand out above the rest, stop by and talk to our team to see how we can help.

Why State Line Diesel Performance LLC?

You can count on our team’s 15+ years of experience to provide you with the services you need, whether that’s maintenance and repair, customization, or something in between. The attention to detail we deliver in all our services is second to none. We offer a 12-month/12,000-mile workmanship warranty in addition to standard manufacturer warranties for our parts.

See what some of our satisfied clients are saying about our fleet maintenance, custom upgrades, and detailing services.

Alex Tate

Had a great experience and highly recommend their services. Great customer service as well.

Kyle “Dobe2901” Mitchell

Very knowledgeable on trucks. Even though they normally work on diesel trucks. They worked on my Nissan Titan for some fab work on the mounting bracket for lower control arm. Looks like it never happened. They were able to keep their time line of 2-3 weeks for completion.

Devin Hall

great place, good prices and easy to work with

Guadalupe Juarez

We take our trucks there because we trust their work and they always communicate with us if they run in to an issue or if anything else needs to be done . Definitely recommend

Scott Lemons

After another shop worked on my 2024 Ford F-350 Super Duty, I ended up having to redo almost everything. Thankfully I found Stateline Diesel, and the difference was night and day.

These guys actually know what they’re doing. They went through the truck correctly, fixed the issues the previous shop created, and made sure everything was done right the first time. Communication was great, turnaround time was solid, and the quality of work gave me confidence in my truck again.

It’s hard finding a shop you can truly trust, especially with newer diesel trucks, but Stateline Diesel earned my business going forward. Highly recommend them to anyone needing honest, knowledgeable diesel work done right.

Todd Boyle

Jake and his team at Stateline Diesel Performance are First Class. They are very knowledgeable, detailed and transparent on everything.

Finders keeperz

I highly recommend this shop. Allow me to “highlight” Jake! He’s professional, knowledgeable, and attended to all my questions and concerns. Ultimately he delivered excellent customer service! -Russ R

Angela Vega

I’m honestly surprised by some of the reviews I’ve seen, because my experience with State Line Diesel, their employees, and especially the owner has been nothing but positive.

I’m a woman who drives a big truck, and for most of my life my dream was to own a monster truck! Now, at my age, I’ve toned it down just a bit—but not too much. I lifted my truck 8 inches, changed the tires to 37s, added rock lights, cab lights, grill lights, and new wheels. From start to finish, everyone at Stateline Diesel was incredibly kind, welcoming, and made me feel right at home.

At the end of the day, this is an automotive shop. They’re not trying to win a Mr. Congeniality award—and frankly, I don’t expect them to. I don’t get offended by directness. What matters to me is being respectful, being professional, and doing quality work. Stateline Diesel is here to do great work on trucks, and that’s exactly what they did. If some people are upset about the owner’s personality, maybe that’s something they need to reflect on themselves. I’m far more concerned with skill, integrity, and results—and this shop delivers on all three.

State Line takes real pride in their work, and if something isn’t to your liking, they make it right. I truly appreciate their honesty, transparency in pricing, and straightforward feedback. At the end of the day, this is a business—they can’t give things away for free. Quality work costs money, they need to pay their technicians, and truck upgrades don’t come cheap. But when you’re investing this kind of money, you want to take your truck somewhere that genuinely cares.

State Line Diesel does exactly that, and I wouldn’t hesitate to recommend them!

Joshua Meyers

I don’t think I have ever left a review before, so the fact that I am going out of my way to leave one for these folks should speak for itself.

The folks over here are honest and went above and beyond to take care of me.

Are they busy? absolutely. But that should be an indicator to you of the work that they do because people want their business. So be patient with them and give them some sympathy! Good work is hard to find in this business and they deliver it so be patient with them and they will make sure you are taken care of!

I’m definitely going to continue to do business with them. It’s very hard to find genuine people who are just trying to take care of people. Look no further if that’s what you are after.

The Gas Man

Found this company more or less by accident. One of our service vehicles suffered catastrophic engine failure on the side of the interstate and this company came up when searching for a diesel specialist.

Pick the vehicle up yesterday so as yet I can't really comment beyond the fact that the work was done. The shop is extremely busy and the supply chain did delay our completion date.

The only important question is would you use this company again? Without a doubt, yes and I would recommend them to others.