About Us

Your Local Diesel Professionals in Maryborough

Real-life strategy to reach your goals.

Core Diesel is your trusted one-stop shop for diesel repairs across the Fraser Coast. We provide reliable servicing and expert maintenance for domestic vehicles like 4WDs and small trucks, as well as heavy machinery and civil equipment.

Our team brings together a wide range of backgrounds and experiences, united by a shared commitment to quality. No matter what diesel-powered machine you run, we have the tools and knowledge to keep it going strong.

We strive for diversity across the globe

How we got here

It all started in 2013 when Jye Core opened Core Diesel in a 220 square metre shed in Maryborough. In the early days, the focus was on contract servicing for mines and large organisations across Queensland. With consistent hard work and high standards, the business steadily grew.

Today, Core Diesel operates with a team of 13, including one apprentice. Our main workshop now covers 864 square metres under roof, and we run a fleet of custom-built field service trucks. These purpose-designed vehicles are fully equipped to handle on-site repairs across the region.

We are proud to be the authorised Mack, UD and Volvo service agent for the Wide Bay area. This means we are trusted to perform warranty work on these vehicles. In 2020, we welcomed the local Ryco 24/7 franchise into the Core Diesel family.

Giving back

At Core Diesel, we are proud to be part of the local community. As we have grown, we have stayed true to our roots as a friendly, reliable workshop supporting the people we serve.

We primarily focus on developing the next generation of diesel professionals and actively support apprenticeships and training opportunities.

Our Core Values

Our three core values are dependability, customer service and uniqueness.

Dependability

If you rely on diesel equipment to do the job, you need a team that delivers. Our technicians are hand-picked for their skill, and we invest in cutting-edge equipment to match.

We are equipped to carry out everything from complete engine rebuilds on large plant machinery to quick diagnostics and logbook servicing for your 4WD. No job is too big or too small – only important.

Customer Service

Whether you drive a single ute or manage a whole commercial fleet, we treat every job with care and respect. We believe in fair pricing, clear communication and treating every client like a valued partner.

Uniqueness

We aim to be the only diesel repair service you will ever need. Keeping parts, tools, and technicians under one roof ensures consistent quality and faster turnaround. We stock amanyspares and offer upgrade options to improve performance and extend equipment life.

Real-life results

Some of our happy customers

We generate results for our customers

“Great service and great communication. Cameron sent photos during the progress and kept me up to speed. Very happy with service from these guys.”

Andrew

“Love the service and confidence they gave me with my vehicle. If you consider the prices expensive, just remember you’re paying for quality “

J Keane

“Very happy with the service carried out, would recommend to anyone having trouble with diesel engines to talk to Core diesel first, before going to somebody who thinks they know how to fix a problem . Not too many people like this provide a quality in workmanship”

Don

“Great People at Core Diesel. On a trip up the coast Samantha fit us in for urgent inspection when we were passing through town. Service was very quick and informative from the guys in the workshop, would highly recommend.”

Darragh

“Absolutely outstanding service from Core Diesel Maryborough! The team provided true Aussie workmanship—professional, knowledgeable, and meticulous. They kept me updated every step of the way while working on my HZJ75 Series Land Cruiser with a 1HZ motor. From the initial diagnostics, they quickly found the issue in the top end and let me know my timing belt and water pump fan were about to fail—saving me from a major breakdown, and a hefty repair bill. The whole experience left me extremely satisfied and confident my motor is ready for many more adventures. Highly recommended for anyone seeking diesel specialists who truly care!”

JMAC

“I recently had my machine “Kanga “ serviced by this amazing mechanic business, and I couldn’t be happier with the experience! They were incredibly thorough, taking the time to explain everything they were doing and giving me a heads-up on potential issues to watch out for in the future. Their professionalism and expertise really stood out, and I highly recommend them to anyone in need of top-notch service!”

Nic

“Honestly I wouldn’t take my pride & joy anywhere else, the core diesel family have looked after all my vehicles for over 10 years they hold them self to the highest standard with professional work on all vehicles and will contact you with any issues they find…

For anything from a small service to major engine rebuild they’ve looked after me & can’t thank them enough for all that they have done”

Blake

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