We Are KingFleet

Originally founded by Raul Martinez as RoadKing in 2000, what began as a single 1977 Chevy service truck twenty-two years ago has become today’s KingFleet. With 26 highly experienced technicians, the majority of which possess ASE or CTTA certification and 150 years of experience between them, KingFleet has become a fully flexible mobile service that emphasizes punctuality and honors its commitments.

Mobile mechanic performing truck repair for fleet in California

How We Help Fleets
Across California & Arizona

Mobile truck repair units from KingFleet

24/7 Mobile & Breakdown Assistance

Here to answer your call 24 hours a day, 7 days a week, 365 days a year to get your fleet back on the road as quickly as possible.

Multiple Mobile Technician Locations & Heavy Wreckers Stations

With technicians across both California and Arizona in 22 mobile locations, we've staffed and equipped ourselves with the latest equipment to ensure your repair or tow is handled as efficiently as possible.

Setting the Industry Standard for Emergency Breakdowns & Tows

Our heavy-duty tow operators service all types of commercial vehicles, including trucks, trailers, motor homes, tour buses, cranes and much more.

Bus Repair

While buses share the same basic repair and maintenance requirements as other diesel vehicles, there’s an added importance to making sure everything works right given buses handle hundreds of extra passengers on a daily basis. Let KingFleet ensure your bus fleet is running smoothly and that your passengers always enjoy a comfortable ride.

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DOT Inspections

Keeping your truck and trailer on the road isn’t just a matter of keeping things in a good state of repair and condition, although that is an important part. There’s also a matter of meeting legal requirements from the Department of Transportation. KingFleet offers full and comprehensive DOT inspections for your truck and trailer to ensure they’re completely qualified to safely operate on the road.

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General Diesel Repair

With continuous innovation and consistent flexibility, the team at KingFleet offers a wide variety of services for whatever your diesel vehicle needs no matter the size or complexity of the problem.

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Lift Gate Repair

A lift gate is an essential component of a diesel vehicle, as it is responsible for lifting and lowering the cargo bed. However, like any other mechanical component, lift gates can experience wear and tear over time and may require repairs or maintenance services. KingFleet specializes in lift gate repair and maintenance services for diesel vehicles. Our team of experienced mechanics is equipped with the latest tools and technology to diagnose and repair any issues with your lif tgate.

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Mobile Repair

When it comes to mobile repair services, you want to make sure they can not only get the job done but get the job done right. With a dedication to constant and consistent innovation, the team at KingFleet can deliver everything you need in a mobile repair service so you can rest assured they’ll get the job done right while you relax in the comfort of your own home or office.

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Preventive Maintenance

While it may often seem like an excellent strategy to be reactive when it comes to repairs and maintenance, over time this can become costly and result in ever-increasing amounts of repairs that can diminish your vehicle’s performance. That’s why catching problems before they happen with preventive maintenance is not only cost-effective but can also help avoid increasing problems causing issues to performance.

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RV Repair

Although they come in all shapes and sizes, whether it’s just you or the whole family the RV is there to let you enjoy both all the comforts of home and the great outdoors. However, RVs require plenty of care and maintenance to ensure you can enjoy those comforts in peace without worrying about things breaking down. KingFleet offers comprehensive RV repair and maintenance services that will keep your RV in peak form so you can get back to enjoying your vacation.

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Roadside Assistance

Being trapped on the roadside with a broken down vehicle, whether it’s mechanical or electrical, is a nightmare for anyone with a vehicle but especially those operating diesel trucks. These issues not only eat into your bottom line but can also jeopardize your client relationships. Let the team at KingFleet fix your truck’s issues so you can get back on the road as soon as possible and put money in your pocket.

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When your truck’s issues prove to be too much for roadside fixes, you’ll often need a tow to get the vehicle back to your yard or the nearest repair shop. However, many towing services are separate from repair services meaning spending more funds you may not be able to afford especially if the towing distance is substantial. That’s why, in addition to repair services, KingFleet is also happy to offer in-house towing services so there’s no need to worry about separate costs for towing or waiting for a mechanic after the towing’s done.

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Mobile fleet repair services from KingFleet

Mobile Services in
California & Arizona

Not only do our 26 technicians have a century and a half of experience between them, we’re also constantly innovating and adopting the latest technologies to better serve our customers. To get an idea of what the KingFleet team can do for you here are the services we offer.

Mobile Maintenance &
Repair in California & Arizona

At KingFleet, our experienced technicians are fully trained and equipped to handle all of your diesel equipment's maintenance and repair needs. We use only the highest quality parts and fluids to ensure that your vehicle runs at its best.

Mobile mechanic performing coolant system repair on truck in Sacramento

The coolant system in a diesel vehicle is a crucial component that helps keep the engine running at the proper temperature. Without a properly functioning coolant system, the engine can become overheated, causing damage and potentially leading to costly repairs. At KingFleet, we understand the importance of regular coolant system maintenance and repair services for diesel vehicles.

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Mobile mechanic performing engine repair on truck in Arizona

Diesel engines require regular maintenance and repairs to keep them running smoothly. KingFleet is a reliable and experienced diesel engine repair shop that can help keep your diesel vehicle on the road. When it comes to diesel engine repair, one of the most important things to keep in mind is that diesel engines are built differently than gasoline engines. Diesel engines rely on compression rather than spark plugs to ignite the fuel, which means they have different components that need to be checked and maintained.

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Mobile mechanic performing exhaust repair on truck in California

The exhaust system of a diesel vehicle is a crucial component that plays a vital role in the overall performance and emissions of the vehicle. It is responsible for removing harmful gases and pollutants from the engine, and in turn, keeping the vehicle running smoothly and efficiently. However, due to the constant use and exposure to the elements, the exhaust system can become damaged or worn over time, requiring repair or maintenance services. KingFleet specializes in diesel exhaust system repair and maintenance services.

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Mobile mechanic performing AC repair on truck in Phoenix

HVAC systems, or heating, ventilation, and air conditioning systems, play a vital role in maintaining a comfortable and safe environment for drivers and passengers in diesel vehicles. However, these systems can experience problems that require repair and maintenance services. We understand the importance of properly functioning HVAC systems in diesel vehicles. KingFleet offers high-quality maintenance and repair services to keep your truck’s HVAC system in optimal condition.

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Mobile mechanic performing oil & fluid service on truck in Orange County, CA

Oil and fluid services are essential for the proper functioning and longevity of diesel vehicles. At KingFleet, a top-rated mechanic shop located in Hayward, California, we understand the importance of regular maintenance for diesel engines and offer a range of services to keep them running at their best.

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Mobile mechanic performing suspension repair on truck in Arizona

KingFleet specializes in providing top-notch suspension maintenance and repair services for diesel vehicles. Our team of experienced mechanics understands the unique needs and requirements of diesel engines, and we use the latest technology and equipment to ensure that your vehicle is running at its best.

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Mobile mechanic repairing a truck transmission in California

When it comes to diesel vehicles, transmission and clutch maintenance, and repair services are crucial to ensuring that your vehicle runs smoothly and reliably. At KingFleet, we understand the importance of these services and are dedicated to providing top-notch maintenance and repair services for diesel vehicles.

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Mobile Maintenance & Repair for Your Fleet

If you’re a fleet manager, one of the most important responsibilities you have is to ensure that your fleet or fleets are well-maintained to prevent breakdowns and avoid costly repairs. KingFleet offers a comprehensive range of fleet maintenance services that cater to the specific needs of diesel trucks and trailers. These services include preventive maintenance, inspections, repairs, and fleet management.

Why Choose KingFleet?

Contact Us to Schedule a Mobile Service

Call us for 24/7 breakdown assistance or schedule your equipment in for a mobile repair or service using our service request form.

KingFleet Call Center:


Service Areas (Within a 50mi Radius):

Northern California, CA:
Bay Area & Sacramento Valley

San Diego, CA

Orange County, CA

Inland Empire, CA

Phoenix, AZ

24/7 Breakdown Assistance
Including Statutory Holidays