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The pin is Edinburg, not an address. Super Mario's Diesel Road Services works from a vehicle and comes to you.

Mobile RV tech · Edinburg, Texas

Super Mario's Diesel Road Services

Call 956-533-9653 smdieselroadservices.com
Takes after-hours callsThe business's own site mentions 24/7, emergency or after-hours service. Rates for those calls are often higher.What do these terms mean?
Own this business? Update this listing

Super Mario's Diesel Road Services is a mobile diesel mechanic based in Edinburg, Texas, and it comes to you, whether you are broken down on the highway or parked at an RV park. When you call, you talk directly to the owner, Mario Pena Jr, and he is the one who drives out and does the work.

It works on RV and motorhome chassis, including Spartan, Freightliner, Workhorse and Ford. On the road service side it handles brakes, leveling jacks and hydraulic issues, no-start and fuel problems, water pumps, alternators, starters, wheel seals, belts and tensioners, A/C and heating, electrical troubleshooting, computer diagnostics, welding and fabrication, trailer repairs, driveline, exhaust and suspension work. A rig that will not release its brakes or raise its jacks after months in an RV park is exactly the kind of call it describes handling on location.

No trip fee, hourly rate or diagnostic fee is published, so ask about the trip fee when you call. It advertises "24 HOUR ROADSIDE SERVICE" and lists its hours as Monday to Sunday, 24 hours.

Mario has "over 20 years experience in road service field" and is a certified state inspector for the State of Texas for state inspections, which means he knows what a DOT check looks for before you get pulled over for it. The service area is described as serving "all of South Texas," though no specific radius is stated.

Google rates it 4.9 stars from 155 reviews.

This is a good fit for a traveler whose RV chassis quits somewhere in South Texas, or an owner parked for a while who needs brake, jack or hydraulic work done without towing the rig anywhere.

Based inEdinburg, TexasMobile: comes to the RV
Service area“Mario Pena Jr is ready to serve all of South Texas”smdieselroadservices.com
Trip fee and hourly rateNot published. Ask on the phone what the trip fee is and whether it includes the first hour.
HoursMonday to Sunday 24 Hourssmdieselroadservices.com; takes after-hours and emergency calls
Works onGeneratorsSlide-outs and levelingElectrical, inverters and convertersPlumbing and water systemsChassis, brakes and tiresListed at smdieselroadservices.com. This is what they list, not a limit; ask about anything else.
CertificationsNone named
Listed as“brakes; leveling jacks; hydraulic issues; diesel engine; water pumps; oil pan gasket; injector replacement; fuel pump replacement; oil pump replacement; belts; tensioners; radiator replacement; alternator; starter; shocks; wheel seals; brake adjustment; heating; ABS system; electrical; fuel system; computer diagnostics; welding and fabrications; trailer repairs; driveline; exhaust; suspension; ste”
Time in business“over 20 years experience in road service field”
Google rating4.9 of 5, 155 reviewsGoogle Maps listing, read October 8, 2026

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