Another Mobile Fleet Service
“We had electrical issues with our trailer and Mel utilized his resources and he literally had us squared away in 30minutes.”
Best Truck Repair in Fontana, CA
23 mechanics listed · all 23 in Fontana · 15 open weekends · 19 rated 4.5+ · 3 show a license
Data verified October 16, 2026
Padilla Tire
“I grew up near the shop and remember they have always had the lowest prices around the area.”
Socal Truck & Tire Center
“They were knowledgeable, affordable, great communication skills ,the list of positive adjectives goes on, these guys treated my family with kindness in our time of need, and we will forever be thankful for them.”
Rhino Alignments & Diesel
“They were very upfront with the issue and what needed to be done before any work was performed.”
Rogers Exhaust Shop
“Took the broken bolts off my catalytic converter in just minutes and gave me complete new ones at a VERY reasonable price.”
Aamco Transmissions & Total Car Care
“I recommend AAMCO the service was great , my car was ready when they said it would be and everyone was very friendly 😀”
Listed for drivers in and around Fontana, CA, these 23 shops work on medium and heavy duty trucks. What each one says about fleet accounts, road service, inspections and hours comes from its own website; ratings and quotes come from public reviews.
Area overview: Fontana, CA
All 23 mechanics we list here are in Fontana itself. We have 50 mechanics in Fontana on file; this page shows the highest-rated 23. The mechanics on this page are rated from 4.2 to 4.9 across 2,066 reviews; 18 have 50 or more reviews and 19 are rated 4.5 or higher. When customers rate these mechanics on specific qualities, they most often praise professionalism (93%), quality (71%) and value (62%). 15 are open on Saturdays and 2 on Sundays. 3 show a license on their websites and 5 have a BBB rating of A or A+. Domain records put 8 websites of the mechanics on this page at ten or more years old; the oldest dates from 2005. 2 offer financing; 2 give free estimates; 5 are family- or locally-owned and 3 list coupons or special offers. 1 has Spanish-speaking staff. We have a website on file for 15 of the mechanics on this page; 12 publish a contact page; 7 list a public email and 2 take bookings online. We count these figures across the mechanics on this page; hours and prices change, so confirm the details with the mechanic before you visit.
Which truck shops listed for Fontana work on Saturdays or Sundays?
15 of the 23 shops on this page run a weekend shift. Weekend slots are how a lot of fleets get preventive maintenance done without losing a working day, so they book out early. Parts counters keep shorter hours, which is the usual reason a Saturday job waits until Monday.
Cypress Truck Repair
“Eddie is a great guy, very knowledgeable and a great staff of mechanics.”
Diesel Injection Service
“Donovan reassured me that he and his professional and qualified staff could help me and fix my truck in a timely manner.”
JB Trailer Service
“Our truck got there at 8:30, was out by 12:00, I had a load booked by 12:30 and our driver was back on the road.”
Team GMD Truck & Trailer Repair
“Very nice people very fastfix, came for a tuneup and walked out happy.”
So Cal Mobile Fleet Services
“Really good customer service went in for an oil change and a 90 day inspection good service really happy with their work”
24 Hours Mobile Diesel Truck Mechanic
“Very helpful on my diesel truck, Worker attended me real good 100percent recommended.”
Arredondo's Auto Repair
“Dennis always has my car fixed in a timely manner and responsibly priced.”
J & S Auto Center & Smog
“The best in town I can't believe I found trustworthy cool and friendly mechanics 👍🏼 …”
Power Truck Sales
“Great choice of trucks great prices and great service I'm happy”
John's Auto Repair
“If you are looking for someone to trust with your European car seriously look no further.”
TB Diesel Inc.
“I recommend him to all Owner operators or company's looking for a good shop.”
Prime Truck and Trailer Repair
“Definitely returning for future repairs, if you have a semi check them out before going anywhere else.”
RON Caterpillar Doctor
“I had several time broken down over the road called him he was help to get me out and rebuild my w900 .”
Hendrick Diesel Solutions
“The knowledge and expertise that this guy has regarding the diesel engine is fantastic.”
G E Truck Maintenance
“Their honesty and transparency in their recommendations have earned my trust and loyalty, ensuring my continued patronage.”
Jd's Gear Works
“Beyond that, Allen has a lot of experience with transmissions and differentials which makes the repair time shorter and Allen stands behind his work so I highly recommend this shop”
P & R Fleet Services
“Very good service and very excellent customer service”
Why these companies made our list
What customers say about mechanics in Fontana
- “The staff was knowledgeable and professional, taking the time to explain the issue with my truck and the steps they would take to fix it.” — customer of Another Mobile Fleet Service
- “This is an outstanding mechanic! My trucks are cared for and treated like they're their own trucks and my drivers are treated like family!” — customer of Hendrick Diesel Solutions
- “Diesel injection has awesome customer service, perfect quality products, and the knowledge / experience to back it all.” — customer of Diesel Injection Service
- “I've had everything from brakes, alignments, differential replacement, to engine rebuild done on my fleet and it's been quality every time.” — customer of Prime Truck and Trailer Repair
- “The receptionist, Natasha is very friendly and always updates us on the status of our trucks.” — customer of So Cal Mobile Fleet Services
Excerpts from public reviews of the mechanics listed on this page.
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