Highly recommend. He got to me ASAP when I really needed help and didn’t cut any corners. He put in a full 8-hour job to make sure everything was done right, and because of that I was back on the road the very next day. Super reliable, hardworking, and knows exactly what he’s doing. If you want the job done fast and done right, this is the guy to call.
Top-notch service. He came when he said he would, I was down for no more than an hour.
Fix the problem right away.
I would use them anytime when I'm in the New York area. But I happened to be in connecticut, when he came great guy
Johnathan has great communication, Very knowledgeable and honest Diesel tech with fair pricing. Fixed few things in my truck in my semi-truck. Looking forward to do more business with him.
Highly recommended. Jonathan Velasquez revived my 50-year-old Volvo MD7A, correcting another mechanic's faulty fuel-injection pump, fixing issues with the fuel lift pump and water pump, and coming up with a creative and economical solution for coaxing the engine to start even though Volvo has stopped making the parts needed to restore full compression. Yes, the boat needs a new engine. When the time comes, I'll ask JV Dieseltech to do it.
Jonathan cleaned my marine diesel tank on City Island and did a fantastic job. He was professional, sent me pictures while he was working, and understands marine diesel needs. Great overall service and very nice person to do business with.
Great timely on-water service and fair pricing for cracked exhaust and replacement of lift fuel pump on my small sailboat auxiliary diesel. I highly recommend Jonathan and JV DieselTech.
I consider Jonathan my personal professional savior. I was stuck in a BJ’s parking lot, with a vehicle full of groceries, and could not wait to be towed to some mechanic who was not gonna fix my vehicle until Monday…did I mention I was stuck in White Plains and live in the Bronx? He came, he diagnosed and fixed my issue and had me back on the road in under 1.5 hours. I highly recommend Jonathan, he is professional, Quick reliable, courteous and bilingual. He is also amazing with Diesel trucks!
Absolutely Outstanding Service!
Jonathan is hands-down the best mobile mechanic I’ve ever worked with. He’s professional, punctual, and incredibly knowledgeable. He comes right to my location, diagnose the issues quickly, and have our fleet back up running in no time— all at a very fair price.
What really stood out was his honesty and attention to detail. He took the time to explain everything in a way I could understand and didn’t try to upsell me on things I didn’t need. You can tell he genuinely cares about his customers and takes pride in his work.
Highly recommend Jonathan to anyone needing reliable and trustworthy auto repairs. 5 stars all the way!
We broke down and had to call for help. We called JV Diesel Tech LLC. The owner-Jonathan was Amazing! He was professional, knowledgeable, and very conscientious about his work. He was fair and honest; that goes a long way with us. He was a joy to talk to and very friendly. We are in the trucking business based out of NC and travel constantly. However, because our experience with JV Diesel Tech LLC-Jonathan-Owner, we will make it a point to schedule a load coming his way when repairs are needed. It is hard to find a good Diesel/fair Mechanic, so when you find one, you might want to hang on to him. We didn't have to wait long and was back on the road pretty quickly. Which is of the upmost importance in the trucking business. Therefore, our company wholeheartedly recommends JV Diesel Tech LLC.
Thank you JV Diesel Tech LLC/Jonathan-Owner.
Patricia Harris, RHIT
P Brown & Daughters LLC
Jonathon was very easy to work with, was onsite within a few hours after we called, and he fixed our air brakes so we could get our bucket truck back on the road right away. Reasonably priced. We were in a jam and everything worked out quickly. Thumbs up
My experience with JV. Diesel.Tech was very positive. Jonathon was respectful, polite, and attentive to my needs. He systematically and logically addressed the problem with my boat’s engine. It was a joyous sound to hear the engine running again. I strongly recommend him.
An outstanding mechanic, Jonathan quickly resolved multiple issues we were facing with the tires, turn signal lights, and brake lights. He arrived within just 15 minutes and had everything fixed on the spot. The service was not only efficient but also very reasonably priced. Truly impressive work.
Top-notch mobile mechanic in Harrison!
I was having transmission problems with my Mercedes-Benz and didn’t want to risk driving it to a shop. I called Jonathan, and I’m so glad I did. He came right to my location in Harrison, showed up on time, and got straight to work.
Jonathan diagnosed the issue quickly and explained everything clearly. He’s super professional, knowledgeable, and honest—which is hard to find these days. He had all the tools and experience needed to work on a high-end car like a Mercedes, and I was really impressed.
If you’re in the Harrison area and need a reliable mobile mechanic, especially for European vehicles, I highly recommend Jonathan. Great service, fair pricing, and total peace of mind. Will definitely call him again!
One of the best mobile tech's I've ever used. Called him due to a Cascadia not starting because of an electrical issue. He was able to bypass the issue and recommended what to do but that it would be more cost effective bringing to our home shop. Very honest guy who showed up before he said he would, communicated very well on all of the info and was very professional. I won't hesitate to use him again if we ever need help in the area.
Great service. Jonathan came to my home in White Plains the day after I first emailed him. He spent time asking questions and running diagnostics until we had a firm plan for how to handle my transmission and exhaust issues. So much better than dropping the vehicle at a garage, Ubering home then waiting a day, Ubering back to the garage only to be hammered with a massive bill. Highly recommend.
The comunication with JV Road Services was excellent. They've arrived on time and they were able solve the problem within my truck. Jonathan is very professional and honest. I highly recommend JV Road Services and God bless you all.
Jonathan gave great service and showed up when he said he would. He communicated throughout the timeline to make sure we were back running and on the road. He is honest and gave a fair price. Highly recommend JV Diesel Tech LLC services
I used JV to repair my snowblower. I literally was able to schedule him the same day. He was professional, responsive and fair. He arrived to my house and had my unit working within 30 minutes. Super convenient. Definitely will use him again and recommend him to friends/family.
Jonathan stopped by my office yesterday and left a business card. Just so happens I had a truck break down in Stamford CT today. I called Jonathan and he was there in 30mins and had my truck rolling within an hour. High recommend!!!
Great service! Came out after hours to fix my starter. It was 26 degrees outside and me and my dog was freezing he is the only professional I met that day. If you need a honest Mechanic you found him. I do a lot of reviews and it’s hard to get a 5 star from me.
Great service,got to me super fast. Was able to get back on the road in no time. He was proficient and quickly repaired the problem. Will definitely continue to use his services from here on out.
Was a pleasure doing business with Johnathan has great communication and fastest service and is the best in the industry just give him a call and your in the best hands
I could not be more thankful for JV DieselTech. Extremely knowledgeable, fair pricing and all around great service. We will continue to use them for all our trucking needs, look no further for reliable and speedy service. Highly recommended!
Used Jonathan 2 times in a 10 day period once for my diesel food truck where he repaired my starter and my headlights and also last night for my personal vehicle. Both times he was honest, fair priced and very knowledgeable. I will definitely use Jonathan in the future and will recommend to anyone.
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