These guys WILL take care of you in a timely manner and at an UNBEATABLE price. Got my turbos replaced and exhaust work done. And had a few things replaced for free. AMAZING service. And honest people

This place is THE place I would recommend to anyone in the Dubuque area. Prices are very reasonable, and most of all, this shop knows what to do and how to do it right! A very respectable man, Jeremy, and he is always booked 2 weeks out (if that tells you how desirable this shop is)!

Definitely the best experience Ive ever had having work done to any vehicle Ive owned. Jeremy and his guys did a great job on the upgrades to my diesel truck and went way above and beyond to help me out. I highly recommend them for anyone wanting work done!

Always the first place I go to for all my automotive needs great group of people employed there very knowledgeable with all my cars, always have a good time visiting with all the people working at Js Performance

Excellent work that doesnt break the bank. Would recommend them to anyone that needs work done on their vehicle!

Only place I will take my vehicles. Customer service is top of the line. Its hard to find a good mechanic, but these guys are the best!

Extremely professional!! I needed wheels and tires then snowballed into bumpers, air filters, fuel filters, train horns and airlift auto compressor. Js performance headed by Jeremy did everything I asked!! And when I provided an incomplete bumper they were extremely quick to recover the missing parts and complete the project on time!! After my inspections at home of all their hard work and pride, I am very impressed by the good job they have done!! Well done guys!!

Great group of guys to work with. I have had repairs done, upgrades to my truck, even bought a truck from them. Awesome experience every time.

Great place friendly staff

Excellent and honest work. I would recommend anyone.

These guys know their stuff. Very kind staff.

Best prices and some of the most experienced mechanics Ive ever meet! Very trusting!

5 stars. Had to get some used tires put on my truck, they were put on for a super fair price, I scheduled an appointment for Friday, Saturday morning I woke up with a flat tire.. I called the shop and despite them being very busy they told me to bring in my truck so they could look at the tire, Apparently there was a pre-existing hole in the tire. They patched it and was free of charge. I highly recommend them, I will definitely be going back, for certain mechanical things I can’t or do not want to do. I’m glad I found an honest, guarantees their work type of mechanic shop.

Above and beyond expected service. Simple oil and filter change on my 2500 turned into a full check up with satisfaction in mind. Timely turn around with a warm truck waiting on a cold day. Will return with a smile! Thanks guys!

Had modified exhausts installed on multiple occasions. Great prices, amazing work, friendly staff.

A great group of guys that know what they are doing. If you have any problems with your car this is the place to go. And they are not out to take every dime you own.

What stands out to me when I reflect on the service I was provided at J’s Performance off of Cedar Cross Road in Dubuque:- Knowledgeable employees who will make recommendations based on what will provide the best performance out of your vehicle, not what is simply the most expensive.- Highly-trained and efficient staff members who will get the job done correctly the first time and will have you blown away by how your vehicle looks and runs after work is completed.- The guys here will maximize the money you are willing to spend. You can walk in with a basic vehicle and leave with one of the sharpest cars/trucks in the city and you do not have to withdraw from your life savings to do so.- The crew here gets the job done quickly and is true to the price they quote you at before they service your vehicle. There are no surprises, and the guys will not lag around and rack up hundreds of dollars in “labor costs” for work that professionals should be able to get done in a reasonable time.*** Not to dog other performance shops but if you want to elevate your car or truck you don’t need to go online or out of state to do so. I highly recommended J’s Performance and I hope that anyone in the Tri-State area who is looking to do some work on their vehicle sees this review and stops by their shop on Cedar Cross Road to see the endless lift kits, exhaust, lights, tuning, wheels, and tires that they have to offer.

Excellent customer service! Great place to do business, honest and reputable. I will be back.

Took sons newly purchased truck here to have somebodys attempted performance tuning removed and returned to factory tuning. They were ready at the appointment time and did a quick efficient job. Truck now runs great. Very good experience.

They are the best! They go above and beyond! Prices are very reasonable.

All I can say is Jaime and Jeremy have been our mechanics since we relocated to Dubuque. They are the best.

They had fixed a problem that no one could find. Love taking my autos there.

Excellent work and very timely.

Affordable, honest and quick! Quality work!

Great service, honest repairs...

Contacted Jeremy with a battery issue with my truck this morning. He said stop over and he would work me in. He scoped the battery 3 times and it failed. Prior to my arrival, he looked into what I would need in case my battery test failed. In short order a replacement was delivered, installed and up the road. Thanks Jeremy!!!!!

Work was not right, had to get their mistakes fixed at another shop and they refused to repay/ refund anything because of their poor work.

Fast friendly service !! Great price!!great place!

Great job an fair price

Good service