Performance Wise

I called to see if they might be able to help me with my stuck hood latch on my sprinter van. They got me in and helped me right away! They were so kind and gracious getting my latch and hood in working order. They were friendly and supportive which I know isn't always the case with mechanics. I cannot recommend them enough!!!!

I came to them with an oil leak and they did not skimp on trying to figure out where it came from. I purchased my diesel van in seemingly great condition. However, after driving it for more than an hour, noticed a huge pool of oil leaking under the bottom. The guys at the shop went out of their way to find every possible spot that it could be leaking from, and even went as far as taking it to a transmission shop down the street to have them inspect it.

I think I had about 3-4 different inspections done because the leak just would not stop, and both them and the transmission specialist never charged me a dime. I felt like I left my van in good hands.

Small side point- this place was recommended to me by a friends dad; he, and every one of his coworkers that have a diesel truck, take their truck to Performance Wise.

This repair shop is top notch. They do what they say and repairs are always completed in a timely manner. I would and have recommended this business to all of my friends. Great Job!

These guys are absolute diesel experts. Originally found PerformanceWise after I bought an '07 diesel truck and needed an emissions test. Was able to make an appointment same day, the test was fast and I was very impressed with their customer service. Fast forward to the truck having problems. Went to another place first and it was diagnosed wrong with costly repairs that didn't fix the problem. Then took it to PerformanceWise and they immediately knew the cause, Mechanic Isaac was beyond knowledgeable about all the ins and outs of my specific diesel engine ('07 6.0L Powerstroke) and spent time explaining the diagnosis, gave me HONEST opinions and in the end saved me a ton of money without any financial gain on their side. This is when you know you can truly trust a shop. If you are looking for a place to take your diesel that you know you can trust and that they know their stuff, these are your guys. Incredible customer service. Thank you, Isaac!

Very trusted shop to go to and get your repairs done every time I’ve been in there. They’ve been honest, trustworthy and get the job done in a good time frame. I highly recommend performance wise to all my friends.

These guys are great - I usually do my own maintenance on a 97 OBS PSD, but when there is something thats beyond me, I bring it to Performance Wise and they find the problem and have the experience to fix it. Highly recommended!

Great group of guys and great communication. I have had my truck into them twice now. They came highly recommended and they did not disappoint. I drive from Thornton to Wheat Ridge so that they can work on my truck. I pass several other shops but I TRUST theses guys! Thank you!

Good work on my F250, couldn't figure it out and they did a solid repair. 150 miles in and no repeat issues. Friendly service, even keep track of your phone # and update you, and answer their phone! Not the cheapest in town, but for a good reason, again, good work guys! Thank you!

The crew here has helped me with one of my oldest and favorite trucks in my fleet, a 2001 24 valve 2500, for years. We are currently running it hard with a plow.
Thanks Performance Wise!
Pete Thrive Landscape and Design

Stopped in for an emission test with no appointment. They had me in and out very quickly. Very helpful I'll definitely come back when I need service.

These guys are great. I’ve been taking my truck there for the last 6 years or so and have no complaints. From maintenance and emissions to replacing a turbo on my 350, they have always been good to me. I definitely recommend.

Ive had nothing other than a positive experience with Performance Wise service . My 2000 F250 has over 300 thousand miles on it , granted the 7.3 engine was one of the best, the service that has been recommended by Nick and the maintenance records that they have kept over the years have added to the miles I've accumulated .

Got a diesel emissions done in less than a half hour. After trying places close to my location and not getting an appointment for over 2-3weeks found this place and it was worth the drive and got it done in no time. Comfortable waiting area and very nicely treated. Highly recommend for all your diesel needs.

Prompt service, friendly techs, they got out truck up and running within two days of having it towed there. They might just be our new go-to spot for our truck fleet. Thanks guys!

I have used Performance wise for many years. Nick is excellent to work with. Keeps me informed on any and all matters that need to be addressed. Easy to get appointment great follow through and always prompt
I recommend them highly.

Hands down, this is the best shop I’ve used for my trucks in many years and many states. They are communicative, prompt and respectful. They stand behind their work and take the time to help me understand the results of the diagnostics and all viable solutions. I highly recommend these guys!

This is the second time I’ve brought a 6.0 ford in to Performance Wise that wouldn’t run and within the week, it was back up and running just as it should. I would recommend these guys to anyone that doesn’t want to spend an arm and a leg at other shops. These guys are the best

Performance Diesel is awesome. We are on our 3rd Diesel, and they have serviced all three, including some fairly unique issues. From emission tests, to basic service, this group is knowledgeable and we completely trust them with our trucks. Chris and Nick are the best! They treat me with respect and explain repairs and issues to me when I come in without my husband, without making me feel stupid. I’m a bit intimidated backing our truck up in their parking lot. They are always there to help. We’ve had some very strange issues with our trucks, and Performance Diesel can always figure it out and get us back up and running. This is a well-run business. We are completely satisfied. Thank you Perfomance Diesel.

The performance wise diesel crew is top notch and have gone above and beyond to always make sure my truck is in tip top shape. Nick is a stellar guy to work. Mechanics are very knowledgeable and know what there doin. If you have a diesel truck and need repairs and your not taking it there your crazy! Always a great experience at PERFORMANCE WISE DIESEL!!

I have been taking my company trucks here for the past year. Their pricing is always fair and their work is great. They are always very upfront about the issues, what they recommend and what the cost will be.