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    KnuckleHead Diesel Performance

    4.0 (7 reviews)
    Closed 8:00 am - 5:00 pm

    Services - KnuckleHead Diesel Performance

    Auto transmission repair

    Routine automotive maintenance

    Transmission leak inspection

    Commercial truck repair

    KnuckleHead Diesel Performance Photos

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    Recommended Reviews - KnuckleHead Diesel Performance

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    County Transmissions

    County Transmissions

    (104 reviews)

    Overall: 15/10 An honest and professional shop that has…read moreearned my lifelong business. Service: 10/10 My primary contact was Mike, however I spoke with many other staff in person and over the phone over the course of a week after I had my Crosstrek towed in with a destroyed transmission system. Everyone was courteous, helpful, and responsive. The new transmission they procured was practically brand new and installed professionally. The experience they provided me as a customer was as excellent as the final bill and they are now my go-to shop for transmission and suspension work. Thus, I strongly recommend this business. When I had my car towed in, it was after hours, but conveniently they had an overnight key/car drop off system that was secure and easy. The lobby was clean, organized, and offered free cold water.

    Had my vehicle being serviced at local mechanic and they notified me that the PTU (Power Transfer…read moreUnit) that is part of transmission on all-wheel drive vehicles was leaking badly and needed to be replaced. They did not work on transmissions and advised me to take it to a transmission repair shop. Called the Ford dealership and they told me to replace it would run around $3300. For comparison I called some transmission shops and got ahold of County Transmissions and spoke with Hampton. He told me that it would run $2300 including labor if it needed to be replaced. They had good reviews so I decided to take it to them and save the $1000. Took it there on a Monday and Hampton told me they would have it done in several days. By Friday had not heard from anyone so I called them and was told that it was next in line to be looked at which would be the following Monday. My vehicle had been there five days and had not been looked at. On the following Monday, Hampton called me and said that it did need to be replaced and to replace it would run $3200. This was $1000 more than $2300 as he had initially told me and about the same as what the dealership would charge. Mentioned this to him and he said that the $2300 was for a used PTU that they would get from a salvaged vehicle, and a new one was $3200. He had not told me this when I first called and I had of course assumed the initial quote of $2300 was for a new one. Didn't even know they would consider putting a used one a vehicle because how would you know it didn't have issues. In light of this new information and for the fact I feel it was a bait-and-switch, I decided to take my vehicle to the Ford dealership and have them do the repair. The dealership's warranty on the PTU was much better and I know am getting a genuine Ford part. With an independent shop am probably getting a cheap aftermarket part. If I moved to another city or say was traveling and had an issue with it, I could take my vehicle to any Ford dealership and they would honor the warranty. If County Transmissions had done the work, then I was out of luck. Had to take an Uber back to County Transmissions and pick-up my vehicle and then take it to the Ford dealership. This costs another $50 on top of the $50 Uber charge had already incurred when I took my vehicle there and had to take an Uber to get back home as I live far from them. I opened up my SmartTag GPS tracking app as had placed an Android SmartTag GPS tracking device inside the vehicle awhile back. Was very surprised to see my vehicle had been driven around Vienna and appeared they were using it to run errands as it was stopping at various locations. So in the end I was out $100 in Uber fees, they had my vehicle for a week and nothing was done after Hampton telling me they would get to it in several days, plus they apparently used it to run errands. I would certainly not recommend this company in light of everything that happened. Note: Saw that Hampton had posted a rebuttal on my initial review where he states that the initial quote was an estimate to repair the PTU, but this is not true. The PTU is something that is replaced, not repaired, and he gave me a quote of $2300 to REPLACE the PTU. Plus they didn't need to be driving it around to determine where the leak was coming from since it was obviously leaking when I took it in and it had to be replaced. When I called him on Friday he said they hadn't looked at it yet; however they had been driving it around before that Friday. He mentions that they have a shuttle service and I asked about this but was told it didn't go to where I live.

    United Mechanics

    United Mechanics

    (10 reviews)

    My car was turning heads with its screeching noises and we weren't familiar with mechanics in this…read morearea.. My brother told me we could trust Walter so took our car here. Will be our new go-to.

    United Mechanics…read more When it comes to the people, they're generally friendly. Currently, there are two mechanics who are fluent in English. However, there's some uncertainty about how long they'll stick around, given the owner's stance towards differing opinions. The shop has seen a fair bit of turnover in staff since it started. I was the seventh Service Advisor, and from what I've gathered, about twenty mechanics have come and gone. Unfortunately, the owner isn't particularly skilled at building professional relationships, mechanics, business, and doesn't seem to have much confidence in the American staff. There have been instances of dismissals, like one involving a mechanic who needed to attend to a family matter. Additionally, mechanics have been let go for minor slip-ups, like an oil cap incident, even when they promptly fixed the issue. On the flip side, some mechanics who've caused significant damage to customer vehicles have been kept on because they're more budget-friendly and speak the right language. It's important to note that everyone at United Mechanics seems to be good-hearted. However, when things don't align with the owner's thoughts, personnel changes tend to happen. The owner believes he provides top-notch service and charges $163.89 in labor while providing barely adequate service to all customers. There have been instances where staff have inadvertently caused damage to vehicles. In these cases, Service Advisors are instructed to manage customer expectations by attributing delays to unforeseen circumstances. It's worth noting that there's only one mechanic with advanced diagnostic skills, and he often gets pulled away from his work to fix the mistakes of another mechanic he struggles to communicate with. In addition to these personnel matters, there's a noteworthy issue with the equipment in the shop. There's a noticeable lack of specialized machinery, like transmission flush units, which affects their ability to carry out thorough transmission maintenance. This could potentially impact the overall quality of service. Moreover, there's a crucial shortage in a proper lift system designed for accurate wheel alignments. This shortage not only hampers the shop's ability to carry out precise alignment procedures, but it also raises concerns about the effectiveness of their services in ensuring optimal vehicle performance. Lastly, they're using subpar yellow hard plastic air lines. While they're cost-effective, they carry the risk of accidentally scratching and damaging customer vehicles during service. This falls short of the level of care and attention to detail expected in a professional automotive shop. These equipment limitations, combined with the personnel challenges, highlight potential difficulties in maintaining the highest standards of service quality and precision at United Mechanics. Addressing these issues is crucial for the long-term success and reputation of the establishment. The owner wonders why his business is slow yet consistently does not take the advice he asks for from his staff. I wish him the best of luck in building his business and hopefully he understands how to treat people and do quality work for his customers. However I would not bring my vehicles to this location for work. I tried to battle the inadequate service from the inside. And I provided the best customer service that I could in my short time at this establishment. If you need anything as far as transmission work goes I would use Superior Transmissions, Trans Tech, or Advance Transmissions.

    Dun Rite Transmission

    Dun Rite Transmission

    (1 review)

    A few months ago my transmission went out on my 2003 Acura MDX. It is known for transmission…read moreissues around 150,000 miles. Joe at Dun Rite Transmission was recommended to me by my wife, who heard about him from a friend. I was skeptical at first because I did not have prior experience with this shop. After the used transmission I personally purchased online was delivered to me and I brought it to Dun Rite, Joe notified me that the company I bought it from had given me trani with a few parts missing. And some of the parts were damaged by the shipping company. Joe removed the parts from my old transmission that were still in good condition and installed them on my newly purchased used transmission at no additional charge. My transmission was installed on time as promised. Thank you Joe for getting the job done right.

    From the owner: Dun-Rite Transmission, Inc. is your professional auto and truck transmission specialist for…read moretransmission repairs in Fredericksburg Virginia. We specialize in transmission replacements, transmission rebuilds and transmission services in the Stafford County, Spotsylvania and Fredericksburg Virginia area. Our Fredericksburg VA transmission shop is just a short drive down 95 from Dumfries and Woodbridge Virginia. Our new building includes state of the art equipment, multiple lifts and bays for quick and efficient service, and with over 22-years experience, you are certain to be happy with the work performed. Our new building includes state of the art equipment, multiple lifts and bays for quick and efficient service. At Dun-Rite Transmission we only specialize in transmissions. We don't do brakes, oil changes, or rotate tires.

    KnuckleHead Diesel Performance - autorepair - Updated May 2026

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