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BBB Accredited Business since

U S Automotive Machine & Performance

Phone: (970) 669-3290 Fax: (970) 669-0467 827 S Lincoln Ave, Loveland, CO 80537

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BBB Accreditation

A BBB Accredited Business since

BBB has determined that U S Automotive Machine & Performance meets BBB accreditation standards, which include a commitment to make a good faith effort to resolve any consumer complaints. BBB Accredited Businesses pay a fee for accreditation review/monitoring and for support of BBB services to the public.

BBB accreditation does not mean that the business' products or services have been evaluated or endorsed by BBB, or that BBB has made a determination as to the business' product quality or competency in performing services.

Reason for Rating

BBB rating is based on 13 factors. Get the details about the factors considered.

Factors that raised the rating for U S Automotive Machine & Performance include:

  • Length of time business has been operating
  • Complaint volume filed with BBB for business of this size
  • Response to 2 complaint(s) filed against business
  • Resolution of complaint(s) filed against business

Customer Complaints Summary Read complaint details

2 complaints closed with BBB in last 3 years | 0 closed in last 12 months
Complaint Type Total Closed Complaints
Advertising/Sales Issues 0
Billing/Collection Issues 0
Delivery Issues 0
Guarantee/Warranty Issues 0
Problems with Product/Service 2
Total Closed Complaints 2

Customer Reviews Summary Read customer reviews

0 Customer Reviews on U S Automotive Machine & Performance
Customer Experience Total Customer Reviews
Positive Experience 0
Neutral Experience 0
Negative Experience 0
Total Customer Reviews 0

Additional Information

BBB file opened: October 17, 2008 Business started: 01/01/1988 Business incorporated 01/01/1994 in CO
Licensing, Bonding or Registration

This business is in an industry that may require professional licensing, bonding or registration. BBB encourages you to check with the appropriate agency to be certain any requirements are currently being met.

These agencies may include:

Occupational/Industry License Database Colorado
1560 Broadway Ste 1350, Denver CO 80202

Type of Entity

Limited Liability Company (LLC)

Business Management
Mr. Tom Williams, Owner Mr. Jeff VanHorn, Co-owner Ms. Ranae Williams, Co-Owner
Contact Information
Principal: Mr. Tom Williams, Owner
Business Category

Auto Repair Auto Repairing - Foreign Brake Service Engine Repair Rebuilding Companies Mufflers & Exhaust Systems Auto Perform, Race & Sport Equipment Tire Dealers Auto Air Conditioning Auto Diagnostic Service Auto Electric Service Auto Machine Shops

Alternate Business Names
U S Automotive Machine & Performance LLC
Industry Tips
Auto Repair & Service

Additional Locations

  • 827 S Lincoln Ave

    Loveland, CO 80537 (970) 669-3290


BBB Customer Review Rating plus BBB Rating Overview

BBB Customer Reviews Rating represents the customers opinions of the business. The Customer Review Rating is based on the number of positive, neutral and negative customer reviews posted that are calculated to produce a score.

Customer Review Experience Value
Positive Review 5 points per review
Neutral Review 3 points per review
Negative Review 1 point per review

BBB letter grades represent the BBB's opinion of the business. The BBB grade is based on BBB file information about the business. In some cases, a business' grade may be lowered if the BBB does not have sufficient information about the business despite BBB requests for that information from the business.

BBB Letter Grade Scale

BBB Rating Value
A+ 5
A 4.66
A- 4.33
B+ 4
B 3.66
B- 3.33
C+ 3
C 2.66
C- 2.33
D+ 2
D 1.66
D- 1.33
F 1
NR -----
Star Rating scale

  Average Score
5 stars 5.00
4.5 stars 4.50-4.99
4 stars 4.00-4.49
3.5 stars 3.50-3.99
3 stars 3.00-3.49
2.5 stars 2.50-2.99
2 stars 2.00-2.49
1.5 stars 1.50-1.99
1 star 0-1.49

BBB Customer Review Rating plus BBB Rating is not a guarantee of a business' reliability or performance, and BBB recommends that consumers consider a business' BBB Rating and Customer Review Rating in addition to all other available information about the business. If the BBB Rating is NR then only Customer Reviews are used for the Star Rating.

Complaint Detail(s)

10/17/2014 Problems with Product/Service | Read Complaint Details

Additional Notes

Complaint: US Automotive and Performance performed machine work on my ****** engine. The cylinder heads were improperly machined and the EGR passages were not cleaned. After assembling and installing the engine it would not start. After about 20 hours of troubleshooting, I removed the engine and did a cylinder leak down test. The cylinders leaked 50 to 95%. I removed the cylinder heads and noticed abrasive carbon particles embedded in the cylinder walls. The only source is from the heads. US Automotive and Performance had me bring back the entire engine. I waited almost 3 weeks for them to even look at it. On my next trip there, they acknowledged they did not machine the heads right and would redo them and make sure to get the carbon out this time. They did not remove the carbon from the cylinder walls. **** said he just wiped the cylinders with a rag. They provided a few of the gaskets needed and replaced the head stud they bent while the shortblock was there. I had to remove the carbon from the cylinders. I assembled the engine and performed another leakdown test. The leakage was 20 to 30% which is acceptable for a new engine. After installing the engine again, it started right up.

Desired Settlement: I have spent around 60 hours of labor troubleshooting, removing, rebuilding, and reinstalling this engine. Having me bring them the shortblock was a waste of my time. And I had to spend additional money on new fluids and trips back to the machine shop, use vacation days, costs for heat now that it is winter, ect. A refund of the entire purchase from US Automotive and Performance would approximately compensate me for the time and money I have lost due to their faulty machine work and poor customer service.

Business Response:    
    In response to Mark's complaint, he is stating that we did not do the machine work correctly.        At no time did we say that we did not do our work right for him.  His complaint is concerning abrasives and that they were not removed.      His heads were cleaned with a high pressure washer.     After we do a valve job, we always do a leak down to make sure that the valves seal, as was in this case.      The first time the customer did not bring the complete engine in, just the heads and block.    When he did have a problem we asked him to come in and we would check it out.     When the customer brought it in to be checked out he brought
the EGR and manifold ( which were not part of the 1st job).      We found some abrasions in both the EGR and manifold, which apparently got in the engine the first time.      We offered to clean them.     After cleaning the block and heads we retested with another leak down and it all tested fine.    The only way to clean the block after machining is done is to wipe with a clean cloth (rag).       The bent bolt was possible due to droppings or something else, by the customer or us, and we did replace it.     The time frame was longer than normal because the customer was having surgery done and we were busy also.    All gaskets were not
replaced because some were reusable.    We are sorry for any inconvenience he has had, but when a customer assembles the engine themselves, to save money, they assume all responsibility, and you can check with any shop around.     The car has been running for almost a year and we have not heard anything further from him since the last time he was in, so we assumed that things were fine, so we have no way of knowing what may or may not have happened.    Under these circumstances we feel we don't owe him anything.

Thank you,   *** ********

Consumer Response: Complaint: ********

I am rejecting this response because:

The statements from *** ******** are FALSE.

I brought the heads in back in because they did not seal. I proved this with compression tests, cylinder leak-down test, and the port solvent test. The heads were from a running engine and the valves used to seal. After they "machined" them, they leaked so bad the engine would not run. I have 3 forms of proof and a witness. I would not have brought the heads back in just because carbon was left in the egr passages. I would have never known it. The only reason I knew it is because I had to disassemble the engine to fix the leaking valves.

When I brought the heads back in and showed ****, he said they would go through them competently and make sure they were right. This was witnessed by automotive machinist I brought with me.

I don't care if they say they did a leak down test. They leaked, period. The valves used to seal on these heads, from a running engine, when I got them back they leaked so bad it would not start.

I brought the EGR and manifold because they asked me because they were looking for something to blame the carbon on. Every machinist knows one must remove the carbon from egr passages in the head or they will pass through the engine when it's started.

They did NOT find abrasives in the intake manifold that apparently got in there the first time. Everybody knows that carbon particles come from the egr passages.

"After cleaning the block and heads"? they did not clean the block the second time I brought it in. **** stated he just wiped them out with a rag. That does not clean out embedded carbon particles in to the  crosshatch of the cylinder walls. I had to do that. It was very difficult to remove and maintain the crosshatch.

I don't know where they dreamed up I had surgery. I did not. That is completely fabricated.

After I brought the parts back in, and a week had passed, I called them, with my lawyer. **** stated he might get around to looking at the parts the end of next week. This statement was witnessed by my lawyer.

The statement I assembled it myself to save money is false. I do it because I enjoy it. It is enjoyable with a competent machine shop that does quality work.

I HAVE asked around and automotive machine shops are still are responsible for doing accurate, quality work. I anyone brings in heads that used to seal and they botch the job so bad they leak to the point the engine won't start, they are responsible. The customer assembling their own engine is not an excuse to get away with poor quality work.

I did not respond until now because I just now have 2000 miles on this engine and just now feel the rings are sealing.

FAILURE 1- Botched the valve job so bad the heads would not hold compression. 50 to 95% leakage in the valves.

FAILURE 2- Not cleaning or ensuring the EGR passages were clean. Carbon passed into my new engine while trying to start it.

FAILURE 3- Poor customer service consisting of delays, making excuses, and trying to put the blame elsewhere. No effort made to properly clean the cylinder walls from carbon they left in the heads.

FAILURE 4- Fabricating their BBB response full of mis-truths and erroneous information.

I will gladly bring witnesses, an automotive machinist expert, and my lawyer into this to reach resolution.


**** *******

Business Response:      Regardless of whether the customer assembles the motor himself for enjoyment or saving of money, the facts remain as stated before where we
stand by our work and when the parts left they were clean and a leak down was done.    The heads did not leak when they left our business.    Once
again the customer assumes all responsibility when he chooses to assemble the motor, check tolerances, and cleaning before assembly.   U.S. Automotive Machine and **** *** **** are very respected and he is known for his excellent work.     **** has done countless ****** valve jobs
and there have not been any problems.     The cost of a ****** valve job is $420 and we will reimburse him that amount.    Thank You

Consumer Response: Better Business Bureau:

I have reviewed the response made by the business, and find that this resolution is satisfactory to me.

I want to thank US Automotive and Performance for re-doing the valve job on my ****** heads. It passed a leak-down test this time and the engine started right up and is still running.

I will consider this issue closed once I receive reimbursement.


**** *******

5/27/2014 Problems with Product/Service | Complaint Details Unavailable

Customer Review(s)

The customer review(s) below are un-filtered. These positive and negative reviews are not used in the calculation of the BBB Rating. If you wish to file a complaint and request a resolution to your issue please click here. This customer review section is not BBBs complaint resolution system. Customer Reviews are the subjective opinion of the individual who posted the review and not of Better Business Bureau. A customer review is not posted on a business if a BBB complaint on the same issue(s) is also filed. BBB cannot guarantee the accuracy of any customer review and is not responsible for the content of any customer review. Public comments are not customer reviews.

Customer Reviews Summary

0 Customer Reviews on U S Automotive Machine & Performance
Positive Experience (0 reviews)
Neutral Experience (0 reviews)
Negative Experience (0 reviews)