Complaints

This profile includes complaints for Grease Monkey International, LLC's headquarters and its corporate-owned locations. To view all corporate locations, see Find Local Branches.

close

Find a Location

Grease Monkey International, LLC has 28 locations, listed below.

*This company may be headquartered in or have additional locations in another country. Please click on the country abbreviation in the search box below to change to a different country location.

BBB accredited

Near

Country

USUnited States

Please enter a valid location.

Filter

• 

  Grease Monkey International, LLC

  5575 Dtc Pkwy Ste 100 Greenwood Village, CO 80111-3137

• 

  Grease Monkey International, LLC

  6722 S Potomac St Englewood, CO 80112-3915

• 

  Grease Monkey -Firestone

  6140 Firestone Blvd Firestone, CO 80504-6425

• 

  Grease Monkey

  11988 W Jewell Ave Lakewood, CO 80228-4402

• 

  Grease Monkey

  1230 Ken Pratt Blvd Longmont, CO 80501-6333

The complaint text that is displayed might not represent all complaints filed with BBB. Some consumers may elect to not publish the details of their complaints, some complaints may not meet BBB's standards for publication, or BBB may display a portion of complaints when a high volume is received for a particular business.

• Initial Complaint

  Date:07/09/2025

  Type:Service or Repair Issues
  Status:

  AnsweredMore info

  Complaint statuses

  Resolved:

  The complainant verified the issue was resolved to their satisfaction.

  Unresolved:

  The business responded to the dispute but failed to make a good faith effort to resolve it.

  Answered:

  The business addressed the issues within the complaint, but the consumer either a) did not accept the response, OR b) did not notify BBB as to their satisfaction.

  Unanswered:

  The business failed to respond to the dispute.

  Unpursuable:

  BBB is unable to locate the business.

  Leading up to a cross-country move, I brought my 2000 Mercury Mountaineer to this Grease Monkey for multiple oil changes and was later advised to spend approximately $1,770 on brake lines, brakes, and a radiator to ensure the vehicle was safe for long-distance travel. I approved the repairs based on their recommendation.The day before I left for my move, I brought my vehicle back again and was told the only service needed was an $80 headlight restoration. I was assured my vehicle was safe and road-ready.3 days later, I had my vehicle inspected by Midas in **********, **, after I began having problems. What they found was shocking: my driver-side rear leaf spring shackle was almost completely rusted through, to the point of near failure. This is a major structural component that any mechanic working underneath the vehicle especially one who had been under it repeatedly should have immediately noticed.Additionally, ***** provided a full inspection report and estimate for nearly $3,000 in urgent repairs, including control arm work, ball joints, sway bars, shock absorbers, and complete replacement of the rusted shackles. These issues were all visible and posed a significant risk to both my safety and my vehicle.Because of this negligence, I am now forced to purchase a new vehicle mid-move and have already spent nearly $2,000 on repairs that failed to address the actual dangers. Grease Monkey had multiple opportunities to advise me of the unsafe condition of my vehicle and failed to do so instead, they recommended cosmetic services and parts sales.Requested Resolution:A full refund, A formal investigation into the inspection practices at the **********, ************** location, Confirmation that staff are trained to identify and report serious safety issues not just upsell parts This experience was deeply upsetting and could have ended very badly. I am submitting this complaint so others are not misled into thinking their vehicles are safe when they are not.

  Business Response

  Date: 07/11/2025

  This vehicle came into the shop over heating because the radiator was leaking. Also, the rear wheel seals were leaking all over the brakes and passenger rear wheel because the bearings needed replaced. Our Technician and the assistant manager recommended a new vehicle. She insisted this vehicle had too much sentimental value to get rid of. They tried to explain to her this was not economical and only the start to repairing all the vehicle issues.  We told her about the leaf spring shackles and several other issues. We told her this was a safety concern.
  The work we performed was needed and is not part of the additional recommendations from Midas. We don't feel a refund is warranted.

  Customer Answer

  Date: 07/14/2025

   
  Complaint: 23574392
  
  I am rejecting this response because:

  Thank you for your response. However, I must respectfully dispute the claim that I was informed my vehicle was unsafe to drive due to the condition of the leaf spring shackles. This is categorically false.
  
  At no point during my multiple visits to the Grease Monkey location at **************************************************************************, was I told anything about the leaf springs or any structural issue that would have rendered the vehicle unsafe. I received only two estimates from your shop:
  
  One for new brake pads, brake lines, and a radiator replacement (~$1,750)
  A follow-up for an $80 headlight restoration, which was recommended the day before I left for a cross-country move
  
  
  After the breaks ans radiator repairs were completed, I returned to pick up the car with my uncle and at no point during that interaction was he informed of any safety concerns either. If your technicians were aware the vehicle was unsafe, this was the clear and appropriate time to say so. No such warning was provided verbally or in writing.
  
  
  Less than a week later, during my move, I had the vehicle inspected at ***** in ****, where I was told that the driver-side rear leaf spring shackle was nearly rusted through, and that the vehicle was not safe to continue driving. They provided a full inspection report, estimate, and photos all of which confirm the severity of the issue. This condition should have been readily visible to your technicians, especially given that they had recently been working underneath the car to perform brake and radiator repairs.
  
  
  If your shop truly believed the vehicle was unsafe, I would have expected:
  
  
  A clear verbal statement at the time of pickup
  A notation on the estimate or invoice
  Documentation for my records

  
  
  None of that occurred.
  
  
  Instead, I was led to believe my vehicle was roadworthy and safe to drive and I relied on that judgment to begin a major move across the country. As a result, I am now forced to purchase a new vehicle unexpectedly and am out nearly $2,000 on repairs that addressed the wrong issues.
  
  
  I am requesting a full refund of the recent repair charges as a good-faith resolution to this matter.
  
  
  
  Sincerely,
  
  ****** ******

• Initial Complaint

  Date:07/02/2025

  Type:Service or Repair Issues
  Status:

  AnsweredMore info

  Complaint statuses

  Resolved:

  The complainant verified the issue was resolved to their satisfaction.

  Unresolved:

  The business responded to the dispute but failed to make a good faith effort to resolve it.

  Answered:

  The business addressed the issues within the complaint, but the consumer either a) did not accept the response, OR b) did not notify BBB as to their satisfaction.

  Unanswered:

  The business failed to respond to the dispute.

  Unpursuable:

  BBB is unable to locate the business.

  I had my car in for an oil change, tire rotation, radiator service on 6/24. I drove it for the first time on the highway and it began to shake violently because the lugs weren't torqued and the engine splash shield ripped off the car while I was driving. They used the wrong viscosity oil because the throttle is so sluggish and constantly down shifting to maintain a cruising speed. I usually get around 450 miles per tank and I only got 328 miles on this tank. Also, when I went to check the air filter one of the clamps was broken off and nobody even mentioned it. I use this car for work and I need a resolution asap. ****, the manager at this location ********************************************************************************) stated it was everyone's first day, the technician was fresh out of school and he would replace the engine shield. I need the engine splash shield, air intake housing replaced and a full refund for all services. They said they were willing to do this but after multiple attempts to contact them I am still waiting to hear back from them.

  Business Response

  Date: 07/08/2025

  This incident was reported through our internal claims department for a refund as well as the replacement parts for skidplate and airbox are on order from Toyota. 

• Initial Complaint

  Date:06/15/2025

  Type:Service or Repair Issues
  Status:

  UnresolvedMore info

  Complaint statuses

  Resolved:

  The complainant verified the issue was resolved to their satisfaction.

  Unresolved:

  The business responded to the dispute but failed to make a good faith effort to resolve it.

  Answered:

  The business addressed the issues within the complaint, but the consumer either a) did not accept the response, OR b) did not notify BBB as to their satisfaction.

  Unanswered:

  The business failed to respond to the dispute.

  Unpursuable:

  BBB is unable to locate the business.

  Jihad Muhadin P.O. Box 257 ***************** | ************ To Whom It May Concern,Im filing a formal complaint regarding unprofessional and deceptive conduct at Grease Monkey Store #****, located at **************************************************************, on June 9, 2025.I visited the shop to check for an oil leak. I told the mechanic I didnt want oil added if a leak was present. He assured me there was no leak, so I authorized the oil service. Instead of processing the payment properly, the mechanic accepted a Cash App payment and did not provide a legitimate receipt.On June 10, a mobile mechanic inspected my car and immediately found an existing oil leak, contradicting the Grease Monkey technicians assessment. I returned to the shop for accountability, but the mechanic denied performing the work. He then created a fake receipt using a false name and address I had previously given him without verifying ID or legitimacy paid for the services on the receipt with his own personal debit/credit card, forged my name thereto, and brought it outside to me... clearly an attempt to cover his tracks.This experience was unethical and unprofessional:Accepting off-the-record payments Falsifying documentation Misrepresenting vehicle conditions Attempting to fabricate a paper trail These actions reflect serious misconduct by the employee and damage the credibility of Grease Monkey as a company.I respectfully request:1. Immediate investigation into Store #****'s staff conduct 2. Review of surveillance and transaction records for June 910 3. Disciplinary action if wrongdoing is confirmed 4. Assurance that policies prevent unauthorized payments and false documentation 5. Reimbursement for any resulting damage or correction caused by their negligence I hope this complaint is handled promptly and professionally. I am available to provide additional documentation or details upon request.Sincerely,Jihad Muhadin

  Business Response

  Date: 06/15/2025

  The only services performed on the vehicle was an oil change and Oil System cleaning.       The vehicle was past due for the oil change.   The source of the oil leak could not be determined.   Further work would be necessary to ascertain the source of the oil leak.       The leak was present prior to the vehicle being  serviced by the shop and was not caused by the shop. 

  The associate that took an incorrect payment was terminated the very next day.    Multiple attempts to contact this guest happened by various members of management as well as our Loss Prevention Dept.    Voice mails were left and never returned.     

     We did not cause his leak and are in no way responsible for any oil leak repairs.  

   

  Customer Answer

  Date: 06/16/2025

  To Whom It May Concern,

  
  

  I am writing in direct response to the statement submitted by Grease Monkey regarding my original complaint about the condition and service of my 2019 ********** Tiguan at their ************ location (Store #****).

  
  

  Grease Monkeys response is not only misleading but crafted to absolve themselves of clear responsibility regarding both the service rendered and the misconduct of their employee. Here are the facts:

  
  

  1. False Claim of Pre-Existing Leak:

  The vehicle showed no signs of an oil leak prior to being serviced at Grease Monkey. My vehicle was parked in a private driveway with clean concreteno oil stains or spots were ever present until immediately after this service. Within 24 hours of leaving their shop, I discovered a significant oil leak in the same area where service was performed. I documented the leak with photographs and video evidence, which contradicts their claim that the leak was pre-existing. If the leak had existed prior, it would have been noticed by myself or anyone else who regularly parked in that location.

  
  

  2. Failure to Perform a Proper Inspection:

  If the oil leak "could not be determined" at the time of service, why was I not immediately informed in writing or advised not to drive the vehicle until it was diagnosed further? Instead, the vehicle was returned to me with no mention of concern or warningsuggesting negligence or lack of thorough inspection.

  
  

  3. Employee Misconduct CashApp Payment:

  Grease Monkey admits that the associate who accepted an unauthorized CashApp payment was terminated the next day. This directly supports my claim of unprofessional and improper conduct. However, no refund or formal apology was issued to me for the violation of policy, nor was any effort made to resolve the issue until after I filed a BBB complaint.

  
  

  4. Alleged Attempted Contact:

  The business claims they made "multiple attempts" to contact me, yet I received no calls, voicemails, or emails from management or any *************************** My contact information was clearly documented on both the invoice and the CashApp payment receipt. If contact was truly attempted in good faith, I should be able to retrieve phone logs or messages to verify thatbut there were none.

  
  

  5. Denial of Responsibility:

  The fact remains: the oil leak occurred immediately after the oil change and oil system cleaning, and was not present beforehand. Grease Monkeys attempt to claim zero responsibility while also admitting an employee violated procedure only proves the lack of accountability in their operations.

  
  

  I respectfully request that this matter remain open until a fair resolution is reached. I am seeking reimbursement for the inspection and repair of the oil leak caused by the negligence of Grease Monkey staff. I am also requesting written acknowledgment of the unauthorized CashApp transaction and a public correction of the misleading statements made in their initial response.

  
  

  Sincerely,

  Jihad Muhadin

  [Your Contact Info]

  P.O. Box 257

  ************************** 

• Initial Complaint

  Date:05/21/2025

  Type:Service or Repair Issues
  Status:

  UnansweredMore info

  Complaint statuses

  Resolved:

  The complainant verified the issue was resolved to their satisfaction.

  Unresolved:

  The business responded to the dispute but failed to make a good faith effort to resolve it.

  Answered:

  The business addressed the issues within the complaint, but the consumer either a) did not accept the response, OR b) did not notify BBB as to their satisfaction.

  Unanswered:

  The business failed to respond to the dispute.

  Unpursuable:

  BBB is unable to locate the business.

  Disclaimer Statement Vehicle Damage Due to **************** at Grease Monkey On May 20, 2025, I visited Grease Monkey for a vehicle service. During the visit, I was informed that a free service was performed. However, I was not provided a receipt or documentation of the service at the time.Shortly after leaving the location, my vehicle began experiencing mechanical issues. The engine failed to function properly, prompting me to take the car to ****** ************ for a diagnostic. Upon inspection, ************************* confirmed that Grease Monkey had significantly overfilled the engine oil, which resulted in severe engine damage.Following this diagnosis, I returned to Grease Monkey, where they contacted ****** ************ directly. It was acknowledged by Grease Monkey staff that their employee had, in fact, overfilled the oil. This error caused extensive damage to the motor, which has been quoted at approximately $13,000 in repair costs.I was informed by the assistant at Grease Monkey that a claim would be submitted to address this matter. However, as of now, I have not received verification or confirmation that a claim has been officially filed or is being processed.This statement is provided as a factual record of the events and may be used for insurance, legal, or consumer protection purposes.

  Customer Answer

  Date: 05/22/2025

  The location that they did the changes *****************************************************

• Initial Complaint

  Date:05/19/2025

  Type:Service or Repair Issues
  Status:

  UnansweredMore info

  Complaint statuses

  Resolved:

  The complainant verified the issue was resolved to their satisfaction.

  Unresolved:

  The business responded to the dispute but failed to make a good faith effort to resolve it.

  Answered:

  The business addressed the issues within the complaint, but the consumer either a) did not accept the response, OR b) did not notify BBB as to their satisfaction.

  Unanswered:

  The business failed to respond to the dispute.

  Unpursuable:

  BBB is unable to locate the business.

  On 05/17/25 I went to grease monkey store #****. I needed a rotor retaining screws removed. To new rotors put on and one new caliper installed. They stripped the retainer s**** so they could put on the new rotors they broke the slide pin to the bracket front left. And they incorrectly put the other caliber back on after attempting to remove the rotor. They argued with me about how my car is safe with one slide pin. And gave me my car to leave. I said my brakes are still not tight and the pin is necessary. They told me I needed to leave cause it passed the safety check. I drove 3 minutes away . Before my car started smoking and I almost hit someone due to bad brakes. Upon returning they noticed the caliper wasnt installed correctly and pulled it back in the shop. By the time I received my car they were locking the shop door. I told him the brake pedal is still loose and my brake reservoir cap is now broken. They said I would be fine and they would order a new bracket. Half way home my brakes were still smoking. I stopped to get a new brake cap from *******. And went home to find they put a zip tie in place of the slide pin they broke. The corporate office is telling me they have no rights to this businesses decisions.

• Initial Complaint

  Date:05/06/2025

  Type:Customer Service Issues
  Status:

  UnansweredMore info

  Complaint statuses

  Resolved:

  The complainant verified the issue was resolved to their satisfaction.

  Unresolved:

  The business responded to the dispute but failed to make a good faith effort to resolve it.

  Answered:

  The business addressed the issues within the complaint, but the consumer either a) did not accept the response, OR b) did not notify BBB as to their satisfaction.

  Unanswered:

  The business failed to respond to the dispute.

  Unpursuable:

  BBB is unable to locate the business.

  I went to Grease Monkey for an oil change. While getting the oil change, they employee asked me if I wanted a Air Filter. I said, "No, I can do it myself." At the end, the employee told me the total. I thought it seemed high, but I just paid it. When I got home, I looked at the itemize parts of the invoice. I noticed they put in an air filter. I called, but I received no answer. I went online to fill out the communication page the same day or the next day, I don't remember exactly when. I received no response, so I called. Again, no answer. When I connected to an employee, the employee said he would get back to me as he has to talk to the district manager. I waited a week, no response back.I then called again two more times. I got the same answer, I will have to contact the manager. Again, no response back. I then wrote to corporate on their communication page on their webpage, after a few weeks, no response. This is when I thought I would be write to BBB.

• Initial Complaint

  Date:04/10/2025

  Type:Service or Repair Issues
  Status:

  AnsweredMore info

  Complaint statuses

  Resolved:

  The complainant verified the issue was resolved to their satisfaction.

  Unresolved:

  The business responded to the dispute but failed to make a good faith effort to resolve it.

  Answered:

  The business addressed the issues within the complaint, but the consumer either a) did not accept the response, OR b) did not notify BBB as to their satisfaction.

  Unanswered:

  The business failed to respond to the dispute.

  Unpursuable:

  BBB is unable to locate the business.

  I had a service done (rear differential oil change) at one of their locations (grease monkey at ************************************) they either forgot to put oil back in or put low oil or wrong oil in. It resulted in me having to purchase a new rear differential. I filed a claim and they immediately denied it even after I sent photos of the damages that show the gears got too hot and the note from the mechanic I had to have work on it. I have tried calling and emailing, but no one will take my calls or answer my emails.

  Business Response

  Date: 04/16/2025

  After a detailed investigation, it was determined that there was the correct amount of fluid in the vehicle's rear differential. There for we have denied this claim. 

  Customer Answer

  Date: 04/17/2025

   
  Complaint: 23186684
  
  I am rejecting this response because:
  When I received the service there was immediate damage to the gears in the rear end. There was no issue with my vehicle until after I got the service done. I didnt make it very far when the rear differential started to screech. You can see in the photos showing ***** marks and discoloration on the gears and bearings from gettingtoo hot. You can't say that nothing is wrong when there is clear damage.
  Sincerely,
  
  **** ******

• Initial Complaint

  Date:04/09/2025

  Type:Service or Repair Issues
  Status:

  AnsweredMore info

  Complaint statuses

  Resolved:

  The complainant verified the issue was resolved to their satisfaction.

  Unresolved:

  The business responded to the dispute but failed to make a good faith effort to resolve it.

  Answered:

  The business addressed the issues within the complaint, but the consumer either a) did not accept the response, OR b) did not notify BBB as to their satisfaction.

  Unanswered:

  The business failed to respond to the dispute.

  Unpursuable:

  BBB is unable to locate the business.

  In August 2024, I went to Grease Monkey in **********, center #***, for an oil change and tire rotation. After completing an oil and filter change, a staff member informed me they couldnt perform the tire rotation because they didnt have the tools to get the lug nuts off. I agreed to skip the rotation and proceeded with the other *******s.On March 1st, 2025, I brought my vehicle to ********* for a tire rotation. Their technicians informed me that the lug nuts had been stripped, cross-threaded, and in some cases were so damaged they broke during removal. I was told the lug nuts needed to be fully replaced, which cost me approximately $300 out of ********* other ******* involving the tires or lug nuts was performed between the Grease Monkey visit and the ********* inspection. Its clear that the damage occurred during the August ******* at Grease Monkey. When I contacted the location to discuss this, I was told they could offer a discount on a future visit. I found this response dismissive and insufficient considering the cost and inconvenience caused by their poor *******.I am requesting reimbursement for the $300 I paid to replace the damaged lug nuts, as the issue was directly caused by improper ******* during my visit to Grease Monkey in August 2024. I have documentation of the repair and can provide it upon request. I am not seeking anything beyond fair compensation for the costs I incurred due to their negligence.I have receipts for both visits and I have the damaged lug nuts in my possession, if those are neeeded.

  Business Response

  Date: 04/21/2025

  Hello, We will have our VP of Operations, Silver ********, reach out to you today, 4/21/2025.

   

  Thank You,

  *******************

   

  Customer Answer

  Date: 04/21/2025

   
  Complaint: 23182504
  
  I am rejecting this response because:

  Thank you for your response. Due to my work schedule, Im unable to take calls during the day. I also prefer to handle this matter in writing to ensure a documented record of communication. Please have Mr. ******** contact me via email at *****************************
  
  
  I look forward to resolving this issue professionally.
  
  
  Sincerely,
  ****** *****
   

  Business Response

  Date: 04/30/2025

  Our VP of Operations, Silver ********* did email Ms. ****** as requested on 4/30/2025.

• Initial Complaint

  Date:04/03/2025

  Type:Service or Repair Issues
  Status:

  AnsweredMore info

  Complaint statuses

  Resolved:

  The complainant verified the issue was resolved to their satisfaction.

  Unresolved:

  The business responded to the dispute but failed to make a good faith effort to resolve it.

  Answered:

  The business addressed the issues within the complaint, but the consumer either a) did not accept the response, OR b) did not notify BBB as to their satisfaction.

  Unanswered:

  The business failed to respond to the dispute.

  Unpursuable:

  BBB is unable to locate the business.

  Well Last Friday I went to Grease Monkey to get a Oil Change so I told them to make sure that yall check all of my fluids and they didnt do on my way to work I smelled something burning so I pulled over and my car was running hot so that means that they didnt charge the oil and didnt put any coolant and they didnt put any antifreeze any there so I want them to reimburse me my money back the amount that I have to pay to get it fix

  Business Response

  Date: 04/15/2025

  The customer did not receive a refund, because we provided the service. 

• Initial Complaint

  Date:03/18/2025

  Type:Service or Repair Issues
  Status:

  ResolvedMore info

  Complaint statuses

  Resolved:

  The complainant verified the issue was resolved to their satisfaction.

  Unresolved:

  The business responded to the dispute but failed to make a good faith effort to resolve it.

  Answered:

  The business addressed the issues within the complaint, but the consumer either a) did not accept the response, OR b) did not notify BBB as to their satisfaction.

  Unanswered:

  The business failed to respond to the dispute.

  Unpursuable:

  BBB is unable to locate the business.

  I took my car to get an oil change. When I brought my car home, it was leaking oil all over the garage. I took it back in to have it fixed within the week. They said they fixed the issue. A couple of weeks later my engine malfunction light came on. My husband popped the hood and there was oil everywhere. I took my car to the dealership to have it looked at and they said they would not fix it under warranty because the cause of the O2 sensor going out was because it was soaked in oil. My car is only two years old. I have talked to the manager at store #*** and they said they would fix it after many arguments back and forth. They said they would order the part, which they did from ****** and we had an appointment the following Wednesday to have it fixed. My husband called called that Wednesday morning to make sure everything was still set to have my car fixed. They said the part had not come in yet and that the guy who was supposed to fix it was out for personal issues and they were not sure when he would be back. They didn't call us to inform us of this, we luckily called them before bringing it in. We didn't hear anything back from them the next couple of days. I called on Friday to see what the plan was and if the part had come in. They said the part had still not come in and the guy who was supposed to fix it wouldn't be back for the time being. I asked if another location could do the repair. He said he would call over there and see if they could fix it. Again, no follow up communication. I called the other location on Saturday. They had not heard anything of the sort. I called the district manager ***** and he said he would call the store to see what the plan was. I heard from the original guy who was supposed to fix my car that he would get the part and have my car fixed this Wednesday. Again, no communication. I called them today to see if my car would be fixed Wednesday and they said they still did not have the part. I am beyond frustrated with this company

  Customer Answer

  Date: 04/08/2025

  Good morning as of yesterday Grease Monkey fixed my car. The claim number is  ********