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    The Engine Room

    4.8 (53 reviews)
    Open 7:30 am - 5:00 pm

    Services - The Engine Room

    Auto brake repair

    Auto engine repair

    The Engine Room Photos

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    10 years ago

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    10 years ago

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    9 years ago

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    11 years ago

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    10 years ago

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    10 years ago

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    13 years ago

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    Jonathan C.

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    10 years ago

    Drooped me off and picked me up! Did a great job for a fair price.

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    10 years ago

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    10 years ago

    I received honest and great service. I would recommend them to my friends!

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    11 years ago

    Awesome service. Trustworthy, Honest, Fair. Definitely will return. Been using them for years! Like family to us! As good as it gets!

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    11 years ago

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    Page 2 of 2

    Ask the Community - The Engine Room

    Review Highlights - The Engine Room

     With all the headaches I was having with the truck, I decided to visit the shop and speak to Ryan in person.

    Mentioned in 29 reviews

    Read more highlights

    Patrick's Auto Center

    Patrick's Auto Center

    4.7
    (382 reviews)

    My car needed both low beams replaced, an oil change and a tune up. Matt was quick to provide me…read morewith a quote that was reasonable. Scheduling the appointment was easy. Brought my car in, went over some paperwork and was told I'd be contacted once the inspection was complete. Sure enough Matt called me to let me know there were some items found during inspection and which ones needed to be addressed right away. After agreeing to the updated quote they got to work. I came back to the shop prior to being told my car was ready, and I think there may have been a delay in getting parts needed (dropped the car off at 9am, wasn't done until 4pm). Other than that, the quoted price is what I paid, there wasn't any pushing to buy a service that wasn't needed. I will definitely be bringing my car back for the additional work needed.

    I requested a quote through Yelp and my request was sent to multiple auto shops. I chose this…read morecompany based on location and called ahead to confirm they could do more than just read basic codes. I had already done my own diagnostics and knew the car was running rich. I had ruled out the upstream O2 sensor, catalytic converter (both new), MAP sensor, and fuel injectors. I explained all of this to Matt before bringing the car in. He assured me they could perform deeper diagnostics with their equipment. After dropping off the car, Matt called and told me they had "confirmed" exactly what I had already told them, and that the next step would be pulling spark plugs--for an additional fee. At that point, I decided to go elsewhere. What I don't understand is why I was still charged the full $85 diagnostic fee, plus a $4 hazardous materials fee and $3 shop supply fee. Plugging a car into a diagnostic scanner does not generate any hazardous waste--no fluids are drained, no chemicals are used, and no parts are replaced. There's nothing about a basic scan that would justify a hazardous materials charge. That kind of fee typically applies when disposing of things like oil, coolant, or other regulated waste, none of which occurred here. In the end, I paid $92, wasted time and gas, and learned nothing new. The most concerning part was Matt admitting he didn't even know spark plugs would need to be checked as part of further diagnosis.

    Super Service of Pomona Valley

    Super Service of Pomona Valley

    4.6
    (704 reviews)

    My Pros: Paul was the main guy who I consulted with and he…read moreis overall very chill and cool guy (complimented my taste in music, thank you~). He has great customer service at the front desk and answered any questions and concerns I had. He offered a rental car or a free ride back home (which is the services they provide). The driver was very kind, friendly and safe driver. My car went in for diagnostics, after inspection, I gave a go to replace the clogged CAT. They gave me a very great inspection report, full with pictures and easy to read descriptions (I also very much like the 3D video explanations to which parts they are referring to). For now, it runs a lot smoother and I'm very happy with how my car runs (I haven't driven it long enough yet). I drive the most in my family, so it feels great to get things I need done now. :) My cons: I would say communication could be a little better. I had dropped my car off 5/29 and didn't get it back until 6/12. It's the longest I've ever had my car stay at a shop, and I will admit I was uncomfortable with how long it stood there. I did feel strung along the entire process, as I was told multiple different dates when my car should be finished. I had to call the shop a good number of times to get an update and I hate having to call to ask the same question over and over (felt like a kid on a road trip constantly asking "are we there yet?"). So, I'm not sure how their process goes about when taking in cars, if maybe they take a little too much than what they can handle time-wise or if maybe scheduling an appointment with them would make a difference? I didn't find out what the issue was until I had come in to pick up my car, to which I am very understanding that things happen, but I wish I was informed during the phone calls I had made. I'm aware of the excessive amount of problems there are with CAT's and they had informed me that the CAT's were being stolen during transport before they even reach the shop or customers (which is such an issue in itself, that ticks me off), so the shop had faced delay due to those circumstances that were not in their control. :) Overall: Pretty good and very kind set of guys that work there. Communication with the customer could be better, so I didn't have to feel left in the dark. Would prefer accurate finish dates and with explanation if there is ever delay (I did refuse a rental car in the beginning because I was told inspection would be done the following day if not till very early next week, but then a few days became 2 weeks) so, definitely want more accurate times to plan my days that I don't have a car. :)

    Very straightforward and good service, friendly staff and quick helpful support. Definitely would…read morerecommend

    Midas

    Midas

    4.1
    (206 reviews)

    I brought my 2019 VW Passat to Midas in Diamond Bar, CA for an oil change, and the experience was…read moreoutstanding from start to finish. Right away, the staff was friendly, professional, and respectful of my time. The shop was clean, well-organized, and clearly run by people who care about their work. The oil change was completed efficiently, and everything was explained clearly--no pressure, no upselling, just honest service. A special shout-out to Eric Waltz, the Service Manager, for his exceptional customer service. Eric was knowledgeable, transparent, and made sure I felt confident about the work being done on my vehicle. It's rare to find a service manager who is both professional and genuinely customer-focused, and he sets the tone for the entire team. The rest of the staff personnel were equally impressive--courteous, attentive, and easy to work with. It's clear this location values customer satisfaction and quality workmanship. If you're looking for a trustworthy place for routine maintenance like an oil change--or anything else--I highly recommend Midas of Diamond Bar. I'll definitely be returning for future service. Shane S. Wiley A new customer, which I will let all my family and friends know!

    Never again. I have been going to this Midas for years. It…read morewas great. Then Mr. Patel retired. My last two visits were a total of $4,100. I own two well maintained Hondas, which are supposed to average $600-$1,000 maintenance per year. I am now looking for a new, honest auto shop. When I searched online, AI explained that Midas in NOT known for being a very honest business, and that you are wholly reliant on the manager's professionalism and ethics. I gave them 2 stars because they are courteous and professional while gouging you. : (

    The Engine Room - autorepair - Updated July 2026

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