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Sun Valley Mercedes Transmissions

5.0 (27 reviews)
Open 9:00 am - 5:00 pm
Updated 2 weeks ago

Services - Sun Valley Mercedes Transmissions

Auto transmission repair

Transmission leak inspection

Sun Valley Mercedes Transmissions Transmission Repair Photos

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Sun Valley Mercedes transmission are the thrust when I come to rebuilt remanufacturing transmission. they shipped it to me professionally and my mechanic installed it two days ago and the transmission is strong as a OX it shifts like new and looks like a factory transmission plus they give you a two year warranty as well.

Low vacuum culprit
Jim K.

Many thanks to Marc at SunValleyMercedesTransmission for diagnosing a 'harsh 1-2' shift problem with my 1995 Mercedes E300D. After 4-5 trips to transmission specialists quoting $2200+ for a rebuilt transmission, I was ready to sell the vehicle. A quick inspection of the vacuum lines going to the transmission revealed a short piece of dried-up rubber tubing resulting in low vacuum to the transmission modulator. The problem was solved for less then $1 of new rubber tubing. I'm now moving forward with more restoration work on my car. If you're experiencing transmission trouble and skeptical of the recommended solution contact...SunValleyMercedesTransmissions.

Mercedes Benz ML 500 special Edition!
Lee G.

Mark at Sun Valley of course came through with flying colors! Sun Valley Mercedes Transmission is the only place I will have a Mercedes transmission remanufactured! Mark is a wealth of knowledge on all Mercedes and I always have complete confidence in Sun Valley Mercedes Transmission when it comes to My Mercedes!

Sun Valley Mercedes is really truly a special organization. From the CEO to the transmission specialists, these guys know Mercedes transmission better than anyone I know. My 1987 300d needed an overhaul. Previously, I took another one of my Mercedes Diesel for an overhaul and Sun Valley did an excellent job. When the overhaul was done with my 300D, Marc suggested I take the car to my mechanic for some fine tuning which I did. For some reason, I had trouble driving the car on the freeway, so I thought the transmission was the issue. Marc asked me to come in the morning time and he reviewed the transmission and let me know that everything was perfect on his end and that the central issue was the mechanic needed to fix the schematic on the car. Then I took the car back to the mechanic and he was finally able to get my car working right. Let me just say that now the transmission shifts better than when the car had 20k miles on the engine---I am not joking. I am absolutely overjoyed with the work that Marc and his team have done. For anyone who lives close by, or perhaps in another state and is looking for a perfect transmission overhauling specialist, I give Sun Valley Mercedes my highest recommendation. Marc cares about the well being of his customers. Moreover, his commitment to service is truly awe-inspiring. Marc thank you again for taking time out of your busy schedule to help me out. I hope my transmission never goes bad again but if it does, I will be taking it to your shop for sure. take care.

Took my 1990 560 SEL to Sun Valley, from beginning to end, Marc was professional and accommodating. He would reply almost instantly to an email and did whatever he said in the time stated. I'll definitely be bringing friends and clients cars here if they are in need of a tranny. So happy to have this beauty back on the road.

Dante C.

Quick and effective. Super knowledgeable staff, and friendly as all get out. If your Mercedes needs transmission work - Sun Valley is just fundamentally the best.

Sunn Valley Mercedes transmissions rebuild the whole transmission on and made it easily handle the 800HP it has! Dave Adams

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11 years ago

I would like to thank Mark and his crew for doing an excellent job on my S550. They are the best when it comes to Mercedes transmission.

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Review Highlights - Sun Valley Mercedes Transmissions

Mark absolutely bent over backwards to make things right and ensure everything was handled properly.

Mentioned in 12 reviews

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Reseda

I had a great experience with this mechanic shop. The staff was professional, honest, and really…read moreknew what they were doing. I highly recommend them to anyone looking for reliable service.

BEWARE - DO NOT GO HERE Vincent (owner) is a CROOK. I…read morebrought my car in because the electric power steering failed. It took him over two weeks to "diagnose" and attempt repairs. During that time, he replaced multiple parts that didn't fix the issue, then removed them, returned them to the manufacturer, and reinstalled the old ones (which has now caused the blind spot monitor sensor to fail). After more than two weeks without my vehicle, he finally told me the power steering was repaired. When I picked up my car, I was charged over $1,200. Before I left, he gave the usual speech about wanting customers to be satisfied and told me to bring the car back if anything was wrong. As soon as I turned the car on, warning lights started appearing. He told me they would reset themselves. Shortly after, I realized I could no longer control the windows from the driver's side, the blind spot monitoring sensor wasn't working, and several other issues had appeared, none of which existed before I brought the car in. I called him and returned the vehicle. He refused to take responsibility for the new problems that occurred while my car was in his possession. He claimed the car already had these errors, which is completely FALSE. He even said he has video footage to prove my windows didn't work (which his report from 2/14 clearly states otherwise)--unbelievable. Although he fixed one issue, several others were created in the process. Instead of addressing the damage, he accused me of "looking for someone to blame" and "trying to come up on him." He even told me I could sue him if I wanted to. All I want is for him to fix the other issues HE created. I requested a refund so I could take my vehicle to a qualified professional to have it properly repaired. He refused and insisted he had nothing to do with the additional problems. His own report reflects that my windows and blind spot monitor were working when the car was dropped off on 2/14. At that point, I knew he was a crook and was not going to fix any of the issues he created. Vincent, there is no need to respond by claiming I am lying or that my car arrived with all of these issues--it did NOT, and your own report reflects that. Based on other reviews here (which I truly wish I had seen before bringing my car in), this seems to be a pattern. Now my car is full of errors that will cost me a fortune to fix. I feel like a complete fool for taking my car here and dealing with this dishonest crook.

Automotive Instincts - We are ready to greet you with a smile!

Automotive Instincts

(214 reviews)

Northridge

It's nice to find a Honest Auto Repair shop and these guys are. They listen to my complaints and…read moregave me a honest estimate to diagnose the issue and kept me informed on how the repairs on the car were going. They were able to repair my car in a timely manner and have been happy with the repairs. Their shop is really clean and they took care of my car and gave it back to me cleaner than I brought it to them. Their prices are very competitive and a good value.

I'm updating this review because the business response is misleading…read more I have a voicemail from Steve clearly stating that they did not want to get involved with my vehicle because another shop had already worked on it and he did not want me to possibly "get upset at them too." That was the exact reasoning given. This was not about warranty. It was not about saving me money. I was fully prepared to pay for an inspection or any necessary correction. I was simply asking for a professional second opinion. If a shop refuses work because they're concerned a customer might "get upset," that raises serious questions about confidence in their own work. A reputable shop stands behind its skills and diagnoses issues regardless of who previously touched the vehicle. Changing the explanation publicly after the fact does not reflect well. I stand by what I said. I had a very disappointing experience at Automotive Instincts in Northridge. I called and spoke with Steve about looking at my car after another shop had worked on it, and he basically told me they didn't want to touch it because another shop already did the work. His reasoning was that he didn't want me to "get upset at them too." That makes absolutely no sense. As a customer, I'm simply looking for a professional second opinion or proper correction if something wasn't done right. Refusing to even inspect the vehicle just because another shop previously worked on it feels unprofessional and dismissive. Cars get worked on by multiple shops all the time -- that's normal. Turning someone away out of fear of a bad review instead of standing behind your own skills says a lot. Very disappointing customer service. I expected more professionalism and confidence from a shop with such high ratings.

Sun Valley Mercedes Transmissions - transmissionrepair - Updated May 2026

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