Marvin does GREAT PPIs for 911s. The guy is super thorough and spends a fair amount of time going over every detail from exhaust tips to the front bushings. Noting everything that is aftermarket replacements to factory specs. Not only is the report 6-8 pages long, he will spend the time to review every item with you. He tells it like it is, rendering fact from whatever fiction you would imagine or seller tells you. Our PPI on a 997.2 was very fair at his rate and well worth the piece of mind knowing the full story when you're about to drop five figures plus on a used car. The reality of it all is he'll practically spend a whole day going over a car, you tell me what your mechanic charges an hour. He is a one man show so be patient and listen to what the guy has to say. You can really tell he respects marquee and enjoys what he does. read more

Marvin was very friendly and helpful. He was quick to provide the service I requested and made sure I got a good deal. He was very knowledgeable and answered all my questions! Thanks Marvin. I recommend anyone with a Porsche to come here. read more

I came to Marvin for a pre-purchase inspection on a 997 Carrera GTS that I was interested in buying. Marvin's inspection was extremely, thorough, and detailed - even going above and beyond by walking through the inspection results/car for over an hour. Though his rate is steep, for the value, I felt that I got my money's worth, especially when you consider the car price/potential maintenance you'll be dealing with for these cars. I would highly recommend Marvin to anyone interested in a PPI on a Porsche. read more

I took my Porsche 928 to Marvin at The RennShop because of a mysterious problem with my brakes. A few years earlier, Marvin had resolved a tricky ignition issue on my car. I remembered his emphasis on proper diagnostics before starting any repair work - more like a good MD, but specialized in Porsches (a "Porschologist"). His squeaky clean shop and great communications perfectly fit that picture. Marvin went through the whole car in detail. He then put together a treatment plan for healing all its ailments. Before, during, and after the process, Marvin patiently educated me about the reasons, steps, and limitations of the procedures he suggested. I feel I'm in great hands with Marvin, and highly recommend him to anyone in the area who needs work done on his Porsche. He is a highly capable "Porschologist" with great car-side manners, and works out of a nice, clean clinic. read more

The RennShop - The RennShop Porsche Service in Santa Clara, CA - Auto Repair Near Me - Mountain View, California

I tried calling a few times and left a message via their website. No response. Are they even open? They could be the best auto shop in the world but it doesn't matter if they don't pick up the phone. read more

5 Star+++++ After an unhappy experience at Steven's Creek Porsche, I've been searching for a Porsche repair/service shop for over a year now and I finally came across The RennShop. My first encounter with Marvin, the President/Owner of the shop has been quite an experience. I have a 2000 Boxster that needed a 60K maintenance service, a new battery, a check engine light problem, and other little items needing attention. Marvin was very attentive and courteous over the phone, had a great amount of knowledge/experience, and such an awesome personality and overall excellent customer service. Took my car to his shop which was very clean, organized, and not to mention, certified green (earth friendly) mechanic shop! He only carries and recommends the best parts for your Porsche with outstanding prices!!! Marvin took his time with my Boxster, kept in touch with the details and let me decide which parts I wanted to go with and provide the pros/cons and cost. If you're looking for a Porsche mechanic who's honest, detail oriented, clean, organized, thorough with their work and service, believes in quality work and parts, then The RennShop is where to go for your Porsche service/repair needs! My experience with The RennShop has made me know my car from the inside and out, and not to mention the underneath! When I got my Boxster back, it drove like a brand new car. He sat down with me and provided me with the each and every detail about the car and also gave me a copy of the 2 page inspection list (kind of like a car evaluation health list). I thought wow, he's more thorough than other car specialist shops I've been to and even more thorough than any of my doctors! Marvin definitely exceeded my expectations! Service and parts are of the highest quality I have every experienced and not to mention, affordable. If you visit his website, you'll find pictures of projects he worked on and as clean as it shows on-line is what you'll find at his shop. After taking my Boxster there, I would not consider taking it to a dealership for service or any other specialized Porsche shops. Now I'm thinking of getting another Porsche. There's nothing like purchasing a Porsche with an awesome mechanic! read more

Marvin appears to do good work, but prepare to pay an arm and a leg to find out! Keep in mind this review is not in the actual work, but the process beforehand. I hope this will be helpful for some of you. My Boxster needs a clutch job. Now, I understand for most cases, the flywheel should be replaced if there are hotspots. However, there is also a chance that simple resurfacing may be an option. From our phone conversation to our in person meeting, Marvin continually stresses to have the $800 flywheel replaced - without actually taking apart the clutch to see it. It's reasonable to TRY and upsell, but if the customer is continually saying that s/he must see the evidence first, then BACK OFF. First fail. So here's what happens.. I get my Boxster towed in, he drives it for about 5 feet, takes a quick look under the car, proceeds to type up a proposal, and it amounts to a whopping $4,100. This includes the clutch work and a whole bunch of extra stuff. To test him, I ask what he thinks is 'mission critical' and he has the stomach to say "All of it." Rubbish! Most of the things he recommended are 'nice-to-haves.' What started off as a $2,000 job has more than doubled. Second fail. Next, the really fun part, I suggested we focus on the most important thing: the CLUTCH, and I'll let him know while he works on the car to replace the flywheel or not. I told Marvin to take the mentioned area apart, show me why it should/not be replaced, I'll then call my friend who's a retired porsche mechanic and relay Marvin's opinion, and then make my own decision. All this should not take more than 5 minutes. I understand this is not common practice in the auto shop industry, but if a customer is guaranteeing you a certain amount of business, what's wrong with him/her feeling comfortable?? Marvin then tells me he senses that I don't trust him and he is not comfortable with doing the job. Wait. WAIT A SEC. I don't trust you? OF COURSE I DONT TRUST YOU. I'VE ONLY KNOWN YOU FOR 10 MINUTES. Our dialogue then proceeds something like this: me: "you're telling me you're not ok with me calling my friend to get his quick opinion so I can feel more comfortable with the job?" Marvin: "I can't keep the job stalled in the shop, I'm on the clock" me: "I will be in the shop when you are working on my car and my friend will be on standby on the phone. It will not take more than 5 min." Marvin: "Where are you going to sit?" me: "Here, in your office." Marvin: "You can't sit here" me: "Then I'll wait in my other car in the parking lot" Marvin: "You can't do that" (at this point you can see Marvin's hands and body twitching with anger) me: "Then I don't feel comfortable with this either." (I stand up and leave) I proceed to call 3 other shops and every single one of them were completely ok with me getting a second opinion while they worked on my vehicle. In fact, one shop was even willing to CALL ME with their findings, let me chat with my friend, and wait for my decision. Ultimately that's the shop I went with and the owner did an amazing job. If you want Marvin to touch your Porsche, you better prepare to have an uncompromising trust in him, and open up your wallet to everything he recommends. If, on the other hand, you want your trust won first, there are plenty of other exceptional and friendly Porsche mechanics. read more

Just went in for a major service a few days ago... As expected, the job is done right again. Good work! After reading other awkwardly long reviews, I couldn't help thinking... Are we talking about the same place?? In my experience, expectation, communication, and satisfaction are interrelated. Marvin has always been upfront and accurate about his estimate. So ultimately It is really up to me how far to go with him. Of course, I would not expect him to work for free as everybody has the right to make a living. For those who like to rant, I would say perhaps they should check their expectation, communication and stop wasting others time. Quality doesn't come cheap and it is pay now or pay later. Think how much saving there will be if you have to redo a repair again. read more

What can i say about Dr. Marvin. Yeah he is a Porsche doctor to the max and knows his stuff really well. My baby (911-997S) needed an oil change so based off of these reviews, I made an appointment to have it checked. First time I made an appointment, I had to cancel due to work related stuff. This time I told myself that I will definitely make it in. I did price comparison and contemplated going to the dealer vs. Marvin and was completely double minded. Ofcourse the dealer would give me a loaner car while mine is being serviced etc.etc. I still decided to give Marvin a try and had my wife give me a ride back from his shop. I was about 2 hours late and had completely forgotten about my appointment until he called during that morning. He was still cool about it and serviced my car. Took him about 6 hours to do a full service but it was all worth it. He did a complete inspection and found couple more faults which the dealership needs to check. Overall I was impressed by his enthusiasm and knowledge of Porsche altogether. He is very detailed and loves to explain stuff if you dont know certain features etc. Highly recommended. read more

I was back at Marvin's recently for a 15k service, plus a couple of other minor items. His shop is amazingly clean, like always. My kids love going there too. He has gotten very busy, so appointments are harder to get, but Marvin will work with you. I was there another time to check on some possible tire noise. He is meticulous. I love the way he double checks and triple checks everything, like the torque on the wheel bolts. read more

Hard for me to give anything except 5 stars to Marvin. Its rare and so refreshing to see any kind of business care this much about customer service. He literally spent almost an hour with me after the car has been repaired to go over a free 5 page check list of all inspected systems in the car. Very few shops have I been to where I'm as impressed as I was here. We Porsche owners are very lucky to have a mechanic like Marvin working on our babies. read more

I have been Boxstering for 9 years and know dealership and independent Porsche mechanics. I heard a new independent Porsche shop had recently opened. I went by the shop to check it out since I was due for a clutch replacement at 67,000 miles. Marvin Weitz is the owner of RennShop. I remembered his face from one of the local dealerships. Marvin worked for 2 local Porsche dealerships over the years and then opened his own shop. I spoke to Marvin at his shop a few times. He knew about the problem issues with my vehicle. He also has most of the factory tools and a PST2 and a Bosch Hammer, which is the diagnostic computers. I then spoke to some of the dealership mechanics I have known for years when Marvin use to work next to them. I checked out Marvin, and he checked out. Marvin replaced the clutch, resealed the engine. and replaced the oil separator and fuel filter. My 1997 Boxster now drives like it did when I bought it. Marvin is meticulous, like he was working on his own car. read more

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Marvin is the man. I took my '95 993 here for an evaluation and he did the most thorough PPI I could have ever imagined. Way Surpassed my expectations. He recommended some fixes, but never did I feel like he was up selling me. When i got the car back, it was noticeably running better. He's definitely going to be my cars pediatrician for life! read more

It's been a long time since I wrote a Yelp review. However, with the service that Marvin provided, I felt obligated to put a note up here too. I was driving from Seattle to LA in my meticulously maintained 2001 Porsche Boxster S. While in SF, the clutch decided to crap out on me. I was able to limp down to San Jose to stay with a friend, where I would find someone to work on my car. After talking with Marvin, and telling him that I needed to be back in Seattle in 5 days, he assured me that he was up to the task of fixing my clutch and getting me back on the road ASAP. He put the other customers on hold and fixed my car immediately. The problems were extensive and he spent more than hour just explaining to me what he was going to do with my car. He showed me the parts, the issues, and told me all the costs up front. Of course he tried to upsell me on other repair items. He runs a business, that's what they do. I'm still not sure if he was upselling me or if he is just that OCD and he wanted everything on the car to be perfect. I politely declined the extra work, and he was totally cool with that. The car was completed on time, and he came in on his day off so that I could pick it up in time for my trip back to Seattle. On top of all of that, he did a 6 page inspection of my car and gave me a list of things to fix once I returned to Seattle. He didn't need to do that, because he knew I wasn't coming back to see him and therefore I couldn't be repeat business. He assured me that he does this inspection for everyone as a courtesy. He spent an hour, on his day off, going over the inspection report line by line. Holy crap. I've never seen a mechanic as dedicated and detailed oriented as Marvin. I may drive back to San Jose each year just to have HIM complete my yearly maintenance. Whomever gives Marvin less than 5 stars has obviously never been to another mechanic before. No other mechanic is like him. read more

After several semi-satisfactory experiences with several Porsche Specialists including Porsche Dealerships, my experience with the RennShop has been incomparable. After my first visit, I was thoroughly impressed with the precision, care and meticulous attention to detail Marvin took in the diagnostics, repair and flawless detailing of my vehicles. From my experience, whether the car is a timeless classic, a vintage or a contemporary Porsche, Marvin takes exceptional care of the vehicles as if it were his own. I definitely wouldn't trust my Porsche with anyone else. read more

This guy who runs this shop is a maniac. I took my Porsche cayenne for an oil change since the Porsche showroom charges $350.00. This guy said he will charge me $450.00. how incredible is that? Geez he is a big rip off and I don't know why would anyone pay him more than the showroom... OMG...I am speechless ... read more

Marvin is the man. Never have I met someone as passionate about Porsches as Marvin. I was buying a used Porsche in the south bay, and before I put my hard earned money down, I wanted an expert to go over the car. No only did Marvin go over the entire car with a fine hand, but he pointed out every little problem with the car. The money I paid for his services were well worth it, and I learned a lot about my future car as well. If you have a passion for Porsches, there is no better person to go to than Marvin. I can tell you that Marvin has an artisanal appreciation for these amazing cars. His inspection took his entire attention for the better half of a Saturday, and I spent 2 hours discussing the car with him at 8PM! Never did I feel rushed...quite the opposite...I felt like Marvin was getting just as much out of talking with me that I was getting out of him!! I didn't get any service work from Marvin, but I can only imagine how thorough he would be with any car he gets his hands on, especially Porsches. If you are looking for a bargain, a jiffy lube, or some half ass service on your Porsche, this is not the place for you. If you want your car to be pampered and taken care of the way a fine automobile should be, then you will never spend a better penny on your car than at The Rennshop. I consider myself truly lucky to have met someone like Marvin. read more

I didn't actually go to this shop, but I called to find out their hours. I called at nearly 9:30 at night since the information isn't online. I expected a machine but was surprised when someone answered. The shop owner wasn't able to help me out since they only handle Porshe cars, but he was very gracious and recommended someone else and gave me their number so that I could get a used car inspected. Very friendly, awesome! read more

The RennShop speializes in all Porsche automobiles. I had a 4 cylinder engine built for my 914 by a local machine shop, but I needed someone to swap out the old engine. The job entailed a little more than just bolting up the new motor. Marvin handled everything from fabing up a bracket to relocate the throttle cable, to redoing some of the wiring harness to make things work. The end result is beautiful and functional, with close attention to details. I wouldn't take a Porsche anywhere else for service. read more

I rarely write reviews on yelp, so when I do, it means something. I recently brought my Porsche to Marvin for one of the major services. I found him by reading recommendations in Porsche online forums, as well as here on Yelp. Everyone had similar high marks for him, so I decided to give him a shot. My first impression was that his shop was cleaner than most shops I've been in, which was a good sign. There were also a variety of different (and only) P-cars in the shop, so it's good to know that he specializes in my make. Marvin really takes his time with his services and is more thorough than the dealer will ever be. He did a thorough inspection, told me what my car needed beyond the regular service, but wasn't pushy about it. He even fixed something gratis. I am the type of person that has tons of questions and he patiently answered all of them. To top it off, he personally washed my car. Rennshop is a one-man shop, so it has it's pros and cons. Marvin definitely prides himself in his work, but that also means that services take a little longer and someone may or may not pick up the phone. He'll usually return your call within a couple hours though. You also don't get a loaner car. All in all, I highly recommend this place and will definitely be bringing my car back. read more

My Boxster needed some rather extensive maintenance and restoration work and I was worried about quality and cost. Marvin and the RennShop did an outstanding job at a fair price. Marvin was extraordinarily communicative -- I was well informed about the diagnostics, parts, service, and costs. When I picked up the car, he spent an hour with me reviewing his work. Marvin is a one man shop so don't expect a day or two turn-around (mine took 9 days) but quality trumps speed in my book any day. I give Marvin my highest recommendation... read more

After reading the high ratings for this shop and being referred to him by a Porsche forum, I came to the shop with confidence in Marvin -- and he lived up to his great reputation. He has incredible attention to detail, never rushes you, completely and thoroughly explains things and options, cheerful, flexible in scheduling, immaculate shop, and the list goes on and on. A+ 5-star service and competence in working on Porsche's. I highly recommend The RennShop Inc. read more

I can't remember the last time I dealt with a service professional as competent and confidence-inducing as Marvin. What a star!

SO im not a Porsche owner....but i did come to this shop with the bf. Marvin is great. he took the time to explain everything to us and as he was explaining...i was like....damn...this guy is detailed. I told him before I left...i wish he worked on Mazdas too =P This shop/Marvin is a star! If you have a porsche .....this is the shop to come to...... read more

And you thought that "Honest Mechanic" was an oxymoron. It's hard to find a hard working, honest mechanic that knows what he's doing and does it well. Marvin is one of those guys. Notice I said Marvin, not The Renn Shop or the company he works for is great, he is The Renn Shop. If you're looking for personable, great customer service, look no further. read more

I just picked up my 99 boxster from the renn shop it was a positive experience from start to finish! thank you Marvin for picking me up all the way in fremont, for cleaning my car very nice job, for giving me a great price, and for doing a great job, I am impressed with your shop very clean and organized, thanks for taking the time to put the car up in the air and show me the work you did, I will drive all the way from livermore to have you do any future service on my car! when you find some one that is honest and takes pride in their work its worth the drive. J.c read more

I had a great experience at The Rennshop. I agree with the other reviews this place is amazing. Marvin knows the Porsche very well and his work is extremely detailed. He was pushy about anything and his work exceeded my expectations. I also think his prices are fair for top notch work. If you want to put your head in the sand and try to go on the cheap with your Porsche, this isn't your place but if you are concerned with the longevity of your car then I highly recommend. He also suggested some future upgrades that really make sense for the car. I'm sold I have found my mechanic. read more

Marvin has helped with my 02 911 diagnostics. He is precise and extremely knowledgeable with Porsche vehicles. He is more of a enthuses who knows the in and out. I would have to say RennShop is beyond a repair facility more like an engineering shop with lots of Porsche-Passion. read more

Marvin is the encyclopedia of Porsches. Or for all you valley tech geeks, Marvin is the Wikipedia of Porsches. He knows exactly what he is doing. My 993 splits time between the Reno/Lake Tahoe area and Silicon Valley and Marvin is the ONLY person I trust with this car. I bring my car all the way from Reno to have Marvin work his magic on this car. His shop is spotless and he is ultra thorough. He can do anything that is Porsche related. From oil changes to full rack work. Seriously, this is where you want to have your Porsche worked on. Max H below seriously doesn't have a clue...and what GUY would drive a Boxster? read more

5 Stars for Marvin and the RennShop. Thank you for taking care of our Turbo! Marvin's customer service is straight quality, he is very nice and informative, and does not push you on repairs you do not need. He is very detailed with every maintenance repair and also gives his opinion on what will need to be maintained in the future. Highly recommend if you have a P-Car. read more

I have become quite the yelper of late. I am eating better, having more fun, and not getting ripped off as a result. This place tops em all. Had appointment at another place (you will find them on yelp) and decided to check them out on yelp first. Nuff said, lots of complaints so I came to Rennshop instead. I mean this is the nicest possible way. This guy is the rainman of porsches. he knows everything about everything porsche (i know a bit myself) but wow, not only does he know the info, he knows how to explain and apply it. Honest, detailed, excellent work, great service, car runs great. Now I have my lifetime Porsche mechanic :-). I'd do 6 stars if they allowed on yelp ****** read more

It's been a while since I wrote a Yelp review but felt that I had to after my conversation with Marvin. I have a 2013 Cayenne and it's in need of an oil change. I was planning on going to Rennshop to get it done. When I got on the phone with Marvin, he informed me that it would take 1-3 years before the independents could work on the car (due to accessibility to current Porsche diagnostic tools). He asked where I lived and work so as to steer me to a dealership that could be serve my needs. Marvin was very thorough in his explanations and was very giving of his time; even though he knew that I would not be an immediate customer of his. So for now, I'll have to get my ride serviced at the stealership but am waiting for the day when I can start patroning the Rennshop. read more

My husband loved his Porsche, and he would only take it to Marvin at the Rennshop. We recently needed to get a more family friendly car, but while he had it, he only trusted Marvin with it. Marvin would literally talk to my husband about Porsches for an hour on the phone. He apparently knew everything about them and was passionate about his trade. He would even take him on road test drives just to point out some detail. While waiting I would sometimes get to play with his adorable shop dog Porscha too. Thank you Marvin for help taking car of my husband's baby! read more

I picked up my car last evening for its first service interval under my ownership. I was pleasantly surprised at how detailed and meticulous Marvin was with servicing my car! Marvin is knowledgable, takes great pride in his work and treated my car as if it were his own, that is spectacular service. From now on, Marvin and the RennShop will be the only servicing my car, outside of warranty items. I highly recommend the RennShop! read more

The RennShop is absolutely everything a discerning Porsche owner seeks in a Porsche shop. Marvin, the owner, is a hands-down expert on Porsche. He focuses only on Porsche -- all day, every day. He is very personable and honest, if there is a problem, he explains what it is, what the options are and what he would do to solve it if the car were his. Marvin was previously a tech at a local Porsche dealership, and what he is doing on his own will put any dealerhip's service department out of business. The shop is so clean that it sparkles and you could eat off the floor. His equipment is state of the art and he is very, VERY knowledgeable. His prices are fair and competitive. Marvin definitely goes the extra mile to help his customers at all times. When I needed a place to store my '07 C4S for a week while the wheels were being powder coated, Marvin made room in his shop. He even dismounted and mounted the wheels and, when I offered to pay him for storage and for his time, he wouldn't even take my money. My wife and I had to force a gift card on him! Knowing Marvin is like having a great friend or family member that you can trust... who is a Porsche expert at the same time! read more

Good, fast, cheap... pick two as the old adage goes. Marvin is GREAT. Not good. He's a one man shop, so it takes more time than you'd like sometimes. He's cheaper than the dealer and on par with other independents in the area. GREAT means enthusiasm, nearly insane attention to detail (he loves these cars with a passion), and the car is CLEANER than when you dropped it off. I was a first time manual owner and he even invited me out for a lesson. Marvin is a genuine Porsche guy with a kind soul and attention to detail. read more

Marvin is a great mechanic and has excellent attention to detail. I took a 997 Turbo into his shop for a pre-purchase inspection, and both the seller and myself were impressed with the level of detail he went into. I ended up not only purchasing the vehicle, but also having Marvin replace the plugs and ignition coils. His work exceeded my expectations, which were already high. Will not hesitate to take my turbo back there! read more

Just had a major service here. As usual, Marvin's been extremely helpful and detailed in every inspection and repair. He actually sits down with me from his busy schedule explaining every findings. Marvin definitely goes above and beyond. read more

Great product! Great guy to deal with, good luck Marv!

Marvin is one of the most thorough mechanics I have ever met. My clutch went out and Marvin took the time to explain everything and broke everything down before asking for a decision. Marvin is definitely not cheap - but you absolutely get what you paid for. He's one of the best mechanics I have used and I will definitely be going back. read more