I dealt with Mike DeJung 9 years ago. I never wrote a yelp review because I don't really like them. Also, my wife was dying of cancer and there were more important things to deal with. However, upon reflection, dealing with Mike was the worst business experience of my life. All of things that the other negative reviewers said are true. Mike is arrogant and demeaning. I took my Boxster to his shop to have the convertible top mechanism repaired. It took several months, several broken bows and a lot of money and he was never able fix it. I would try to strategize asking for status as he was show difficult to talk to. One time, I noticed my car was sitting outside with the windows down. I mentioned this to him. The next time I went in, the interior was soaked. No comment from Mike. One time, I went into the back of the shop because he didn't answer my shouts. He gave me a lecture on touching other people's expensive cars. There was no touching. At the end, after a couple months of repeated failures I decided to cut my loses and take my car elsewhere. He asked me what I thought was fair for his final charge, I I was kind of dumbfounded. I should have said he owed me for my time and money. However, I paid Mike a little more more just to get out of there. I went to Dibble's and they fixed the top with one visit and at a reasonable charge. It's still working 9 years later. End of story. read more

Known Steve for years, he has worked on various Porsches of mine (356, 911, 970) he is a great mechanic and is very straightforward on his diagnosis. If he cannot fix a problem he is good about referring you to someone who can. I trust him completely. read more

I have been coming to De Jung for years with a problematic 986. At this point, I'd be surprised if the bulb on my check engine light doesn't just burn out one of these days with all the codes this car has had since the day I got it. My saving grace is Steve at De Jung. He always gets me in quick for a diagnostic(oftentimes day-of!), gives me a recommendation, and doesn't pressure me at all to go one way or another. He a genuine guy and it's obvious when you talk to him. Plus, there are always cool Porsches around to look at whenever I have to stop by. read more

De Jung Motorsport - 986 - Auto Repair Near Me - Cotati, California

Steve is direct and to the point. Porsche repair is not a business for him but more of a passion. Work done right at fair rates.

When I bought my first Porsche 3 years ago I was looking for a mechanic in Sonoma County who was meticulous, has racing experience, and REALLY knows the brand. Steve is just the guy I was looking for. He's thorough, honest, and I love that he's doing the work himself as opposed to having other mechanics who may or may not pay so much attention to detail doing the work. I will happily continue taking my car here! read more

Aircooled mechanics aren't that plentiful. Years ago...Steve rebuit my transmission on my 914 and when i got it back it started making some loud alarming noises .He was very dismissive and wouldn't even take the time to look under the car. This led to me losing power on hwy 101 in a very dangerous situation. It was towed to Matt McCoy German Auto who found that the cv bolts were left loose! I decided to count myself lucky that I wasn't killed and moved on . Today I stopped by Jung and told Steve about what had happened years ago and gave him a chance to own up to his arrogance and a mistake that could have cost me my life. Nope no such response.!still graceless and dismissive. If this guy is such a great detailed mechanic why would he perform such an amateur and dangerous mistake. He had two chances to own up before this review. If you want dignity and respect or even safety, skip this guy . read more

The owner is a pretty busy guy, and very knowledgeable with Porsche. I recently purchased a 2006 911 Carrera. We spent some time in the vehicle, test driving it. Then he put it on the lift for the inspection. I felt Steve was very trustworthy and I will bring my car to him again for service! read more

De Jung Motorsport - Auto Repair Near Me - Cotati, California

Steve offers topnotch expertise when it comes to BMW and Porsche. LOL tho I can't vouch for the Porsche expertise myself I can say that he was very thorough with my car. He trusts the workmanship of these cars and provides the service to make them last. He has cars coming in with 200k+ miles on them and keeps them running strong. I personally can't stand our local BMW dealership and meeting with Steve made that even more clear. He is very to the point, knows his cars and won't try to have you pay for unneeded services. read more

Stay away! If slow and inconsiderate as well as acerbic, inappropriate and irresponsible is your thing, he is your guy. Find someone good who actually wants to help. read more

Power. Presence. Poise. Precision. Perfection. These ever-evocative adjectives have been synonymous with the very character of the Porsche 911 for 50 years. Such a car needs to be examined in the real world from a person who shares those merits to investigate and replenish the true spirit of the Porsche 911 cars. Steve De Jung is a craftsman who has a passion for Porsche motorsport. For nearly 35 years, Steve has studied and deeply understood the Porsche sporting prowess. His communication style is very scientific. He uses equipment to find fault and then makes suggestions based on his vision for improvement. Thank you Steve for reassuringly keeping the Porsche 911 magic alive. We are now in sports car utopia with a genuine, clear voice. read more

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Our interaction could have been handled with "drop the keys and I will spend an hour looking it identify the problem" but Steve is so concerned with instructing me when I'm allowed to talk, the fact that my opinion of the problem is insignificant, history of work done is irrelevant, how to scope the conversation, which changed from telling me i know nothing to what approach to take. Clearly doesn't want my car or money. Yes, I am aware 996's have lots of issues and mine is at the top of the list, but you sir, are just an asshole. I will GLADLY drive it to Marin or South Bay. read more

I heard he is a nice old man before going to the shop, but I had a totally different experience. It was raining and he had the garage door closed. I entered through the office door looking for him and saying " HELLO" loud enough to be heard but apparently he did not hear me and once i was close enough to speak at a normal level, he got scared and the next words out of his mouth were "NEXT TIME I WILL SHOOT YOU. I PROMISSE" out of nowhere. Just like that! I got surprised. I expected everything but a threat! I would NEVER recommend this body shop to anyone. read more

If you want no BS, direct to the point, honest mechanic then Steve is it. I'll admit that he's not for everyone but once you get to know him he is a GREAT person - no fluff here, absolutely straight up. He is a one man shop and his work is as perfect as can be. He is also a great problem solver and do things the right way. The only problem I can see for most people is traveling to Cotati to have service done. To me it's an excuse to get out of the office for a nice fun drive. read more

We've been going to Steve for many years as he's lovingly cared for our BMW and Porsche. He doggedly works to find cost-effective solutions to difficult problems yet has the experience to pick out answers to common problems. His honesty gives the customer peace-of-mind in a world where auto dealer repair seems shady and unreliable. He's a great alternative to those shops, and you always know who is actually working on your car. He is a meticulous and articulate mechanic who takes pride in what he does. A true professional. When you go there, look at the shop. No mess or grease. Looks like you could eat off his garage floor. He can be a bit "chatty", but you always go away learning something about your car or the world of Porsches. I always love our discussions about cars! Most notable experience: I have an 88 Porsche that had the engine stall out unpredictably. While it rarely did it for Steve, he finally got it to stall, spent hours finding out where it was coming from, gave me alternatives for the repair (a rare and costly part), but wound up calling a friend of his in SoCal who knows about these parts. His friend guided him through opening my part where he found a broken solder joint. He re-soldered it, and the car has been perfect ever since -- and he did this all at a very modest cost to me. I hope he never retires!! read more

I have a 2001 Boxster, it just turned 100K. I will only take this to DeJung (Steve). He is dedicated and provides Excellent Service. It is a small shop and he works alone. I would call ahead for an appointment or wait in the front office. Honest, knows Porsche inside and out, runs his business like a Porsche, with precision. read more

Sally M, how funny you are. If you read her comment closely she goes on to tell you how she did not get to tell Steve all "she" knows about her car. He most likely shut you down because you already knew it all, right? Steve is a gem and takes great care to treat all clients wth respect. I can only imagine what you put him through to cause such a nasty review. I am pretty sure he is stoked you'll never be back. Remember, you get what you give in the world of business Missy! Oh and my Porsche humms baby! read more

I was referred to Steve by a smog specialist and had been looking for a good Porsche mechanic in the North Bay since moving here 4 years ago; don't like to go to the dealers. If you want a lot of chummy conversation about the weather and sports, Steve is not your guy; but if you want a fair, knowledgeable and skilled mechanic who really loves Porsches then you should definitely bring your Porsche to Steve. He did a bunch of odds and ends type work on my Boxster S and I was very pleased with the result and reasonable cost. I will definitely be returning in future for regular services. I think he works on BMWs as well. PS - this was an unsolicited review read more

Steve is hands down the most informative, accurate Porsche mechanic around. His pricing is beyond fair and his service is A+. Without Steve owning my car would not be nearly as fun read more

I had to laugh at Sally M's review! Steve is one of the top mechanics in the No. Bay and is extremely well reputed in the Porsche world as evidenced by the other reviewers. That rather slanderous and snarky comment about how he treats women is way off base. He's been our family's mechanic for nearly 30 yrs. He is straight up honest so perhaps he had to tell Sally something she didn't want to hear. read more

Went to Steve the owner of the shop with my BMW which just came off factory warranty. Did not feel like paying the $1700 the dealer wanted to do the front and rear brakes. Steve first told me to wait until the brake warning light comes on to do the service. That got me an extra 1000 miles on my old brakes. Dealer said they had to be changed ASAP. I scheduled an appointment and dropped off the car. Steve took the car for a test drive both before and after servicing the car (he does this to all cars he services). Steve called me and told me that yes indeed both front and rear need to be replaced gave me a quote and that's exactly what it came out to be. Parts $720 and $240 for labor. He saved me over $700! and he uses only factory parts no cutting corners here. No charge for topping off fluids and giving the car a thorough inspection. What can I say? Excellent service by someone who's not trying to rip you off that's what I say. If you have a BMW or Porsche (the only cars he works on) I highly recommend taking it to Steve de Jung. read more

Steve has taken care of all my Bmw's (one at a time) and his service and he is skilled, honest and gives A+ service. Best mechanic i have found. read more

I have been taking my cars to Steve for over 15 years. Steve knows his cars. He is honest, thorough, and timely. He has never let me down. He is one of the best of the best! read more

most honest mechanic I have ever met. he's simply the best!!

Experienced a 'hard event' with my Porsche, called Steve De Yung who was pragmatic, assuring and quoted me a fair price over the phone. I delivered the car to De Yung Motorsport five days later strapped down on a flatbed truck. I had the car back two days after that and with a new water-pump, thermostat and at the quoted price. Steve inspires confidence! I told him I'd be back in October for an oil change and Steve said, "Drive the car, drive the car . . . The car is a low mileage 2001 boxster S. read more

I've known Steve since High school and have had a professional relationship with him for decades. He has always been sincere, straightforward and keenly on top of whatever automotive service or repair malady was afoot. We have all been around Yelp long enough to employ the Wanker meter when negative reviews ensue. ( Like JD's). I always wonder if the negative person's last 15 minutes were spent lambasting a restaurant for having their places settings not to their liking, or picking the wings off of flies, well, because they can. Sure, there is most definitely a need for the world to know about poor service, bad food, ad nauseum. On the other hand, a Troll's a troll. Bottom line is, Should you have a Porsche or BMW, deJung Motorsports is the place to go in the North Bay. My experiences: Steve's one sharp cookie when it comes to these automobiles, and he'll do his best to service your car in a timely fashion, for a very fair price. 2 Thumbs up !! read more