Great Service ! Tim is the Best' Major Issue with my GLi. Brake booster n Master cylinder out. He gave me option on using him to repair as well as Sound advice. Of course i went with him- glad i did. 2 day turnaround n my Car is Running like a Champ ! Thank you Tim read more

Hands down Tim and his whole team are amazing! My family and I have been coming for years. Very honest shop!! And great service! I definitely recommend coming here!! 10/10!!! I recently brought in my Mercedes C300 and my car was fixed and ready to go from one day to the next super fast service much recommended! read more

Nothing but compliments can be said about Tim, I brought in a Bmw and he was completely honest about what was wrong with my car and wouldn't take a penny from me. I don't ever write yelp reviews but I just had to for Tim, I HIGHLY recommend him for his honesty, and amazing work ethic. read more

Yes I had them check out my clk350 when I bought it and they did a thorough check and told me everything that was wrong with it and how much for repair and compared it to the dealer so much cheaper and a more personal touch to it all my work gets done here from oil change to any major work I trust him with getting the job done right at a reasonable price. Thanks Tim read more

Tim was incredibly reasonable and his staff were very helpful and friendly. I brought my car in for a repair it needed to pass smog. Tim not only completed the repair, he also asked me to come back to make sure the car was ready to smog. My car passed smog and the cherry on top was I saved a bunch by going here. Awesome experience all around! read more

Tim is the best Mercedes mechanic we have ever found. Honest, hard working, fair prices and a good listener. Do yourself a favor and have your car serviced there. read more

My wife and I recently reached out to Tim after getting my car inspected at a local dealership. Thankfully, he was able to take our car in that day. He looked under the hood, confirmed the issues and actually showed us, kept the car overnight, got the work done, and got it back to us the next day. The issues under the hood were taken care of and it was running very smoothly. He was also very helpful in charging us less than the estimate from the dealership. In short, Tim is knowledgeable, clear, helpful, friendly, and an absolute professional. Bonus: Tim's assistant Vicky is awesome! Had some nice convos with her. Thank you Tim and Vicky! read more

After being ripped off and misdiagnosed by a backyard mechanic Tim at Autowerks diagnosed the true problem and expeditiously fixed my vehicle as he knew I had to get it home from San Diego where it broke down to Northern California and even called the next day to make sure so had gotten home safely! Outstanding customer service by this team! Thank you, Theresa Olande-Rivie read more

My family and friends have been loyal customers to Tim (Owner) for more than 20 Years. His honesty, reliability, years of experience and excellent quality of work have always been very consistent over the years. When he diagnose our cars, he provides a detailed recommendations or advise you what needs immediate attention or which ones can be revisited. He explains to you the problem and walks you through every aspect of the repair. He knows that every transaction can be costly, (especially for the type of cars we own) so he gives you his very honest opinion. I'm always very comfortable with each process, always a great sense and value for my money, which is very rare nowadays. Your Safety is of outmost importance to him. Tim is the most highly skilled, hardworking professional and honest man you will ever meet. I'm proud to call him "family and a long life friend". May God Bless You Tim and Wishing You the Best in Life and in Business. My Best to his knowledgeable and very skilled Staff as well. PS. Tim's assistant Vicky, is the most gracious and genuine person you will ever meet. I would give her a 6 Stars !!! read more

As a small business, it's important to rely on a really good mechanic. For one man van, it could be a nightmare on downtime. Tim the owner of Underground Autowerks makes sure to return the vehicle as soon as possible. Tim is very honest, humble, reliable guy and most importantly doesn't BS... I highly recommend Underground Autowerks to friends & family! read more

Brought my TDI in after the turbo went out. Extremely professional and courteous experience from the staff. Tim could not have been more helpful or considerate of our time and situation. Went back for a timing belt change a couple weeks later after shopping around a bit. His price was by far the lowest and he never tried to sell me on anything or talk over my head about what he was doing. He's got all of our business from now on. read more

Called in to schedule an appointment for my mercedes, and was told to call the following week, called the following week then was told again to call the following week. Guess what happened when I called the following week? You guessed it, told to call back the following week. Basically getting the classic run around, and it's very unfortunate. Best thing to do is to be direct and say, 'hey, your problems are more than we are able to manage, and politely decline services. read more

second time taking my car here for oil change and headlight fixing and once again fast and very efficient work. Tim was clear with me since the beginning with pricing & timing. Thank you ! read more

The owner of the shop, Tim, did not respond to my letter or email regarding problems I had with the work that was done. So, don't expect any thing good to come from dealing with him. read more

I had my car towed to this place after reading a few reviews it sounded like they were honest people and my car would be fixed correctly...well to my surprise I was charged 4000 for nothing because my car still has the check engine light on and it's not running correctly and nothing was done that he charged me for but only one thing and that's the headlights. After my husband. Picking up my car from underground he noticed that the car was doing the same thing. So I made an appointment at Mercedes in Kearney mesa, my car was towed to Mercedes and they checked my Mercedes' and diagnosed it that the car needed an alternator and new ignition coils, something that I specifically told underground to check. Instead they focused on my dam headlights. I had to pay Mercedes' 2800 and car drove find after that. It still needs ignition coils replaced, but I feel that underground should give me some of my money back for doing nothing to my Mercedes'.... read more

Well had a new issue with our Bmw. Transmission problem. Once again Tim at Underground Autowerks step up. He repaired our car by working through the night and had it ready for pickup when the shop opened the next morning. Just amazing service. read more

I brought in my 2014 Mercedes which was leaking coolant. Immediately Tim was able to pin point the issue and was able to get the issue resolved. Tim and his staff were polite and nothing but professional. I am most appreciative of Tim's honest and how he did not try and inflate the price if I had gone to the dealership. I highly recommend Tim's shop at the National City location, as I'm sure the shop as I'm sure the shop in San Diego is nothing shy of being proficient and professional. Tim I look forward to working with you in the future! read more

I found this auto shop while browsing through yelp and Google comments. At first i thought the shop is located in a bunker? Based on its name I guess? I always check the business ratings before making the call. This place has lots of high marks and good remarks. Tim, the Owner and chief mechanic is so assuring of him being able to trouble shoot the problem(s) of my 2002 S430v MB. He definitely assured me that he knew such problems like what my car has. I called some reputable shops but decided to drop them from my choices since they all have that familiar saying "it is really hard to say until you bring your car over for me to look at. The diagnostics cost is $150". One of the shops I called even advised me to just give up trying to get my old MB fixed because it is not worth spending lots of money but instead call a junkyard and get at least a little something from it. But Tim assuredly told me that he believes he knows what's wrong with my car. That gave me the confidence to take his service and sure enough, I did not make a mistake. Tim is a gentleman in his approach. He updated me from time to time about the repair's progress. He really took care of my car from start to finish and was very resourceful in finding aftermarket parts for me to save a lot. Now the car that had been sitting for a couple of months in my garage totally out of commission seem like a happy car reunited with the roads and bridges it used to pass by. Thanks Tim for an excellent job! Also the price is well below the competition especially if compared to dealership prices. Oh by the way, the lady behind the counter running the office whose name is Vicky is so helpful and nice. She deserves my accolade too! Overall the service at Underground Autowerks is superb and deserves a 6 Star! read more

What a joke shop. Never spoke the mechanic after having it towed In or did the receptionist offer any prices for repair. Avoid this place like the plague. read more

Tim went above and beyond my expectations. He explains with great detail what is wrong with your car and happily shows you in the shop what caused your issues. His work is a reflection of his 20+ years of experience in automotive but his care about his customers exceeds what most can learn in a life time. He is fair and above all, aims to give you the best service possible. I visited several shops and Underground Autowerks is the only place that aims to save you money and does not upsell anything. My experience with Tim is nothing less than a solid 6 stars. To summarize my experience with him, I called the shop and requested a quote. He jotted down all relevant information regarding the car and would call back. In our second talk, he went out of his way to acquire a unique part I needed, had it shipped from Orange Country and managed to quote me at a little more than half the price of two other shops. He also explained with great detail how my issue arose (something no other shop did) and I happily set up an appointment. The thing about Underground Autowerks is that it didn't feel like a typical shop where you drop your car off, bend over and take a good one then pay whatever they want before you can say please be gentle. At Underground Autowerks, Tim will ensure you understand all options before proceeding and would aim to give you the best price and best service. Considering he saved me ~1200$, I have no plans of going anywhere else. read more

We took my girlfriend's VW Beetle to Tim at Underground Autowerks in National City after taking it to two other places. He diagnosed and fixed a complicated electrical problem right away for a very fair price. Now we call him the Volkswagen whisperer. Thanks Tim for a job well done! read more

My car suddenly stop starting. After several attempts by AAA on jumping the battery it was suspected that maybe it was the starter. Eventually i had it towed to Underground Autowerks after diligently searching for a reasonable but dependable service. I saw the great reviews and just desperate to have my car repaired. Tim called back and gave an honest estimate on the necessary repair on a Friday afternoon ordered parts and got the car ready by Saturday afternoon. Overall very pleased with the work performed. My car runs like a new car. read more

Great people and extremely helpful the past two times that I've brought my car in for repairs. Well experienced mechanics and staff. This is a shop that will go that extra mile for their customers. I dropped my car off to get repaired only to find out there was something a bit more major wrong with the car and it had to stay overnight. The mechanic was nice enough to help me locate the nearest rental car place and even offered to drive me there. I won't be taking my Bimmer anywhere else while I am in the area, these guys are top notch and definitely know their German cars. read more

Awesome shop! This is where I take my BMWs and VW for any issues that can be very complicated. Prices are very reasonable, all issues about the car are brought up front and they are provide an outstanding service. Thanks, Tim! read more

These guys were great! I had a dead battery on my VW Tiguan on a Saturday and these guys were able to do a 60K inspection and a battery change all without appointment. I got some good tips too about my car and how it compared to other vehicles in its class. So glad i found a mechanic for my VW that is so much cheaper than the dealer! read more

I recently had my vehicle here for brake service and was quite impressed. 1st off the employees were kind and friendly. I was given an honest estimate and was not forced in to purchasing anything. The service was performed in a timely manner and the price was far more competitive than the dealership. I would recommend Underground Auotwerks to friend/family. read more

This place was awesome!! Had a diagnostic test done and they were honest and up front about the issues on my newly purchased Mercedes. I was able to take the car back to the dealer and use the diagnostic test to help resolve my issues. Thank you for the great service and report!! read more

I took my car to the Kearny Mesa location for a complete 90K service. Excellent, fast, honest and friendly. I would recommend them to all my friends - and I have. Tim is a great mechanic. - Thanks read more

I waited 2 months before writing this review to see if their work help up. I purchased a used pick-up and wanted to know what I was getting. These guys were kind enough to see me pretty much right away. They worked the vehicle over and gave me a comprehensive assessment after about 45 minutes. Two months later, I am extremely pleased that nothing new, weird, or disappointing has come up. They pretty much nailed every little item that I should expect. At the time, I offered them a tip for their quick and excellent service which they declined - saying it is just how they do business. I figure that if they aren't going to take $$ form me then, the chances that they would try to screw me on service is pretty much zero. I would definitely recommend their services. read more

Great work. Tim's understanding of my BMW was excellent. Great prices. Thanks Tim

The techs there are the best. They can solve pretty much any problem that is going on with vehicle. If you want honest and reliable work done on your car, bring it here. read more

i am 75 yold ,two weeks ago i bought me a 2008 toyota highlander,i paid less than the value of the car with no waranties that i had to sign,next day i go to start my car and i hear a loud noise coming ,i tought from the starter,bought on from auto zone same,i returned it and buy another starter from o reillys,after instaling the second one,still thesame noise,so called toyota,they wanted a 150.00 dollare just to look at it,i refused and tried seven different mecanics in san diego,was told every thingyou think about,needed a new engine,overhaul my engine,the transmition was no good,the cheapest price i got was 7,554.00to fix the car.very deppresed when i whent home i kept seaching on my comp,i found underground autowerks,since i am from greece ifigured to check this place.tim asked to bring the car next morning,i did that,TIM called me to come to the shop.he explained to me it was the time chain and he camshaft,that its not worth fixing it was too expensive since my car have 190.000 miles,tim advice me not to fix it,he said i can drive it for another40 to 50 tHousand miles,he put in my car 3 quatrs of oil,when i asked him about my bill,he said i dont ow him nothing,what can i say,honest people likeTIM d ont exist any more,i was ready to spend a few thousand dollars and put it on my credit car,may god bless this mecanic TIM,PEOPLE LIKE THIS DONT EXIST ANY MORE,THEY WILL ROB YOU BLIND,ALEXSIHA@YANDEX.COM 6192744024,,I JUST SOO HAPPY YO HAVE FIND THIS GUY FOR MY LUCK,THANK YOU TIM,UNDERGROUND AUTOWERKS read more