I made a call to them for a quote, they gave me a quote that was better than most that I found. I…read moredropped it off and they called as soon as it was ready. I found them to be very friendly, professional and reasonable. The car is repaiered and running perfectly. I will be a repeat if anything else goes wrong. (alternator replaced)

What went well? Everything! I couldn't believe how easy…read moreit was to book an appointment for today yesterday afternoon or evening or whenever it was. Drew and Rich (in alphabetical order, LOL!) were both very friendly and helpful; and happily, the technician was able to fix my tire He finished fixing my tire in just over half an hour!

Very professional and friendly. Excellent mechanics and do what they say. Very timely and their…read morecommunication is excellent. Recommend.

Brought my vehicle in due to a problem with the front tire. They charged me $2000+ and returned…read morethe vehicle with the front tire rubbing against the fender when turning, and the original problem still a problem. They charged me an additional $400. to repair their screw up. They treated me like I was stupid and the problem was my fault. As a young man I rebuilt engines and use to do my own mechanical work, so I understood the problem and what needed to be done. Stay away from these people.

I took my truck to this location and had a terrible experience. My truck had a transmission leak…read moreand they supposedly replaced the transmission filter and the gasket. The fix did not last long and it was leaking again. They said that they just needed to torque the bolt and it would be good. A few months later it started leaking in the same place. Since they could not fix it within 2 tries I was not going back. I took it to a place in Kennesaw where they looked at it and said that it looked like it had been torqued too much and had bent the cover. Now I had to pay for the full job again and a new cover and this only cost me $460 where as Chrisitan Brothers charged me $980 and messed up my truck. I contacted them and they told me that since I took it somewhere else to get fixed there is nothing that they would do for me. I think that they owe me the full amount that I paid them or at least the difference of what I paid at the Kennesaw repair shop and the amount that they over charged me. I will never go to any Christian Brothers again because I have now had another person that has said she went in for one thing and now they want to charge her over $10,000. STAY AWAY

Professional. Works quickly and knows his cars. I've never had a problem here…read more Easy Recommendation.

I really wasn't happy with the experience I was receiving at the dealership auto service, the…read morecustomer service was poor and the quality of work. I went to Google and Yelp looking for places that could service a Fiat and decided to visit German Maser Tech (GMT). I had recently moved to Roswell and thought the location was also perfect. The experience was night and day from the dealership.   GMT specializes in European car repair, including Audi, BMW, Fiat, Mercedes, Porsche, Sprinter, Volvo, and Volkswagen.   I contacted GMT and left a voicemail requesting an appointment, the next day I get a call back. This rarely happened with the dealership, I would have to call multiple times just to speak to a person. The guy I spoke to at GMT was very pleasant, and courteous and didn't' make me feel rushed, he answered my few questions and worked with my schedule. He also ordered some wipers for me and stated they would arrive by my appointment time. Awesome!!! It's been challenging finding wiper blades that fit my compact car at auto shops like Auto Zone and Sams.   The location was easy to find, and when I walked in I was greeted immediately, also very different from my dealership experience. The waiting room was very spacious and comfortable. I waited for 1 hour and my car was ready and I was ready to check out. I had a next service sticker placed on my vehicle which is a nice reminder. It was more expensive than the price I pay at the dealership, however, I'm willing to pay a little more for better service and not have to worry about if my car actually had an oil change.   I immediately noticed the difference in my car, it drove so much smoother and it was nice to hear all looks well.

Contacted Poston my phone to schedule services. Went in for a brake check as front brakes original…read more My car had approximately 85 k in predominately highway mile so it was time. Front brakes were needed. opted for new rotors. Did a few other things that were due & coolant, differential, transaxle, they hedked my a/c too. clear communication, organized shop, fair pricing.

I am really glad I took the time to read up on local mechanics and found Poston. They gave me…read morestraightforward, honest answers about issues with my truck transmission after another local shop misdiagnosed the issue (and charged me for a lead frame for it when the trans was starting to go bad). Brad pulls no punches and spends time breaking down the options - and this is what I do in my line of work to my clients - here are your options, here are the risks with with one, you make the decision that fits with your risk tolerance. Ended up having the whole transmission replaced and very happy with the work, not to mention they did some extra stuff to the truck and made a few more suggestions on things to keep in mind down the line. Prices were very fair, and they communicated really well with me about all the things going on. So good work, fair prices, good communication - and no upselling at all. What is not to like? I will bring all my family vehicles here moving forward, they earned my business because they earned my trust.

BEWARE!!! These people are crooks with a smile and a soft spoken voice!!!…read more I took my BMW M760i to them because BMW had my appointment way too many days out and I couldn't wait that long because my coolant leak started getting worse. I called and GCR had me scheduled the next day to drop it off in the morning at 10am. Right before closing they called me to inform me of what they found and I couldn't believe it so I drove up there immediately in my other car to get this paperwork in hand. Mind you, I just bought this car in August 2025 and had it thoroughly inspected before purchase by another company and all was immaculate, literally had to get new tires and we all know dealers will do a lot before sale of a vehicle so he went half on them with me and I was fine with that. It is now January 8, 2026 and German Car Repair(GCR) is telling me and I quote "You have 2 cracked radiators and multiple leaks, 3 of them". They even supplied pictures with diagrams and markings showing the leak spots. The cost to fix this (according to these GCR crooks) would be $5025.06 to "REMOVE AND REPLACE MAIN COOLANT SYSTEM RADIATOR AND HOSES"(literally copied and pasted from their invoice and it lists all kinds of things) This is right before closing so I step out to see if my mechanic Shawn( BMW certified guy that's been working on my other bmw for years at his shop in kennesaw) can clarify some things for me. Since my car was still drive able and not running hot or anything I simply paid them for their diagnosis fee and left my vehicle in their parking lot in which another employee kindly backed it in a spot for me until later when I can pick it up or get it towed if I decide. I picked up my car that night and scheduled a tow (I live in Alpharetta and my mechanic is in kennesaw so I didn't wanna drive) for the next day to my mechanic. This was on a Friday so I knew he wouldn't get to me until Monday because he doesn't do weekends. Shawn told me I DO NOT HAVE A CRACKED RADIATOR!! The main hose that runs on top of it was leaking real bad so if you just looked at it you would think it was leaking but that's why you do a pressure test to make sure. A PRESSURE TEST GCR WAS PAID TO DO!!! I was so relieved but then became pissed because these folks really just tried to rob me with a soft tone and a freaking smile!!! Shawn does my repairs, the old faulty hoses and control arms because they were worn out bad and my total less my extended warranty of $750, $1466.74 and that was because it cost me $245 to tow it to him( I got charged an extra $100 by the tow company because I was sleep when they first came out and I like them and it's just business). That price is significantly lower than GCR price of $5025 just to fix the coolant leak!!!! They wanted more than I paid to fix both issues to just fix the control arm bushings!!! After picking my beautiful M760 I from the mechanic and driving that long drive home, I decided to call GCR to ask them why would they try to rob me like this because I thought you guys were a reputable company? This guy had the nerve to tell me they never said I had 2 cracked radiators. They only suggested that I replace them probably due to age or something the technician saw but he can't be certain unless he speaks with the technician. What a F&$&@ng joke!! I stated that clearly a pressure test was not done because why would I need to replace 2 radiators( main radiator and low pressure radiator) if they're not leaking? Again he states he doesn't know but he knows that is what's required to fix my issue. The diag fee is only $88 so it's not gonna break the bank at all. I suggested that in good faith they should at least refund that and he stated that they checked 3 different areas and the fee would stand. Mind you I really don't care about the fee and just wanted to hear his response. I say "if you didn't do a pressure test which is what is required for any kind of leak then the job was not done properly and I should be refunded". He stood firm and offered to check my car again for "free" and of course I immediately decline!! Why would I want you scam artists touching my car again so you can actually break something worth 5 grand this time? No I will hard pass. I know this was long but BEWARE OF THE TYPE OF PEOPLE AND ALWAYS GET A SECOND OPINION! Mechanics are shady people so it's imperative you find one you can trust!!!

Stellar service from A to Z! My Audi Q3 decided to act out at the worst possible time: right before…read moreChristmas. Called GCR as a new client to ask for advice and availability to have "the grinch" (aka my car) inspected and repaired. Chase answered my call and assured me that I would have the Audi inspected before the year end and that would cost under $100. The towing truck dropped off "the grinch" in GCR parking lot right before closing on December 23rd. Sometimes around noon on December 30th I received a very informative text message from Chase saying that the GCR tamed "the grinch" and the car is ready for pick up! Invoice was under $100, as promised and included complimentary service! Not only that I was not being taken advantage of (which most auto repair shops would do trying to upsell not needed services, unfortunately), but I was provided with meaningful insight that can save me a lot of grief in a long run! Ethics and service quality are a rare find nowadays, hence sharing my positive experience with GCR team. Kudos to everyone and special thanks to Chase for sharing not just his above average professional expertise and customer support skills, but also his incredible kindness towards a tired customer rambling in distress. Chase's understanding and patience made a world of difference to me. I'm grateful for your help and I'll confidently be a repeat customer (hopefully just for regular maintenance, rather than emergencies). Respectfully wishing GCR Team a prosperous new year 2025 in harmony and heath! Y'all rock! Cheers!

Great, Great Great!! After gettting the run around from…read moreall the BIG BOX repairs and hundreds of wasted dollars. I found someone honest and truthful!! Thank you liberty!! referrring friends daily!!

Great staff and service. Honest pricing and work that you can trust. Definitely the best place to…read morego!

I have been coming to Killian for a few years, to get my oil changed and one minor issue. Friendly…read morepeople and quick service. I was just there to have my front rim and bent tie rod replaced on my semi new 2025 Genesis. To not hit a dog I turned away from it and slid into the curb and damaged my rim and bent the tie rod. Killian did a great job, but Genesis was faulty on the tie rod. They sent the wrong part due to a wrong part number that they acknowledged. All in all was a great experience, and they did not charge for their loaner car.

Great service. Having problems with my brakes from another shop and they were able to identify it…read moreand get me back on the road. They were able to identify another issue so we are working on that!