Tuner beware! Long story short, I like these guys but they are sloppy. we spent over 6k paying them to re-fix things they had fixed. Things they billed us for doing, weren't actually done resulting in diagnostic confusion and the car undrivable for 9 months. After the 3rd time "fixing" the car, we brought it directly to another shop that was astonished by the sloppy gasket goop and unbolted and loose hardware. Everything service they had provided is now being fixed by another shop. Long story we needed them to replace a headgasket on a 90s import which required dropping the subframe. we supplied headgasket and asked if there was anything else needing to be replaced while engine was out, to go ahead and do it. They did the repair and on the drive home, blew a coolant line and overheated. this required head remachining and new gaskets again, we also bought a coolant line kit and asked them to replace every coolant line so this wouldn't happen again. They didn't install everything and told us we were good to go and you will never guess what happened again. Also we had them install a new ecu which required switching 2 wires in order to work. They never switched the wires and then retuned the car upon their insistence, the car was unable to keep idle with the tune they supplied. Then this time, we had to send the head to a special machinist. once getting it back we took it directly to another shop. they showed us that they hadnt rebolted all the motor mounts and there was huge amounts of RTV gasket maker everywhere and they hadnt used the gasket kit we provided. The car had a grounding kit which they cut and let the wires dangle in place without removing or reattaching. The valve cover (unused provided gasket) was leaking oil everywhere and filling the spark plug wells. when we called them about it, they said they would fix it but were "really busy right now" so we called a month later, they scheduled us for a month after that and dropped off the car. we would call every week or so asking for a status update and the excuses started flowing. we were next up on the lift for the next 4 weeks. until we decided, another shop would be a smarter option. Giving them the benefit of the doubt, I brought my honda to them because the fans weren't coming on. The first time they fixed it, it was not fixed. brought it back and even brought a new radiator, all the sensors etc, Still not fixed. I personally think they are all great guys but I cant have them work on my cars anymore.

BEWARE!!! I brought in my vintage VW for a break job, and an installation of three new gauges, the car had (key word HAD) a working charging system when I dropped it off. on week later I picked it up the gauges seemed a little off, but Jeff the owner told me to drive it for awhile and then come back. OK didn't take long to figure out his "technician" knew NOTHING at all about air cooled VWs, the breaks were not fixed properly (found that out at 75 MPH...Fun Times) the gauges crapped out with in the first 20 miles and now my generator was not charging the car, battery drained in 20 or so miles (coincidence...probably not). anyway brought it back to him and JEFF sent it to another shop that actually knows about VWs (passed off the customer due to incompetence) and this guy is going to charge me $600.00 to fix what wasn't a problem before JEFF's shop got a hold of my car. all in all $1,100.00 paid and I am worst off than when I started (grand total $1,700.00 and I am back where I started.) When asked to see what could be done he told me in a pleasant tone that it was not his fault or problem and to basically GFMS. Jeff seems pleasant and honest but WATCH OUT just another snake in the grass. I am not the only review like this

This is by far my favorite auto repair shop. Justin, the owner, is incredibly knowledgeable and provides outstanding service and communication. I use CarTune for oil changes and all repairs. Once, my car wasn’t starting and due to work I didn’t have time to diagnose it or even drop it off during the day. I dropped the car off after hours, hid the key and left a voicemail, and they had my car ready for pickup with a new battery by noon the next day. Most recently my engine seized and I had the car towed to Cartune after hours. Justin put in some time trying to diagnose it. Once we figured out that the problem was a defect in my model covered by an extended warranty (after Subaru settled some lawsuits over this issue), I towed the car to a Subaru dealership. Subaru requested all my service records, which Justin immediately sent via email. The charge for diagnosing the problem, receiving the tow, sending the tow, and emailing me my service history (all by phone, I didn’t go to the shop once) was $50. These are real car guys who care about the vehicles and their customers. I love my 2014 WRX wagon and would trust these guys with any level of repair. Highly recommended.

Although I didn't get anything done with them besides a inspection these guys were awesome. They were brutally honest which saved me money in the long run. I came in with what I suspected was a blown head gasket and they confirmed but it was worse than I expected. At first they told me I would need to replace the motor so I asked their honest opinion on if it is worth it and if they mind inspecting the rest of the car. They did a visual check of the chassis and everything. After said inspection they told me it isn't worth replacing the engine and they suggest getting rid of the car because of all the rust. They price of the motor swap labor and parts was less than $6k. I thought it was a great price for a motor with only 30k miles on it.

The service provided by Car Tune Independent is exceptional. Both David and Justin display a high level of professionalism and expertise. They are not only friendly, but their prices are also reasonable. Whether you require wheels, tires, alignment, suspension, or any other service, they will ensure you're taken care of. I've been here twice now for car work, and I intend to remain a loyal customer due to their transparent approach. They offer comprehensive services and, in my opinion, stand out as the top choice in San Diego, CA.

Charged me over $400 to recharge my A/C. Didn't even address the actual problem I came in for, which was the zone control functionality (always blowing hot on one side). I ended up buying the $50 vent flip part and installing it after about 2 hours of research online. Writing this review after I realized they also broke both of the glove box toppers so now when you open the glove box, everything just falls on the floor. Left me worse off than I started and after a massive over charge. Absolutely ridiculous.

OUTSTANDING....Impressive repair performance and GREAT customer service provided by these expert technicians (Justin, Ricky and Ridel). This car performance is like new again. The engine got replaced!!!! and all systems superbly performed to include the ECU (re-flashed/reprogrammed) when tested. I will never try another repair shop/technician again. Thank you so much for bringing this car alive and well again. You guys are my heroes!!!!BZ!

Justin and his team are the best! Very professional and knowledgeable. They were straight forward with me, told me what I needed, what I didn't need and gave me a price quote. Guess what? When I went to pick up my car, the price was the same as what they quoted me. They aren't in the business to screw you over. They want repeat business. I can respect that.

After struggling with another local shop, I next went to Cartune to get a pre-purchase inspection on a car. Their price wound up great, infact it was too good so I paid a tip on top in advance. They knocked the job out of the park and really helped get some quality information on the car to help me make an informed choice. 110% recommend them.

Finding an honest auto shop is hard to come by, but these guys are probably one of the most honest you can find. I come here because I trust them with my car. I come here for regular service maintenance as well as installing custom parts so I know these men are knowledgable on many aspects of a vehicle.

Great experience lowering my 2018 Infiniti at cartune!! Shoutout Justin for taking the time to dial in my suspension and camber to the exact settings I wanted. Checkout pictures of the finished product on my ig @seandon.89 Defintely reccomend and will be visiting for future modifications! Thanks Cartune

These guys always take care of me when I am in San Diego. They do quality work and they aren’t happy until I am happy. I have been getting my mods done with them for years on my old Nissan, my GTI and even my Prius! Thank you Justin and the guys working their butts off during this pandemic at Cartune!

The guys at CarTune Did a great job!!!! I Had "ALOT" of work done on my 2007 Honda Ridgelind, Dropped it of on Thursday and it was done Saturday with no appointment and a great price. To get the same work done at the dealer would have been twice as much money and a week or more out.

I have been taking my cars to this same shop since before it became cartune, same great people.. just got a dc5 type r k20 installed in my fa5, just have to clean her up and continue my restore. But drove car home yesterday, felt amazing. Talk to Justin hes been there for awhile

Justin and the crew here are super down to earth and are passionate about what they do! The guys got my car in the shop very quickly and fixed my alignment issues that had been plaguing me. If you are looking for quality work and friendly service definitely come here!

I had a great experience with these guys. Went in for them to fix a problem on my Z another shop had created and they were able to diagnose and fix the issue the same day. They kept me updated throughout the whole process and were very professional.

Awesome men in this shop....they work quickly and they don't waste any time with deception....thank you Justin for fixing and addressing things on my Porsche panamera that San Diego Porsche and Amatos auto shop could not repair....wow I was amazed

Justin was very professional and knowledgeable! Car Tune Independent service repair AC system on my car fast and professional with very competitive prices! I recommend this Auto shop everyone! Thanks guys! And see you next time!1 Vic.A

Brought my car here for many reasons. Everything from a downpipe install to a steering wheel install and wiring, even coilovers with an alignment. Whatever problem or aftermarket parts you need installed they can handle. Greatly recommend

Taken my car here for all 5 years I've had it. They are amazing guys with a passion for their craft. They know what they are doing and what they are talking about. There is a wonderful professional yet family-like atmosphere here.

Amazing shop, Rydell took amazing care of my car and got it aligned perfectly (even if the parts I installed were kinda janky lol) 100% going back for all future work I need done. Amazing staff and great work being done.

Excellent service, great pricing, knowledgeable staff and quick service....thought I was going to leave my 2013 vw overnight but Jistin called me only a few hours after I dropped it off.....awesome clean work....cheers!

Quick and efficient. Their prices won't bankrupt you and they are very professional. My fiance and I have had an absolute nightmare finding a trustworthy mechanic so we feel very fortunate to have found them

Hand's down the best shop I've used in SD. The techs clearly take pride in their work and the customer service is way more than I have come to expect from a performance garage. This place is no joke.

Fast service, friendly, didn't treat me like I'm stupid or take advantage of me, and I don't feel they overcharged me. David gives great customer service, even if he talks really fast.

They went above and beyond what I expected, straightforward and honest, they will for sure have 100% of my business. Thank you Geoff, Justin, Jasmine and to all that worked on my car.

Man, I've been coming to CarTune for a long time , pretty sure it's been a decade already. Always got a solid crew looking to professionally and independently get projects done right.

A+ service trustworthy and quick. Jeffro took care of my car the same way I would if I had the same knowledge. Thanks for my microsquirt guys can't wait to get the truck running

CarTune is the real deal. Probably the only shop you may ever need for your vehicle. Honest people, family vibes, and a shop that gets the work done. What more do you need?

CarTune Auto Repair is the place to service your car! The Crew is extremely knowledgeable and always willing to help. Jeff and Justin take pride in the work they do!

By far the best place to take your car. Expert service with friendly people. Plus they do there best to get you the best price and not add unnecessary products1

Just referred me to someone else. Called 10 businesses that day to get the run around. My issue isn't uncommon so not sure why I can't find someone to fix it.

These guys are honest, efficient and affordable. Every single one of them is super friendly and knowledgeable from the moment you call. Highly recommended!!

I trust them to work on my car and I recommend them first to all of my friends that need something done on their cars, be that motor swap to HID install.

These guys are the best mechanics in San Diego! They truly love what they do and they give you honest feedback. Keep up the awesome work!

Best car shop period if you ever go and ask for David awesome guy and tell them Sergio sent you I service my red subie there …

Marvelous shop, the people, all totally professional, team players, excellent mechanics…they’ve put up with our relics for many years

Justin & his team are outstanding in customer service, knowledge, honesty, & work performance. They've won my business!

Very friendly very professional very helpful, have done plenty of work on my car and helped me out alot

Cartune is the best. They always take care of my car when it has problems for the best prices.

Always friendly and great work. I trust them and recommended them no matter what car.

Great customer service. Will definitely be doing business with again.

Always a great service and job quality work done here thanks you guys

Was great service. Looking forward to taking my car back as needed.

Justin and his team are the best when it comes to performance auto

Great place. They can align modified cars and they work fast.

They do great work and have excellent customer service.

Go see Justin if you want quality work on your import!

Bottom line you want it done right and no hassle. ....

A+. Respectful & honest. Tells you bout work prior..

Justin was a lot of help. Extremely knowledgeable.

Justin and his team did a great job as usual.

High quality work and great customer service

Good Service but really overpriced on labor

Great service couldn’t be happier!!

Best shop im San Diego hands down!

Great place for a tune

Professional guys.

Trustworthy