JM Performance

John is the greatest! Always takes good care of my Audi and is honest and fair!

Before I got a new car, I took my 2001 Saturn to John consistently for years. Engine repairs, body repair, electronics. They do it all. John is as straightforward as you can get. No BS. No matter where you live in LA, JM Performance is worth the trip for expert auto work and straightforward business.

You’re reading it all over this page, but John is the best mechanic in the San Fernanado Valley, possible in LA County. John has been our family mechanic for more than 20 years. He’s been my parents’ mechanic, my older brother’s mechanic, and now he’s mine. John is truly in this business because he wants to help people, not to make a buck of an easy mark. He’s incredibly knowledgeable, very helpful, and he’ll give you an honest assessment of your auto and its problems. In short, he’s the man. Give this guy your business — he deserves it, and you won’t regret it.

I’ve Been using JM for 10 years. The most honest and dependable mechanic I have ever met. Hands down. Mechanical and body work. He does everything.

Seriously, everybody needs to have this guy as their mechanic. EVERYONE. John works quickly and is the most honest guy you could ever leave your car with. I look forward to my car having a problem so I can say hello to John. The guy is hilarious and, maybe, the last honest mechanic in the city.
A+++

I’d taken my car here once about a year ago. John does not try to upsell you on anything. He is honest; if you don’t need something changed, he won’t coax you into doing it. The only problem may be that John is understaffed. Call ahead of time to make sure he is available to fix your car once you bring it in.
Called about my friend’s car door, looking to get the price on part and labor for worst case scenario if she had to replace the entire door handle. John called me back with the price and labor that beat all the other places I’d called (though his part might not have been OEM, what he charged for labor beat out the surrounding competitors). After telling him it may not even been an issue with replacing the entire handle he quickly responded with a problem with the inside latch that gets worn down over time span of 5 years, replaceable with a $ 1.20 part. He went on to say it’d be stupid to replace the entire handle if it was just for that part. Said if my friend stopped in that he’d take a look at it free of charge. Now that’s service.

I had a Unilocal account ages ago, but never reviewed businesses so I closed my account. However, I still trust Unilocal users’ opinions. I felt compelled to reopen my account after having the pleasure of meeting John. This man deserves 5 stars.
I was preparing for a world of trouble when my car wouldn’t start when I got off work. My battery was brand new, so I was worried. I assumed it was something very serious and very expensive, as my car is 11 years old and has never once had a single problem, let alone not starting up at all.
I had my car towed to JM Performance. I was greeted by the ever smiling, John. He had me write down my name and phone number, as there were several vehicles ahead of me. So, I had my ride whisk me away. On the way home, I remembered I left some items I needed in the car, so we drove back to retrieve them. Well, when I arrived, John had my hood popped up and my car was running! I was amazed. What could’ve been the miracle he worked?
My coolant, brake, and oil fluids were 0%. I had 1,000 miles left before I was due for an oil change. I was shocked. I paid someone at a Valvoline to refill my fluids nearly a month ago, and I was lied to. I assumed I was in good hands, and definitely was not. Brake failure is serious. He also diagnosed and cleared the ‘Check Engine’ light. Being an auto-​mechanic-​cynic myself, I was so impressed.
I got my car back in perfect condition within 30 minutes. As another reviewer said, I felt I underpaid John but I tipped him because I felt he was entitled. At any other auto repair shop, being a woman in a rough economy, I would have been suggested a bunch of services I don’t need.
I will never take my car anywhere else! Big thanks to John and fellow Unilocalers!

What can I say, John Mas is a genius when it comes to cars. The thing I really liked about him is that he doesn’t waste your time. He tells you what needs to be done, how it’s going to be done (which I find pretty cool since I have limited knowledge about cars), and how much it’s going to cost you. Other places I’ve been to in the past, were almost the complete opposite. I’d ask them what the problem is, and they’d give me a vague answer, which I found very annoying.
I can honestly say that any time I have a problem, this is where I am headed. Go down there and see for your self what I mean when he explains everything to you about the problem (s) of your car.

Called and asked John for an estimate over the phone. He got my information and said he would call me back with a price. I was on the phone with Joe from At Your Service Auto Repair and let his call go to voicemail. Left a voicemail saying to call him back for an estimate. When I did, I got a voicemail.
295.22 incl tax — 1 yr 12 000 warranty
$ 197 — 80 labor — 18.22
John
7am — 5pm
Half a day to do the work
Not bad — had it not been for Pep Boys giving me a better deal, I would have brought my car here.

I found JM on this site. I was looking for a reliable mechanic to get the brakes done on my Jag. I can’t rave enough about JM and John. I went in for an estimate, which was easily $ 100 less than two other places I went to. I made arrangements to drop off my car the next morning to have the brakes done. Not only did John drive me back home and pick me up when the work was done, he got it done ON TIME! I was very impressed with the overall experience. Thank you John! Hopefully my car won’t need anything else done any time soon, but if so I will be back.

John is great. He gave me the straight news about my car without wasting my time, and only charged me $ 20 for the diagnosis. He even gave me some great advice about how to get a good trade-​in value on it!

I NEVER trusted a mechanic until I met John Mas. I’m so glad I found him on Unilocal!I would drive 100 miles to have this man fix my car. Luckily he’s just down the street :) I know it’s been said before, but he is truly the most honest mechanic you will ever meet. The first time I went to him was to repair another mechanic’s mess– I left my car with him for a few hours and he took care of everything and I actually left feeling like I had UNDERPAID him. How often does that happen?! Great mechanic!

I brought John a 65 Plymouth Valiant convertible with a few … issues. He took his time, he did not over charge, he kept me informed, and he did what he said he was going to do, when he said it.
He figured out and fixed a problem with a convertible top hydraulic system (that two other mechancis had told me to replace) and installed an after-​market shifter, after spending a day trying to find me a second-​hand one at pic-​a-​part. (Two other shops had offered to re-​build my tranny for me…)
He also specializes in MOPAR repair, complete rebuilds from the frame up, and just «making it work.»
Honest guy, good value for money, and no hesitation sending him both my most motor-​head friends and my Mother (who has never popped a hood).

John Mas, owner of JM Performance has to be the most honest mechanic in the country. John truly believes in karma and that if you are dishonest to someone, it will come back to haunt you! John will shoot straight. He doesn’t claim to be a specialist at all aspects of automobiles but he has a small group of people he works with and trusts — he has a transmission guy that is trustworthy, a tire guy who is honest and reliable, etc. I have recommended JM to AT LEAST 50 people, males, females and even companies. 100% of the time I am thanked for sending them to John. Mechanics can be notorious for taking advantage of females in the car repair world and John, being the father of two teenage daughters treats ladies as though they were one of his own. He is respectful, explains things in simple ways and for those who don’t understand the inner-​workings of cars, he makes it all make sense without being condescending or patronizing.
John’s assistant Enrique is a magician when it comes to any body, paint and electrical work. Truly an artist.
In short, no one touches my cars (or my wife’s) except JM Performance. John understands my busy work schedule and limited time and I can leave my car with him and he will take care of everything. take it be smogged if need be, transmission work, etc. He’s a one-​stop shop. When John cannot fix something as you’d like it to be he will tell you. He told me on my old 4Runner that I was about to start giving him a lot of money to keep it running and that I should sell it while I could. I asked how long he thought I had and estimated 6 mos. 5 mos later I started having issues. I traded it in on a new vehicle.
ONLY con, JM isn’t open on the weekends — they are family men and spend the weekends with their families which I’m not going to fault them for! Making your schedule work during the week is by far worth every penny and peace of mind!

John has been my mechanic for over 4 years. He’s helped me when I had and accident that wasn’t my fault, and only fixes what is needed… there are never any «mystery» charges and he always explains to me exactly what is wrong and how it will be fixed. You won’t find a more honest mechanic.

John Mas is the best. What’s great is that he is honest and just a great mechanic who uses the best and appropriate parts. He’s too busy to nickle and dime you as he just works with himself and another mechanic. He just wants you to get taken care of. I’ve been going to him since 1995 and now he has moved to:
JM Performance Auto, 14 623 Aetna St,
Van Nuys, CA 91 411
(818) 779‑7741

There IS such a thing as an honest mechanic! John Mas of JM Performance is the most down to Earth man. I sent all my family members and friends there. John only uses dealership parts. He explains in detail what he needs to do BEFORE doing it. JM could have made a fortune off me because I really don’t know anything about cars, but John would never recommend any maintenance just to screw me out of money. He is quick to say «I have daughters and wouldn’t want anyone to take advantage of them». He’s a good guy and an honest mechanic! If anyone is in need of one, I highly recommend stopping by JM Performance.