• http://madsaver.com Mac

    I recently bought a competitors device that does the same thing, and it’s o-k. It does the job, but it won’t be used that often. I got it because my car went into “limp mode” when I accelerated too quickly. If I use the device within the next day or two I will get a few error codes. Then I check online to get a very short description of the error code. After that I google each description and I get some advice from other users who ran into the same issue.

    According to my research, my car was experiencing a popular issue and I was going to have to spend $400 to replace a part on my Sonata. However, my father-in-law took a look at it, proceeded to tighten up a screw and the issue was completely resolved. Interesting. So this device CAN be useful, but you’ll end up having a mechanic looking at the car anyway.

  • viga

    Car MD appears to simply be a low-end OBD II code scanner. Similar code scanners have been on the market for years.

    Simply retrieving a code is not enough information to resolve an issue, however. That said, it sounds as if this product comes with some potentially interesting access to technical information provided by ASE certified mechanics. I would hope that this information would help people avoid…say…replacing the sensor indicated by the code versus actually finding and fixing the problem that’s being indicated by the sensor. However, without access to the information that comes with the product, I can’t say how good that information really is.

  • SeraAnna

    I purchased the Car MD after reading about it’s Edison Award win. I cracked it open for a friend whose Check Engine light went on. It was so easy to use and so empowering for 2 women to be able to diagnose a car issue. As it turned out her gas cap was not on tight enough and it caused the light to come on – who knew??? It saved her a trip to the dealer and convinced me to buy another Car MD for myself. So cool!!!

  • Brian Boyce

    I got a CarMD for this last christmas and it seemed like a such a great device! I used it when shopping for a used car for my daughter. Like you mentioned, I was able to make a better decision in which car to get her, to see if there were any hidden internal problems with the car. Such a great device! Right now the CarMD sits in my daughter’s glove box and i have some peace of mind knowing she has a device that can help her understand her car just an arms reach away.

  • martha jarreta

    First of all credible repair shops don’t employ mechanics, they employ technicians. What’s the difference? A mechanic changes parts a technician diagnosis the problem and fixes it. As for the diagnostic charge”” that shops charge is because the have to pay a tech to scan the car, pay for the scanner itself, pay for electric, and pay for everything else they purchased so they are able to work on vehicles. Have you ever priced quality tools and equipment? Also most of the repair shops that I know only install the parts they purchase due to warranties and such. So my advice would be to install your own part if you buy it at the DIY (aka Do It Yourself) store. Bringin you own parts to a repair shop is like taking your own hamburger to McDonalds. FYI if your vehicle has an error code more than one thing could be wrong with it. Also with all the new hybrid cars you should seek out a qualified shop or you could end up costing your self way more money in the long run.

  • Andy Robinson

    Save your money and buy a unit that can reset the Check Engine Light. CarMD is only a code reader and cannot reset the light. What good is it to know the problem, fix the problem and still have the light on.

    • K Sook

      My maintenance light was on for my oil change (which I do myself) and was tired of always having the light on even after changing it. I looked through my Honda Accord car manual and they had detailed descriptions on how to turn the lights off. You could check your manual before you buy the unit.

  • not given

    I thought you could reset the check engine light by unhooking the battery, then hooking it back up.

  • cubical

    You can reset the light by disconnecting the battery,keep in mind that will also clear the trouble code.If the problem still remains the same code will be sent to the computer.

  • http://www.autocarpetpros.com John Ferris

    to martha jarreta : Is it not politically correct to call a mechanic a mechanic anymore? They are now a technician?? I guess I have missed the boat. It seems that someone has rattled your chains and may have insulted you based on you telling them what is on your balance sheet, electric, labor, rent etc.

    I bought the car md, use it on all 4 cars and go to youtube, find the video I need and I will usually fix the problem myself and save $75 for a diagnostic and $80 an hour to fix it and not come home with something else wrong.

    Why is it every time I go see a technician I have something else wrong when I get back home? Interesting isn’t it?

  • Vic

    I got a OBD II code scanner at Amazon for twenty bucks and can reset. The problem is these scanners is they are dumb ,they read codes, not troubleshoot those codes. For example a mechanic will get a code, replace the offending part and still get the code. Then he finds the real problem…a short! Your out 400 bucks!

    Happens every day!

  • Kira Botkin

    Engine knock has nothing to do with the engine not being secure in its mount! It is called knocking because it makes a sound like someone rapping on a metal door, not because it is knocking around. Knocking occurs when the air/fuel in one of your engine’s cylinders is not igniting at the right time. It can destroy your engine if it keeps happening which is WHY you have a sensor – you should definitely take your car in!! It does degrade your fuel economy because the cylinders aren’t getting the boost they need to be the most efficient they can be, so they need to use more gas to create the same amount of “go” – but also if it keeps happening a lot it can damage your engine. You might also want to have the transmission checked out if your acceleration is bad from 30 and above or it seems to be hesitating before changing gears.

    I own a car computer that I bought for about $70 off Amazon – I agree with Vic that it just reads the codes, you have to do some research to find out what is going on, which it sounds like CarMD will help you with. But sometimes it is simple to fix, or you want to find out if this is something catastrophic that must be dealt with immediately, or if it can wait until payday. :)

    Ours has paid for itself several times over, not least because both my and my boyfriend’s Pontiacs got Check Engine lights that we checked with it and fixed ourselves The code for both cars was for air entering the fuel system – and while a mechanic would have run an expensive fuel system diagnostic looking for leaks, we thought we’d at least try the cheap solution which is to replace the gas cap. (The seal can go bad and let air in.) We spent $20 on each gas cap, solved the problem, and saved a $200+ visit! If you try this, make sure to get one from a dealership that is specifically for your make/model of car – some car models can actually tell if you got a cheapo one from Auto Zone and will “reject” the cheapo gas cap.

  • Erik Folgate

    Wow, thanks everybody for the tips! I’m definitely not too much of a car guy, and I am still a little skeptical if I want to replace this knock sensor if it costs hundreds of dollars, but maybe i should after reading Kira’s comments.

    I think these little code reader tools can be helpful to help prevent catastrophic collapse of your car, but for the most part, they aren’t necessary if you get your car checked out regularly. It’s just nice to have a heads up before the mechanic starts giving you their laundry list of things you should have done.

  • Matt Breed

    It’s funny, my co-worker was saying just the other day that she had to take her computer in to have it looked at. I know a bit about computers, but am definitely no expert. I told her that regardless of whether there actually IS something wrong with it, they will find something…not unlike taking your car in to have it looked at.

    Luckily, I have a lot of friends that are very computer savvy, I wish I could say the same about vehicularly-inclined friends. If you don’t trust your mechanic, you NEED a new one.

    • Toms


    • Valcour


  • Sharon Lear

    I purchased a CarMD in February for my son in law. I found he already had a reliable system check, so I called the same day and tried to cancel the order. They said it had already been shipped. I got a return slip to ship back UPS. Proof was shown they received back at CarMD in 3 days. This was the first of March. I have called they 4 times, but have not received credit to my credit card. Each time they promise to return it, but no credit yet. I highly recommend you do not buy this product!

  • Green_onions62

    I’ve read all of comments, but i still have yet to read one on trouble shooting, Transmissions
    does the CarMd covers the whole car system?.

  • Anonymous

    I’ve order one for myself and to be honest I’m sold on the idea of have a friend by my side to help along the way to make a long story short here: I’ve a 2000 saturn sw2 it has about 167,00 miles on it and honestly I’m a budget here now what saying without a computer like this carmd its going cost me about 75 to tow it to a shop pluse a other 100-150 to finger out what wrong with it and honestly here I’ve aldy now something is stuck in the transmission and the waterpump is miss up and stater screw up and do be honest its going to cost me more to fix it then its worth but with carmd i can know what is wrong with it in detail and could finger how much its going to cost to fix it but honestly its trash and I’ve a 2011 honda fit sport and I want me make sure its running at pick performance level at all times so say the lease here i think everyone should have one

  • Trevordeo

    I order two CarMD and did not work no respond I made many calls/email,s no one contacted me so I returned them 4 weeks ago still no answer they took my money I think it is a scam

  • Tis

    I bought CARMD two months ago. It already save me money huge. I take it with me on vacation and just around town. Thanks CarMD!

  • Anonymous

    I purchased the CarMD, Did NOT work. Not much help from the techs I talked to, returned product and received another which also didnt work, could not get past step 2, I did finally talk to someone and he said “cant help you, nothing we can do to fix the problem” returned the product and they didnt refund the shipping, I do not recommend this product.

  • Ar

    They say they have a money back gurantee, can return for any reason and a refund will be issued. What a crock! I returned a unit 2 months ago, still waiting for my refund!!!!! The keep saying sorry you should have it in 7 – 10 business days. Still no refund. This unit doesn’t detect as many issues as the TV add says it does, for the money don’t buy!!!!!!!!!!!!!!!!
    Your local auto zone can hook up a scanner to help you diagnose problem free of charge!

    • WarnerRobins

      Just wondering if you’ve now received your refund?

  • Mkflagg

    not happy at all

  • bakedpotato

    CarMD reads what is stored on your cars computer, that’s why you don’t start the engine, just turn the key to the on position.
    As far as diagnosing a transmission problem, well probably not but I don’t know that for sure. Try reading the information on the CarMD website and see if there’s any information about what exactly CarMD can and will diagnose.
    As far as engine knock goes, maybe try a tank full of high octane gas instead of the 89% low octane and see if that helps with the engine knocking.

  • Anonymous

    I really like my CarMD. It alerted me to a recall notice on my 07 subaru. It was actually pretty critical and involved leaking oil and fire!

  • Rob

    I bought one and wish I had my money back so I could by one I could use as much as I wanted too. This code reader is limited to 6 uses per month and I own 5 cars! I also don’t like having to go online an register the car and have to get the vin and milage to find out the code. What a rip-0ff.

    • Suzderra

      geez I feel like a moron for buying it…..it didn’t diagnose our dodge ram fuel filter problem and we got stuck for many hours waiting for a tow truck…….we have many vehicles and two left us stuck on freeways waiting for a tow truck….this stupid thing didn’t diagnose anything

      • Suzderra

        listen 2 their commercials: a guy says ‘cadillac’ convertor……can he just be literate and say :catalytic ??? if you have people on commercials misstating words than how good is is your product?

  • Lskoebli

    Maybe this product has some useful purposes but it certainly is not any good as far as doing a “PINPOINT TEST” on your problem. Must be done by a qualified technician with the proper testing equipment. Diagnostic testing is often the most time consuming part of your car repair.

    • Smworlow

      plus now car md is advertising on the low end channels…just a bogus company..dont fall for their crap

  • Suzderra

    just a few words: don’t buy it

    • bdkennedy11

      An explanation as to why would have been helpful.

  • Copie

    After months and a lot of money trying to fix
    Issues with my car, I purchased the CARMD
    The day I receives the unit it CODED 2 problems
    After fixing them, WE HAD NO MORE ISSUES

  • http://www.facebook.com/eric.leevon Eric Leevon


  • http://www.facebook.com/eric.leevon Eric Leevon

    The same service is available at most national chain parts stores. Pep Boys, AutoZone, O’Reilly’s, Advanced, NAPA, Carquest all offer a code reader service that does exactly the same thing. The difference? It’s free from the parts store. As for the TSB “service”, enter the make and model of your car into any search engine followed by TSB, and away you go.

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