2014 Mazda CX-5: sudden loss of power

Filed Feb 25, 2018 · Driver assistance, Engine · 54,000 miles · NY

I was driving on a main road and all of a sudden it seems as if the car lost power (2014 mazda cx-5 grand touring). I could not accelerate and a lot of the lights on the dash lit up (TPMS, traction control, check engine light). Thankfully I was only a mile from home and was able to turn around and make it home, but I could have been in a serious accident with my infant in the car as I was about to get on the highway. I was only able to go about 10 MPH, car kept revving, sputtering and vibrating. Once I got home I shut the car off for a few minutes. It starts no problem but same lights keep flashing and I feel the whole car vibrating, I don't feel safe if this car. This is a serious safety issue, car is only 3 years old with 50,000 miles on it, it is not normal for a car to completely lose power to the point where it almost comes to a complete stop. Mazda needs to issue a recall before someone gets into a serious accident because of this!

Filed Sep 15, 2017 · Electrical, Engine · NJ

Vehicle lost power and would not accelerate, check engine, tmps and traction control lights illuminated on the dash. Luckily didn't happen on a highway. Ignition coil and spar plug were replaced. Car mileage 48000, spark plugs should last to 75000 miles according to manufacturer.

Filed Aug 14, 2016 · Driver assistance, Electrical · 53,000 miles · MN

No issues leading up to this point with my cx-5. Went to start the car and all the dash lights illuminated and remained on. As I began to drive, I attempted to use the right hand turn signal and the warning lights flashed rapidly as the electrical system, bluetooth, navigation, and entire engine shut off. I stopped the car, put it in park, and tried restarting. When it did, half of the warning lights were on in park, including the service engine light, and when put in drive the rest of the lights came back on. I tried the right signal again (in park) and the same issue occurred, with the end result of the engine turning off. As I drove with these lights on, new warnings came on and off, including loss of power to my steering(making it more difficult to turn), ABS, speed monitoring, tire pressure, blind spot monitoring, horn, and basically anything else controlled electronically. I ran the codes and got long list, with most of them being connected to loss of communication. Some codes were: u0121, p0500, p0685. I took it to the mazda dealer, and after 2 hrs of diagnostic there were unable to find the problem and said they would need more time (and money, obviously). From reading other blogs/comments with the similar issue, seems to be a faulty ground wire. This is something that is extremely dangerous and seems to be occurring a lot in this model. Mazda needs to address this issue asap

Filed Apr 1, 2016 · Driver assistance, Engine · 55,000 miles · WA

I was traveling about 35mph up a slight incline when the engine lost power and started shaking. The traction control system, tire monitoring, and check engine light all came on at the same time. The engine didn't have any power even when I pressed all the way on the accelerator I couldn't get it to go any faster than 45mph.

Filed Jun 22, 2015 · Fuel system, Transmission · 10,978 miles · GA

Turning into interstate entrance ramp, vehicle accelerated normally up to about 40 MPH, then lost all power even though engine raced. Switched auto trans to manual mode and display was blank where it should have shown current gear. Coasted onto shoulder and shut off ignition. .... After a few minutes, started engine and issue has not recurred.had noted a smell as of burning plastic for several miles prior to this incident... Following day, dealer found "what looked like carpet debris wrapped around speed sensors" and removed it. They found no other problem......current mileage is 14,590 and problem has not recurred....updated 08/12/15 *bf updated 12/23/2015

Filed Mar 18, 2015 · Acceleration, Electrical · 33,000 miles · KY

Bought a 2014 mazda cx-5 back in november 2013.up until december 2014 and 33k miles, no issues. Second week of december, was entering the highway and decided to accelerate a bit , got up to about 80 MPH and let off the gas.that's when all of a sudden the engine light, traction light and TPMS came on.car lost power but was able to pull off to the side of the highway.sounded like it was running on 3 cylinders, pushing the gas pedal, car wouldn't go. Shut the car off and on and performed like normal.took it the dealer to have checked out.they couldn't replicate the issue and says it was my k&n filter I had, which is false since I've had the filter for the last 20k miles on the car and another 30k on my 2012 mazda 3.let it go then the following did it again and but this time it happened twice in a row and the engine light stayed on.got the code of p0301 which is a cylinder 1 misfire issue.take it back again and they keep for almost 3 weeks. They finally got the car to do shut off. Replaced fuel injector with no luck.ended up replacing the crank pulley and belts and say it's working.they also replaced the battery because they said it died and had a bad cell.pick the car on a tuesday evening and sure friday morning did it again!! Already called mazda customer support and got a case number set up. Dealer "says" mazda wanted me to take a tech out to replicate problem, which they can, why they want me too, I have no clue. Sure enough the day I take it to the dealer, it did again on my way there. Tech scans the car, sees the same codes and prints them out. Couldn't get the car to shut off again, so I wait. The following week, call mazda customer support and say the dealer said no codes were found, bullcrap!! Complained to the dealer service manager and he "says" that mazda knows the problem, software related but no release date. I'm done and fed with mazda and the dealer.

Filed Apr 10, 2014 · Transmission · 550 miles · WI

On 3/31/2014 I test drove a 2014 mazda cx5 at a nearby dealer. When coming up an onramp to a 4 lane divided highway the car lost all power. Roads were dry with good visibility. The engine was running but no power was transferred to the wheels. Pressing the accelerator had no effect. I was attempting to move out of traffic as I was almost stopped when the power returned. This was not a hesitation it was a total loss of power and had I been in nose to tail city driving I would have caused an accident. Believing that this was a defect in this particular car I bought a different cx5. The car performed flawlessly for about 60 miles, but two days later I had an incident just like the one described previously, this time on a us highway where I did have to move onto the shoulder and stop. Conditions again were as described above. This time the incident was more extended with two more less severe incidents before I arrived home. I contacted the dealer and asked them to come to pick up the car as I did not feel safe driving it. They were not able to replicate the problem and analysis showed no remarkable codes. I finally dissolved the deal feeling that I could never feel safe and secure in this vehicle. The fact that it occurred in two different vehicles was too much for me to trust this model. I purchased a different brand. If this is in fact is a transmission failure it is sure to cause an accident in the future.

Filed Feb 17, 2014 · Acceleration, Driver assistance · 10,903 miles · MA

Upon entering the highway a car came up on me very fast, whereupon I floored the gas pedal. The car jetted forward to about 65 MPH then suddenly lost all power; like it was functioning on one cylinder. I had to pull over and coast down to my max speed of 5-MPH. Even though the pedal was floored I could not get above 1000 rpms and 5-MPH. Various warning lights came on, including the tcs and engine lights. All warning lights remained on without flashing. Once I got to a safe place I shut the car down and within one minute restarted it with no sign of a problem. I drove over 100-miles today and nervously had to passe someone, but without problem.

Filed Dec 18, 2013 · Electrical, Steering · 6,300 miles · AZ

Loss of power steering at same time all dash icons lit up. Car then momentarily shut off doing 75mph; lost headlights (during night). This continued numerous times. Headlights started flashing on/off and right turn signal caused car to shut off. Towed to dealer next day and almost a week and they and mazda engineering have no clue.