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Engine & cooling

2015 Buick Encore Engine problems

Owners have filed 32 complaints about the 2015 Buick Encore's engine & cooling with NHTSA - 26% of all its complaints, most recently on July 29, 2026. Stalling, loss of power, oil consumption, overheating, head gaskets, timing chains and engine failure.

Complaints
32
Recalls
0
Crashes
0
Fires
0
Injuries
0
Deaths
0

Engine complaints

Engine & cooling

Weber road auto service replaced the engine using county PRC and out-of-pocket funds, and the newly installed used engine has an active engine oil cooler leak, creating an immediate vehicle fire and sudden engine stalling hazard. Also there's a leak at the ac compressor, condenser and coupler valves. This was discovered by Buckeye Auto Service. No repairs have been made as first shop keeps brushing me off.

Filed Incident EngineNHTSA 11753438
Transmission & drivetrainEngine & coolingFuel system

The turbo in my vehicle has a check engine light come on and than the engine does no act right. The repair shop that looked at car stated that the manufacture knows this is a known issue and they have not made a recall as several cars my year range has this going on. If this is a known issue why is there no recall. I worked had for my car and I can not afford the repair of a know issues with the turbo as it cost a lot and I should not have to cover this as it is apparent this is a manufacture defect that is known....

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It puts me as risk as the car is not preforming properly and it jumps and does not go properly when it has the issue arise. I will get hit for not going after I come to a stop and will not accelerate properly. This issue appeared 2 months after I purchased the car and I took it to a shop who told me he has tried to contact Buick to cover the repairs for others and gets no where. I think that the manufacture knows and will not repair something that is not the owners fault but there shafty part and they know this as it was a recall in other years of my vehicle.

Filed Incident Power train · Engine · Fuel / propulsion systemNHTSA 11746663
Engine & cooling

The contact owns a 2015 Buick Encore. The contact stated that while depressing the accelerator, the vehicle hesitated before accelerating. The contact became aware of oil underneath the vehicle on the driveway, resulting in a complete loss of power. The vehicle leaked oil and lost the vehicle lost power twice. The check engine warning light was illuminated. The contact inspected the vehicle and determined that the mass air flow sensor had failed. The MAF sensor was replaced twice, the Oxygen sensors were replaced three times, and the turbocharger was replaced once. The failures persisted. The manufacturer was not informed of the failure. The failure mileage was unknown.

Filed Incident Engine and engine coolingNHTSA 11687354
Engine & cooling

check engine light came onforP0299 code and heard that there's a lot of vehicles with turbos having this problem

Filed Incident EngineNHTSA 11679703
Engine & cooling

Leaking oil from oil coolant pipe under car and timing chain or belt gasket blowing oil.i have seen on Google in 2016 a stop update on 2015 had issue with the s02ame problem.

Filed Incident EngineNHTSA 11639035
Engine & cooling

The contact owns a 2015 Buick Encore. The contact stated that while driving at an undisclosed speed, there was an abnormal sound coming from underneath the vehicle, before the vehicle lost motive power. The contact was able to pull to the shoulder of the roadway, where the failure persisted. The check engine warning light was illuminated. The vehicle was taken to an independent mechanic, who diagnosed a failure with the catalytic converter. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was unknown.

Filed Incident Engine and engine coolingNHTSA 11627505
Transmission & drivetrainEngine & cooling

The contact owns a 2015 Buick Encore. The contact stated that the vehicle was sputtering and jerking while attempting to accelerate while driving at various speeds, and while the vehicle was idling. The check engine warning light was illuminated. The vehicle was taken to the dealer where it was diagnosed that the catalytic converter had failed and needed to be replaced. The vehicle had not been repaired. The manufacturer was informed about the failure and confirmed there were no recalls on the VIN. The manufacturer referred the contact to the NHTSA Hotline to report the failure. The failure mileage was 86,600.

Filed Incident Power train · EngineNHTSA 11611564
Engine & cooling

Massive coolant leak. Been happening on and off since I bought the car in nov2019. Taken to several shops and have had replacement done and it goes right back to leaking. This time the shop believes it's leaking into the engine itself.

Filed Incident EngineNHTSA 11571192
SuspensionEngine & coolingFuel system

It's it's firing and shaking, and I have kept up on the oil changes. It's a lot of money

Filed Incident Suspension · Engine · Fuel / propulsion systemNHTSA 11554626
Engine & cooling

It seems like the 2015 Buick Encores are having a lot of the same issues. I do not see a recall for any of these issues. 1. loss of power when trying to accelerate. This has almost caused an accident for me. I had plenty of time to pull out, but my car wouldn't speed up. Thankfully the car coming up noticed I was having issues and slowed down. This also may affect the performance and fuel efficiency of the vehicle. No warning lights came on. It eventually corrected itself and I was able to accelerate. This has...

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been an ongoing issue. Nobody seems to know what is causing this or how to fix it. 2. I start my car and put it into gear, and it shakes like it wants to stall. I quickly put it back into park and wait a few minutes before putting it back into gear. It also does this while I am waiting at lights at intersections. That is very concerning because if i stall mid intersection this could cause and accident and or injury to me or other motorists. No lights appear when this happens. Again, nobody knows why it does this or how to correct it. 3. Back of my car stared chipping paint for no reason. There was no trauma to cause this to occur. Apparently, this is another common issue with this car. I've read that there have been lawsuits against the company for using paint similar to what this is doing. 3. I had to replace my engine under two years of having it. It was still under warranty at the time, but I hadn't had the car very long at all.

Filed Incident EngineNHTSA 11549826
Transmission & drivetrainEngine & cooling

The turbocharger on my car is failing and had a verified check engine light code PO299. The car is a 2015 with low miles, only 53k. This is an obvious manufacturer defect/defective product with an estimated cost of $1500.00 to replace, according to an ASE independent auto shop I use for all my vehicles. The car is unfortunately not under any warranty anymore, to my knowledge. There is no recall on this part but online on Buick forums and other credible sites, you will find owners of the same exact car reporting...

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independently, the same failing part issues. I am the second owner of this car and bought it used in 2021 from Carmax. Since then, I have spent $$$ to fix random necessary repairs that are defects of the car but not on recall. Recently, the ac went out and that was over $500 alone. Prior to that an 02 sensor and sparkplug went out, etc. I want GM to reimburse me for the repair cost of the failing turbocharger on this low mileage vehicle as it is without a doubt, a manufacturer defect needing repair to prevent the engine from failure and a total loss! I contacted a GM/Buick agent and formal complaint and request for reimbursement. I am now waiting for up to two days for a "senior agent," to contact me back and discuss further options, if any. Until then, I am without a car with two kids at home and this defect is unsafe and a financial burden to me and my family. This is a known issue on this vehicle model and should be covered under a recall from GM!

Filed Incident Power train · EngineNHTSA 11532768
Engine & cooling

The PVC valve was frozen and leaked oil everywhere. I was told by a mechanic at my dealership that it is a known issue. They want $3000 to install a heater unit.

Filed Incident EngineNHTSA 11505584
Electrical systemAcceleration & cruise controlEngine & cooling

My car started surging when I was sitting at a traffic light and as I was crossing abridge The check engine light came on - 2 codes - transmission module 0700 and module 0073

Filed Incident Electrical system · Vehicle speed control · EngineNHTSA 11499335
Engine & cooling

The contact owns a 2015 Buick Encore. The contact stated that while driving at an undisclosed speed, the engine revved and he was unable to shift the vehicle into the intended gear. The check engine warning light was illuminated. The vehicle was taken to a local dealer, where it was diagnosed that the turbocharger needed to be replaced. The contact referenced TSB Number: PIP5495H for the turbocharger. The vehicle was not repaired. The manufacturer was made aware of the failure and advised the contact to file a complaint with the NHTSA Hotline. The approximate failure mileage was 79,000.

Filed Incident Engine and engine coolingNHTSA 11497643
SteeringElectrical systemEngine & cooling

Have had the car in the Buick dealership numerous times to get these things fixed. Each time was told it was fixed and I paid for parts and labor. 1. Engine Light keeps coming on. 2. traction light keeps coming on. 3. Power steering goes out 4. Press on gas and have to floor it in order to just crawl to a place to stop. 5 Hard jumps after stopping at a light Have had this in to Tasca Buick and each time they say they fixed it - then it happens less then 2 weeks later. Have told them this car is going to kill...

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someone with the steering going out while driving. I have a 2015 beautiful Buick Encore in the drive that I cannot drive. I am 77 years old and can't just walk. I don't know what to do. I have tried taking it in to have it fixed and it keeps doing the same things. It is definitely available for inspection. This has happened numerous times since I have had the car. Not just on one date - numerous dates

Filed Incident Steering · Electrical system · EngineNHTSA 11445454
Electrical systemEngine & cooling

While driving, I received a call that routed through the Bluetooth hands-free system. Within seconds of receiving the call, the entire system seemed to blitz out and shut the car off completely. Luckily I was not going fast and was able to glide to the side. I lost almost all the ability to control the car. If this had been on the freeway it wouldn't have ended as well.

Filed Incident Electrical system · EngineNHTSA 11445387
AirbagsEngine & cooling

Drivers airbag light stays on - immobilisation light stays on, car won't start. Both of these issues were addressed by TSB and complaints

Filed Incident Air bags · EngineNHTSA 11443646
Engine & cooling

I I bought used 2015 buick encore base has 102,000 miles on it bought it on may 30, 2020 and already have engine light coming on code says turbo bypass valve checked with mechanic says it will cost at least $ 1,600 to fix

Filed Incident EngineNHTSA 11355675
Engine & cooling

Engine has 66,164 miles on it, it is using 1.4 Quarts every 1500 to 2000 miles. I've kept maintenance on time! Had to add oil and at 68,132 miles had to put 4 quarts in this is second time. I'm told its all buicks are doing this? $12.00 Every 2000 miles? Engine light says on! Napa - prodemand read out. This suv is on city streets

Filed Incident Unknown or other · EngineNHTSA 11321842
Electrical systemEngine & coolingFuel system

I purchased this vehicle in 2017 with only 45,000 miles, 1 year warranty was purchased. I have had constant issues with tires, but more seriously I have had over $2000 in repairs for intake manifold, air conditioning, various issues with tires, repaired thermostat. I had an ignition problem repaired in 2019 and now the check engine light keeps flashing, the motor doesn't want to engage and I am in fear for my life that I will be on the highway and it will just shut down, causing a collision!

Filed Incident Electrical system · Engine · Fuel / propulsion systemNHTSA 11298433
Acceleration & cruise controlBrakesEngine & cooling

Tried to stop before a red sign on a city street, the car accelerated on its own, passed the red light and run at about 60 mph on a 35 mph street for about half a mile and then stopped by itself. Pressing the brakes and even putting it on park did not help. I am lucky to be alive with my two passengers, and lucky not to kill anybody or cause property damage.

Filed Incident Vehicle speed control · Service brakes · EngineNHTSA 11243404
Engine & cooling

Plastic valve cover warped at/before 83809 miles, leading to vacuum leak/loss of power.

Filed Incident EngineNHTSA 11241881
Transmission & drivetrainElectrical systemEngine & cooling

Driving car locks up check engine light comes on says check power steering, we aimed to side of the shoulder car dies wouldn't start.We had to wait on side of a interstate for 3 hours to get a tow truck, very dangerous

Filed Incident Power train · Electrical system · EngineNHTSA 11235058
Engine & cooling

Tl* the contact owns a 2015 buick encore. While driving 60 mph, the vehicle started to hesitate, the temperature gauge began to increase, and the check engine warning indicator illuminated. The contact parked the vehicle on the side of the road and then took it to autonation chevrolet north richland hills (located at 7769 boulevard 26, north richland hills, tx 76180, (817) 264-7753). The dealer diagnosed with multiple unknown failures, including an oil leak. The vehicle was repaired, but the failures continued. The manufacturer was not notified. The failure mileage was 95,000.

Filed Incident EngineNHTSA 11222732
Engine & cooling

Tl* the contact owns a 2015 buick encore. While operating the vehicle, the check engine indicator remained illuminated. The vehicle was taken to garber gmc (5255 us-1, fort pierce, fl) where it was diagnosed that the engine turbo charger was faulty and needed to be replaced. The vehicle was not repaired. The contact was informed that the part needed to repair the vehicle was not available due to high demand. The manufacturer was notified of the failure. The failure mileage was 30,000.

Filed Incident EngineNHTSA 11218483

Buick Encore engine complaints by year

Encore engine problems, every year

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Source: U.S. National Highway Traffic Safety Administration (NHTSA) complaints and recalls, checked . Complaints are owners' own reports and are not verified. How we use the data

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