Excessive oil consumption on the 2.4L engine. GM has known about the oil consumption on these engines for a long time and if oil is not consistently checked and topped off it will seize the motor while driving

- Oak Lawn, IL, USA

The contact owned a 2015 Buick Regal. The contact stated that while powered off, a civilian observed smoke emanating from the engine compartment. The contact stated that the vehicle then exploded. The contact stated that a vehicle parked next to the vehicle had damage from the fire. The origin of the fire was unknown. The fire department extinguished the fire and a fire department report was made available. The manufacturer was not notified of the failure. The failure mileage was unknown.

- Tallahassee, FL, USA

I started experiencing excessive oil burn at around. Since then, I have checked my oil biweekly to top off and keep at proper levels along with consistent oil changes as the oil gets dirty quickly. Dealerships before have told me that its "normal" for these engines. I discovered a bad oil leak. Vacuum pump issues. Multiple camshaft seals worn away, that were hard as rock from excessive heat including piston seals that had been affected. Thought this possibly had fixed the excessive oil burn. A few weeks later I received the oil level low notification on the car computer. I check and its very low. The oil burn is continuing with no clear signs of an oil leak with dirty oil. There is possibly more problems within the engine that aren't seen. I have checked previous complaints. I notice that this engine has many of the same problems with the turbo package on GM vehicles. It has a rough idle and engine hesitation. These characteristics seem to include inconsistent engine performance sound and are felt through the pedals, the driver's seat and steering wheel, there is a putter and hesitates while accelerating.

- Wendell/Gooding, ID, USA

Engine has gone out twice within 54K miles. Service tech said this is a know issue with the 2015 Buick Regal engine. I just had it replaced the 2nd time in Feb of 2020. First time it went out there was only 12K miles on it. Now its Nov. Of 2020 and the car is having the same exact issues as it was when both engines went out. I cannot believe this is happening a third time. This is not fair as a consumer to purchase a new car with barely any mileage and the engine keeps going on. I was on the freeway the last time. Worst possible timing ever. This is like a never ending really expensive issue

- Las Vegas, NV, USA

I started experiencing excessive oil burn at around 85,000 miles. Since then, I have checked my oil biweekly to top off and keep at proper levels along with consistent oil changes as the oil gets dirty quickly. Dealerships before have told me that its "normal" for these engines. At 109,610 miles, I discovered a bad oil leak. I took the vehicle into an independent mechanic to diagnose and fix the problem. He determined that the vacuum pump had broken off into the engine which caused a seal problem for the top of the engine. As he opened up the top of the engine to remove the broken pieces, he noticed multiple camshaft seals that had worn away, that were hard as rock from excessive heat including piston seals that had been affected, he repaired them all after ordering the replacement parts from Buick. Thinking this possibly had fixed the excessive oil burn, I stopped checking the oil levels. A month and 1,000 miles later, I received the oil level low notification on the car computer. I check and its very low. The oil burn is continuing with no clear signs of an oil leak with dirty oil. There is possibly more problems within the engine that aren't seen. Checking previous complaints. I notice that this engine has many of the same problems with the turbo package on GM vehicles.

- San Jose, CA, USA

The contact owns a 2015 Buick Regal. When the vehicle reached a complete stop, the vehicle stalled and the engine power reduced warning indicator illuminated. The contact had to turn off and restart the vehicle for it to resume normal operation. The vehicle was taken to anchor Buick GMC (1 automotive blvd, elkton, md 21921, (443) 406-4623) where it was diagnosed that the vacuum pump, camshaft, and camshaft sensor failed and needed to be replaced. The vehicle was repaired; however, the failure recurred multiple times. As a result, the contact had to purchase a loaner vehicle. The manufacturer was made aware of the failures and offered $100 towards the repair costs. The failure mileage was approximately 97,341.

- Rehoboth Beach, DE, USA

On 10/10/2018 at 6:45 am, 63 degrees Fahrenheit, certified/current lpt warranty/15' Regal prem 2/ 60,600 od 2.0L/turbo/automatic trans, conditions-speed-10 mph-steering straight, brake at 100%, engine performance issues manifested during the end portion of the trip while in drive, at idle, dropping off friend at his workplace parking lot. Trip characteristics-total trip 35 min at 20 total miles-first part of the trip at 45 mph for 15 min/the middle part of the trip at 70 mph for 12 min/end portion of the trip at 15-25 mph for 6 min/idle at 2 min-engine performance-sudden onset of high, rough idle or engine hesitation? characteristics seemed to include inconsistent engine performance sound and feel felt through the pedals, the driver's seat and steering wheel, brake pedal depressed at 100%, immediately after moving the automatic transmission knob from park to drive, engine temp within normal parameters, gas level 35 miles till E. in drive, accelerator at 15-20%, drove 35 mph for 5 miles to a shell gas pump, shifted to park, brake depressed at 100%, depressed on/off engine button, engaged the electronic parking system, max fueled vehicle with high-grade unleaded fuel. Vehicle sat, unstarted, for 15 min after fueling. Drove to the autozone across the street, 1 mile/20 mp, experienced a mil coming on solid in the ip while parking the vehicle. Obtained mil printout read: "cylinder 4 misfire detected"/"ase certified master technicians have seen this issue on your type of vehicle and the most likely solution is: Perform engine de-carbon procedure"/code P0304. At present: On start-solid mil, rough, high idle at 1500 rpms, after 1-2 min-mil, tcs solid, rough idle at 1000 rpms. Drivability at all speeds affected but less so at higher speeds, *significant lurch at 15-35 mph feels like hard shift/intermittent. I changed oil/air filters, driven 2 miles since parking at residence.

- Laveen, AZ, USA

The contact owns a 2015 Buick Regal. While stopped at a traffic light, the vehicle began to putter and hesitate while accelerating. The failure occurred randomly. The dealer diagnosed that the engine fractured and needed to be replaced. The vehicle was repaired; however, the contact heard a grinding noise. The vehicle was not diagnosed or repaired. The manufacturer was notified. The failure mileage was approximately 50,000.

- Shelby Charter Township, MI, USA