2017 Hyundai Tucson: misfire or rough idle

Filed Sep 7, 2026 · Engine · IN

Vehicle is losing a lot of oil. But there is no oil leaking on the ground. Upon looking at the safety recall, it says it might be fire hazardous. I noticed smoke coming from under the hood. Vehicle run rough and also hear sounds.

Filed Aug 24, 2026 · Engine · MA

I have a 2017 Hyundai Tucson with a 1.6 turbo engine, and I have been experiencing massive oil consumption. Oil is coming out of the tail pipe with occasional big puff of smoke out of the tailpipe. Skipping and hesitation during acceleration, rough cold start, I have previously had the check engine light on with a multiple misfire code. I changed the plugs and the coils, and it did not resolve the problems. I then took it to the mechanic, and he told me that the car has to go to Hyundai because these are known problems with my particular motor. I took it to Balise Hyundai in Hyannis Mass. and was told that they know about these motor issues but could not help me because the engine light was not on.' If the light comes on, then bring it back and we will check it out'.I was then told that any work performed would be my responsibility to pay for it out of my pocket. If it a known problem by Hyundai, then I think that a recall or something should be posted so customers are not stuck with a very big service bill. Any help to get my vehicle running the way it was designed to would be greatly appreciated. Apparently, there are no recalls or campaigns about these issues on my vehicle even though they are well known to Hyundai

Filed Jul 24, 2026 · Engine · IL

Car was driving weird Consuming lots of oil Check engine light flashing Took to mechanic where they replaced the spark plugs and ignition coils, cleared light. Issue was resolved for about a month. Rough idling began car begin to shake while driving. Took back to shop was told rod bearring problem. Upon research found out this is a COMMKON problem among Hyundai vehicles however my vehicle was not apart of the ‘affected batch’. Took to Hyundai and got a diagnostic where it was confirmed that a new engine was needed, for $9000.

Filed Mar 1, 2026 · Engine · FL

I purchased this car from drive time, and when told about a possible recall on the engine i asked about it. We were told that the issue had been resolved. Not even 10 minutes after driving it off the lot the engine started misfiring, we had done a test drive prior to purchasing this vehicle and nothing had popped up on the dash about any problems. We have been unable to get it looked at. I was not sure if a report should have been filed until now. i am unable to produce photos at this time

Filed Oct 1, 2025 · Engine · MD

the federal safety agency Complaint – 2017 Hyundai Tucson Oil Consumption, Engine Defect, and Branded Title I am filing this complaint regarding my 2017 Hyundai Tucson, which suffers from abnormal oil consumption and engine problems. In addition, Hyundai Motor Company internally “branded” the title without disclosure, which voided my eligibility for warranty coverage. These issues create both serious safety risks and consumer protection concerns. 1.Oil Consumption and Engine Issues •This Tucson has had oil consumption problems since the first owner, which I only discovered a year after purchasing the vehicle. •The vehicle burns oil excessively between service intervals, often requiring top-offs after just a few hundred miles. •Critically, the low oil pressure warning light provides no early warning. It only activates once oil levels are already dangerously low, leaving no safe margin to protect the engine. •On multiple occasions, I was unaware the engine oil had dropped to unsafe levels until the vehicle was already at risk of engine damage. •The engine makes knocking/tapping noises, hesitates under acceleration, and has rough idling when oil levels drop — all signs of internal engine damage that could lead to sudden failure while driving. 2.Hyundai’s Branded Title Practice •Roughly one year after purchasing from CarMax, I learned that Hyundai had internally branded the title in their own system due to oil consumption reported by the first owner. •This branding was never disclosed to me or to CarMax, and the official state-issued title and Carfax report both showed “clean.” •Hyundai uses this internal branding to void the extended engine warranty that should have applied to my vehicle. •Despite repeated requests, Hyundai has refused to provide documentation of when or why this branding occurred. 3.Warranty and Safety Concerns •Hyundai has issued Technical Service Bulletins (TSBs) and extended warranties for engine failures caused by piston rings and bearings

Filed Sep 26, 2025 · Engine · PA

My 2017 Hyundai Tucson has been chonking out and having acceleration problems. I thought it was because of AC running. When I took it in for inspection my mechanic stated it was misfiring. I am meticulous about routine maintenance (I.e. tire rotation and/or replacement, oil change, inspection, etc), as well as whatever if any repairs are needed. I immediately reached out to my local Hyundai dealer but they never responded. It should be corrected by Hyundai and a recall issued. After researching the issue I see I’m not the only one with a problem. The 1.6 L engine should have been recalled because apparently the same turbo engine in the GDI model was. I have all my maintenance records to support my claim. Come Hyundai!!! I thought you stood behind your vehicles?????

Filed Jul 15, 2025 · Engine · OK

The engine in my 2017 Hyundai Tucson Limited failed at approximately 111,000 miles. The vehicle began to run roughly, misfiring and losing power with no warning lights or prior indication of an issue. Within days, the vehicle became undriveable and had to be towed to a dealership. The dealership diagnosed the issue as a cylinder misfire due to internal engine damage caused by excessive oil consumption. They confirmed the only solution was a full engine replacement. I was told this issue is not currently covered by recall, despite its similarity to known engine defects Hyundai has recalled in other vehicles. This failure posed a serious safety risk. The vehicle stalled and lost power while driving, making it dangerous to accelerate or keep pace with traffic. Fortunately, the failure did not cause an accident in my case, but it easily could have in different circumstances. There were no dashboard warning lights, oil pressure warnings, or check engine indicators before the symptoms began. The oil level had not been excessively low, and the car had been well maintained. I have opened a case with the manufacturer, but assistance was denied due to mileage and ownership history. This appears to be part of a broader pattern of engine failure in similar Hyundai models. I am reporting this in hopes it contributes to further investigation and potential recall expansion.

Filed Jul 14, 2025 · Engine · IA

My 2017 Hyundai Tucson 1.6 liter is experiencing severe engine issues that closely mirror those subject to recent class action lawsuits. The engine exhibits excessive oil consumption. I have experienced a sudden loss of power on roadways in traffic as well as on the highway. This issue happened just today. Unfortunately due to a loss of smell, I have been unable to smell if there has been burning oil, however in between my last two oil changes (I only bought the car in October) I had to go it to get it refilled or refill it myself. I use full synthetic oil as well. I brought it into a reputable mechanic and I have been told if I continue to drive the vehicle the excessive oil consumption will lead to premature engine failure, potentially causing a dangerous stall or accident, putting myself and other motorists or pedestrians at risk. The mechanic received codes P0420, P0300, P0302, P0303, and P0304. They were able to conclude oil consumption based on the low amount of oil in the vehicle, the spark plugs being oil fouled, the misfiring on three cylinders, and the P0420 code. I called customer service, the Hyundai dealership in Clive, IA, and the contact for the class action lawsuit and litigation II. I was informed my VIN number was not part of the current recalls or class action, however the symptoms are identical to those widely reported. In the litigation my make and model are mentioned, Hyundai Tucson 2017, however it is listed as the 2.0 liter engine. My engine is mentioned, the 1.6 liter, in at least one other vehicle. I believe this vehicle was only excluded by a lack of representation at the time of the litigations. From my call with the dealership, and in research I am not the only one experiencing this problem. While I was lucky enough not to have been harmed, this has the potential to cause great harm. As someone who works for a DOT, safety first is in everything I do. I believed this necessary to report for the safety of all those involved.

Filed Jul 10, 2025 · Electrical, Engine · GA

The contact owns a 2017 Hyundai Tucson. The contact stated that while driving at various speeds, the vehicle made an abnormal clacking sound. The vehicle was taken to an independent certified mechanic, where it was diagnosed that the catalytic converter had failed and needed to be replaced. The vehicle was repaired; however, the failure persisted. The vehicle was taken back to the mechanic, where the catalytic converter repair was performed. The contact stated that after the repair, the contact noticed that the instrument panel would turn black and the infotainment system would become inoperable intermittently; however, both systems would reboot independently. Additionally, the vehicle was taken to an unknown dealer, where the air compressor was replaced due to heating system failure. The contact stated that the instrument panel failure recurred intermittently. Additionally, the contact stated that the vehicle was overheating. The check engine warning light was illuminated and the message "Engine Overheating" was displayed. The vehicle was taken back to the independent mechanic, where it was diagnosed with engine misfire. The mechanic determined that the head gasket failure had caused oil to contaminate the coolant reservoir. The vehicle was not repaired. The dealer was contacted and confirmed that the VIN was not included in a recall. The manufacturer was not notified of the failure. The failure mileage was unknown.

Filed Jun 24, 2025 · Engine · FL

While driving under normal conditions, the engine began misfiring and losing power. Inspection revealed that two of the spark plugs had suffered a broken ceramic insulator, which likely occurred during a pre-ignition or detonation. As a result, the ceramic insulators were pushed through the engine causing at least one of the exhaust valves to burn leading to loss of compression resulting in engine failure on the highway. This engine has no current recall, despite numerous similar complaints. Hyundai has issued detonation-related recalls for other engines (like the Theta II), yet the 1.6L Turbo GDI engine in this Tucson is also experiencing similar failures. At the time of this complaint there are 955 complaints in the NTHSA database about this vehicle with more than half citing engine failure issues — many of them sudden and severe failures while driving. This creates both a safety risk and an excessive financial burden. These failures occur without warning and can leave the driver stranded. It is concerning that Hyundai has not acknowledged a defect pattern, despite consistent failure modes being reported across this engine type. I am requesting that the federal safety agency investigate the 1.6L Gamma II Turbo engine for potential systemic detonation or pre-ignition issues that can lead to severe engine damage. A recall or special service campaign should be considered, and Hyundai should be held accountable to cover these repairs.

Filed Jun 23, 2025 · Engine · GA

The vehicle is experiencing severe engine shaking and misfiring during operation. Initial diagnostics confirmed that the spark plugs and ignition coils are functioning correctly and are not the source of the problem. A compression test revealed that two cylinders have no compression, indicating a likely internal engine failure. Potential causes include damaged or worn piston rings, valves, or a blown head gasket. This condition results in rough idling, reduced power, poor drivability, and potential long-term engine damage if not addressed promptly. Immediate engine repair or replacement is required.

Filed Jun 13, 2025 · Transmission · GA

While driving, the vehicle started knocking and jerking, lost power and began to run roughly. The check engine light initially flashed and then turned solid before the vehicle shut off. The next day, I took the vehicle to the dealership for a diagnostic after experiencing problems with knocking when the check engine light illuminated. The codes were P302 and 304 indicating misfiring. The diagnostic tech wrote the problem up as having oil in the cylinder and suggesting engine/turbo replacement for approximately $15,000.00. The engine has less than 100,000 miles. I asked about the 10/100. After inquiring about the recalls for GDI engines in the 2017 Tucson for rods causing engine fires due to oil leaking into the cylinders, the service agent stated that it was only the 2.0 and not the 1.6 with recalls. I said sir it is the same issue: high oil consumption, sputtering and knocking, check engine light indicating misfire. Now the oil is accumulating in the cylinders. He stated that because I am the secondary owner neither the dealership nor Hyundai will correct the problem. However, if I was the original owner the powertrain warranty would cover the repair. The problem with the 2017 GDI, DCT in the Tucson is a safety issue for all owners. Escalated the issue to Hyundai Motor America, agent Kyrillos, who said that he would contact the dealership to check for prior authorization with the dealership to see if they would cover it under the recall. After numerous calls (on my behalf) and finally speaking with Kyrillos, I was advised that the dealership denied the repair. I requested supervisor contact and have not had any further communication from the company. I did send a follow up email asking when I could expect to hear from them.