2018 Hyundai Tucson · symptom sheet
Check engine light or misfire
- 62owner reports
- 78,000median miles
- $3,000median quote
- 0involved a crash
Newest report Sep 3, 2026 · checked Oct 2, 2026
265 of the 397 complaints on this car are about the engine. 62 of those describe misfire.
Tick what matches of 62 reports
Misfire on other Tucson years
Report counts are for each model year on its own, so a newer car has had less time to collect them. Model years with too few reports of it for a sheet: 2014, 2020, 2021, 2023, 2024, 2025, 2026.
What this problem usually is
These reports start with the check engine light. Many describe the engine running rough or shaking at idle, a P0300-series code, or a catalytic converter code. A worrying number say the light was flashing. Owners often list ignition coils or spark plugs already replaced, and the light coming back afterward.
What got replaced
Owners who name the part that was replaced mention the sensor (12 reports) and the catalytic converter (4 reports).
Recalls and investigations
No recall on the engine covers the 2018 model year as of Oct 2, 2026.
NHTSA investigations into the engine on the Tucson
Pedestrian alert sounds. Closed aug 7, 2023, led to recall 22V-063.
Loss of motive power. Closed dec 12, 2023.
Engine fires. Closed feb 5, 2024, led to recall 23V-877.
What owners paid
8 of the 62 reports quote a price. Each dot is one quote. The middle half runs $900 to $10,000.
When it happens
The middle half of failures fell between 56,942 and 96,200 miles, from the 32 reports that gave a mileage.
Is this a known problem?
The manufacturer has sent NHTSA 13 service bulletins or notices for the 2018 Hyundai Tucson that deal with this problem. Newest first.
Federal rules make a manufacturer send NHTSA a copy of any notice about a defect that goes to more than one dealer or owner. Most of these are service bulletins, the repair instructions manufacturers send to dealers. NHTSA generally leaves safety recall bulletins out of this file, and recalls are listed separately.
Certain vehicles listed below may experience the Check Engine warning lamp illuminated with DTC P1326 and/or an engine concern/noise related to connecting rod bearing wear or damage.
Certain vehicles may experience the Check Engine warning lamp illuminated with DTC P1326 and/or engine may exhibit abnormal noise, or no crank/no start condition related to connecting rod bearing wear or damage.
Certain vehicles that have completed Service Campaign 966 may experience the Check Engine warning lamp illuminated with DTC P1326 and/or an engine concern/noise related to connecting rod bearing wear or damage.
Applicable vehicles with 2.0L T-GDI and 2.4L GDI engines may experience the Check Engine warning lamp illuminated with DTC P1326 and/or engine may exhibit Abnormal Noise or No Crank/No Start condition.
9 more on the 2018 Hyundai Tucson page.
What owners wrote
“My car on the expressway wouldn't go over 40 and this was happening intermittently so my car was unsafe. No check engine light but it was just at the dealership for an oil change. Has. been an ongoing problem since I bought the car! Smells, gets hot!”
Filed Nov 7, 2025
“The car experienced a red, blinking check engine light. We had the car towed to the local Hyundai dealership. Please see attached document for the work that was done. This was in November 2023, and we just now had to have the car towed to the dealership again (April 2024).”
Filed Apr 14, 2024
“My car was working fine since I bought it in April 2023. I passed inspection in November 2023. On January 24, after driving for about 15mins, my check engine light began flashing. The car would not accelerate over 25mph. I brought it to a dealership where it has been for 3 days. All communication about this problem was initiated by me, and the only answers I get are vague comments about testing.”
Filed Jan 26, 2024
“check engine light comes on bout 25 times a week i plug my scanner into it and it reads knock sensor faulty I seen a RECALL for these cars why doesn't my car have a recall of this on going issue?”
Filed Aug 27, 2022
Should you keep driving it?
This page can't tell you that. 0 of 62 reports involved a crash. Owners who file are the ones who had a bad experience, and nobody checks their reports. If the problem affects steering, braking, power or a fire risk, treat it as a safety fault and have it inspected before a long or high-speed drive.
File your own report with NHTSA. Complaint counts are how a problem gets an investigation. How reports land on this sheet.
Guide Which lights mean pull over now? Warning lights by color and urgency
Other problems on this car
- Engine failure, knocking or rod bearing 116 reports
- Engine stalls or loses power while driving 80 reports
- Burns oil or oil level rises 63 reports
- Brakes grind, pulse or wear early 42 reports
- Transmission shudders, slips or shifts hard 40 reports
- Engine rattles or ticks 27 reports