Diagsheet

2018 Hyundai Santa Fe · symptom sheet

Engine failure, knocking or rod bearing

  • 29owner reports
  • 83,000median miles
  • $2,000median quote
  • 0involved a crash

Newest report Apr 11, 2026 · checked Sep 9, 2026

55 of the 108 complaints on this car are about the engine. 29 of those describe engine failure, which makes it the most reported problem on the 2018 Santa Fe.

Tick what matches of 29 reports

12
7
3
6
11
4

What got replaced

Owners who name the part that was replaced mention the engine (28 reports) and the timing chain (4 reports).

Recalls and investigations

No recall on the engine covers the 2018 model year as of Sep 9, 2026.

NHTSA investigations into the engine on the Santa Fe

DP24-001opened Feb 8, 2024
Engine · model years 2017

3.3l engine loss of motive power (lomp). Closed may 16, 2024.

NHTSA summary
The Office of Defects Investigation (ODI) received a petition on February 2, 2024, requesting a defect investigation into an alleged defect of the "engine" on the following vehicle model: 2017 Hyundai Santa Fe vehicles equipped with the 3.3L V-Shaped GDI Lambda-II engines. The petition cites allegations of a loss of motive power, often resulting in an engine seizure. The stall is preceded by a knocking sound, decreased performance and no warning lights. An analysis of the subject vehicle population was undertaken using complaints submitted to ODI along with manufacturer data. It was determined that the frequency of events is low for the subject population, while those that specifically report a loss of motive power event have a high mileage at the time of incident. The 2017 Santa Fe is equipped with a service interval reminder for the consumer that must be set by the consumer themselves or at a dealership. A Technical Service Bulletin (19-EM-002H) instructs the dealership to set the maintenance reminder at the completion of routine maintenance service or anytime a repair is performed that requires new engine oil. This maintenance reminder will help reinforce the need for proper oil maintenance intervals. Additionally, the Santa Fe vehicles with 3.3L V-shaped Lambda-II engines will be added to Hyundai’s existing Technical Service Bulletin (23-EM-007H) related to combustion chamber cleaning. These actions will help limit negative consumer incidents related to loss
DP22-003opened Sep 12, 2022
Engine · model years 2010 to 2021

Loss of motive power. Closed dec 12, 2023.

NHTSA summary
The National Highway Traffic Safety Administration (NHTSA) received a letter dated July 13, 2022, petitioning the Agency to initiate a safety defect investigation into loss of motive power allegations attributed to oil drain pan assembly failures on certain Hyundai Motor America, Inc. and Kia America, Inc. vehicles spanning Model Years (MY) 2005-2021. The Petitioners cited examples of complaints indicating that the subject vehicles were experiencing rapid loss of engine oil due to oil drain plug back outs, resulting in loss of motive power and/or catastrophic engine damage. Additional complaints were provided which alleged that the oil drain pans lack sufficient structural integrity and are susceptible to cracking. The petition itself can be reviewed at NHTSA.gov under ODI number 11481745. On September 12, 2022, the Office of Defects Investigation (ODI) opened Defect Petition (DP22-003) to evaluate the Petitioners’ request. The Petitioners have provided additional complaints within four supplemental letters dated January 31, 2023, March 21, 2023, May 23, 2023, and August 4, 2023. ODI’s evaluation included the review and analysis of the complaints and supporting information submitted by the Petitioners, as well as additional complaints submitted directly to NHTSA which referenced either the oil drain plug or a crack in the oil pan. After reviewing the available data, ODI has not identified evidence that would support opening a defect investigation into the oil drain pan as
EA21-003opened Dec 22, 2021
Engine · model years 2012 to 2014

Engine fires. Closed feb 5, 2024, led to recall 23V-877.

NHTSA summary
On March 29, 2019, the Office of Defects Investigation (ODI) opened two Preliminary Evaluations (PE19-003 on Hyundai and PE19-004 on Kia) to broadly investigate incidents of non-crash fires (regardless of origin or operational status of the vehicle) on various model year Hyundai and Kia vehicles. During the PE investigations, Hyundai and Kia issued several recalls to address vehicle fires, including those due to engine failures involving various engine types. The remedies for the engine failure recalls typically involve engine inspection (to detect existing damage), and if necessary, engine replacement. Additionally, both manufacturers have been installing an engine control software modification known as Knock Sensor Detection Software (KSDS) which is intended to detect impending engine failure, alert the driver, and limit engine power (to lessen likelihood of engine failure).KSDS is being installed under recalls and non-safety field actions, and both companies have extended limited engine warranties (see recall files). On December 22, 2021, ODI upgraded PE19-003 and PE19-004 to this Engineering Analysis (EA21-003, covering both Hyundai and Kia) to evaluate the scope of the prior recalls related to engine failures/fires and the efficacy of the recall remedies for the recalls, as well as the long-term viability of related programs and non-safety field actions being conducted by Hyundai and Kia. The former issue involved approximately 550,000 MY 2013 Hyundai Elantra, MY
RQ17-004opened May 18, 2017
Engine · model years 2012 to 2014

Scope and timeliness. Closed dec 22, 2021, led to recall 17V-226.

NHTSA summary
NHTSA opened Recall Query (RQ) 17-004 to investigate the timeliness and scope of Hyundai?s Theta II GDI engine recalls (Recall Nos. 15V-568 and 17V-226), and Hyundai?s compliance with reporting requirements. On November 23, 2020, the Agency entered into a Consent Order with Hyundai to administratively resolve NHTSA?s assertions of violations of law in connection with RQ17-004. NHTSA?s assertions included that Hyundai may be liable for civil penalties on multiple grounds, including the untimeliness of Recall Nos. 15V-568 and 17V-226, inaccuracies in Hyundai?s recall reports, and that a required report describing potential safety-related issues contained certain inaccuracies or omissions.Under the Consent Order, Hyundai agreed to a total civil penalty of $140,000,000. The total civil penalty included payment of $54,000,000 as a Non-Deferred Amount. Hyundai also agreed to a sum of $46,000,000 as an Abeyance Amount to be deferred and held in abeyance pending its satisfactory completion, as reasonably determined by NHTSA, of the requirements of the Consent Order.Additionally, Hyundai agreed to a $40,000,000 Performance Obligation Amount to be expended by Hyundai to fulfill specified Safety Data Analytics Infrastructure obligations and Test and Inspection Laboratory obligations. The Consent Order also includes other terms designed to enhance Hyundai?s safety practices, and requires Hyundai to retain a Third-Party Auditor who directly reports to NHTSA.Other than RQ17-004, the Consen
PE02-012opened Jan 31, 2002
Engine And Engine Cooling · model years 2001

Engine seizure. Closed aug 12, 2002.

NHTSA summary
There is no summary currently available

What owners paid

7 of the 29 reports quote a price. Each dot is one quote. The middle half runs $550 to $7,500.

$550$2,000$7,500
$0k$2k$4k$6k$8k

When it happens

The middle half of failures fell between 16,000 and 113,000 miles, from the 18 reports that gave a mileage.

519
122
223
1224
625
326

What owners wrote

“My engine failed on 11/21/24. I brought it to dealership to confirm the failure on 11/22/2024. I was driving on the highway when the car started to violently shake and then shut off. The dealership sent pictures of the engine and other components to Hyundai to confirm the engine failure. No lights came on prior to the failure.”

Filed Jan 14, 2025

“Was on my way home from work, and suddenly my engine threw a rod and now my engine is blown.”

Filed Oct 29, 2024

“The engine started exhibiting consumption of oil and knocking around 84,000mi had the car towed to the shop. Don’t have much faith they will do anything even though it is a certified preowned.”

Filed Apr 12, 2024 · 84,000 miles

“Driving at 35 mph, engine lost power and went into limp mode. Check engine light was flashing. Showed code P0018. Catastrophic engine failure. No compression in bank 2 cylinders. Needs an engine replacement. Only 113,000 miles on the engine. No help from Hyundai at all.”

Filed Feb 15, 2024 · 113,000 miles

Should you keep driving it?

This page can't tell you that. 0 of 29 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.