2017 Hyundai Sonata · symptom sheet
Engine knocking or ticking
- 55owner reports
- 100,000median miles
- $3,880median quote
- 0involved a crash
Newest report Sep 22, 2026 · checked Oct 2, 2026
55 of the 147 reports of engine failure on the 2017 Sonata describe engine knock.
Part of Engine failure, knocking or rod bearing (147 reports) · also: engine seized
Tick what matches of 55 reports
Engine knock on other Sonata 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: 2019, 2020, 2021, 2022, 2023, 2024.
What got replaced
Owners who name the part that was replaced mention the knock sensor (21 reports), the rod bearing (9 reports) and the engine (4 reports).
Recalls and investigations
No recall on the engine covers the 2017 model year as of Oct 2, 2026.
NHTSA investigations into the engine on the Sonata
Loss of motive power. Closed dec 12, 2023.
Engine fires. Closed feb 5, 2024, led to recall 23V-877.
Scope and timeliness. Closed dec 22, 2021, led to recall 17V-226.
What owners paid
10 of the 55 reports quote a price. Each dot is one quote. The middle half runs $495 to $4,385.
When it happens
The middle half of failures fell between 53,000 and 115,000 miles, from the 19 reports that gave a mileage.
Is this a known problem?
The manufacturer has sent NHTSA 2 service bulletins or notices for the 2017 Hyundai Sonata 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.
Hyundai is conducting a product improvement campaign to enhance the knock sensor software to detect abnormal engine bearing noise before potentially severe engine damage occurs.
Hyundai has developed a new engine monitoring technology called a Knock Sensor Detection System (KSDS). The technology uses software innovations and leverages existing engine sensors to continuously monitor for symptoms that may precede an engine failure.
What owners wrote
“The car went into limp mode activated by the knock sensor. Audible knocking noises were emitted. Hyundai dealership replaced knock sensor. Car drove 63 miles before knocking noise repeated and car went into limp mode. Hyundai dealership requested new engine as problem is covered by extended warranty for known issue. It has been declined by corporate office. Car is at dealership and unsafe to operate.”
Filed May 2, 2025
“Engine burning oil like crazy never had to put so much in for any other car. Risk of engine lock without enough oil also sets of the knock sensor. Every time I get an oil change they let me know that Iâve burned most of my oil and that itâs low so I just started doing my own oil topping it off. Problem has been ongoing since I got the car.”
Filed Apr 9, 2025
“The engine is losing oil at a much higher rate, causing a knocking sound. Not accelerating at it should without the sound getting louder and hesitating. This vehicle has been inspected by a licensing mechanic ( Goodyear). The check engine lights and multiple codes have appeared while driving for about the last 4-5 months.”
Filed Nov 14, 2024
“UNKNOWN Iâve had to replace the knock sensor twice in my vehicle in less than 2 months, my paint on my car is also peeling off really bad.”
Filed Mar 17, 2023
Should you keep driving it?
This page can't tell you that. 0 of 55 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 Taking it to a shop? How to describe this problem so it gets found
Other problems on this car
- Burns oil or oil level rises 131 reports
- Engine stalls or loses power while driving 116 reports
- Check engine light or misfire 106 reports
- Power steering cuts out or goes heavy 88 reports
- Engine rattles or ticks 37 reports