Why is my Hyundai Santa Fe Sport engine knocking, burning oil or dying?

Short answer: Santa Fe Sport 2.4 and 2.0T engines are known for rod bearing failure. Oil burning, a knock, or code P1326 are the warning signs. Ask a Hyundai dealer to check your VIN for recall 17V226000 (2013-2014), the knock sensor software campaign and the extended engine warranty before paying for anything.

Symptom: The engine burns oil between changes, knocks louder as it warms up, the check engine light shows P1326, the car goes into limp mode, or the engine seizes.

What to check first

1. Check the oil level often, and stop driving if it's low.
2. Have a Hyundai dealer run your VIN for recalls, the knock sensor (KSDS) software campaign and extended warranty coverage.
3. If the check engine light shows P1326, take it to a Hyundai dealer.
4. Keep all your oil change records. Owners said they matter for coverage.
5. Run your VIN at nhtsa.gov/recalls.

Likely causes

1. Worn connecting rod bearings (Theta II engines). Rod bearings let the connecting rods spin on the crankshaft. Owners and a Hyundai dealer tech said debris from manufacturing can starve them of oil, leading to oil burning, then knocking, then engine failure. Hyundai replaced many engines under recall, a settlement and an extended warranty.
2. Worn piston rings (oil burning on high-mileage engines). Piston rings seal the pistons. One high-mileage 2.0T owner was told the oil burning was from worn rings and just kept topping it up.
3. Clogged PCV system. The PCV (positive crankcase ventilation) valve vents engine gases. A clogged one can make oil burning worse.

What it usually costs

Owners got engines replaced by Hyundai under the recall, settlement or extended warranty. One owner was trying to get back money paid for a teardown. Out-of-pocket engine prices weren't posted in these threads.

Is it safe to keep driving?

No, if it's knocking, shows P1326 or is in limp mode. Hyundai's recall filing says bearing wear can seize the engine and increase the risk of a crash. Get it towed to a Hyundai dealer.

DIY or shop?

Checking oil and cleaning the PCV are DIY. Engine diagnosis and replacement should go through a Hyundai dealer for coverage.

Recalls, bulletins and complaints in plain words

• Recalls: NHTSA lists recall 17V226000 for certain 2013-2014 Santa Fe Sport: machining errors can cause bearing wear that may seize the engine. Dealers inspect the engine and replace the short block as needed. Also check 18V934000 (a fuel pipe on cars repaired under the engine recalls) and the 2017-2018 ABS module fire recalls 22V056000 and 22V810000. If your car is part of a recall, the dealer fixes it for free. Check your VIN at nhtsa.gov/recalls.
• Plain words: The complaint count below shows how often owners reported problems that mention these words to NHTSA. A count is not proof of a defect.
• NHTSA complaints: 888 keyword-matched complaints for Hyundai Santa Fe Sport 2013–2018 (of 1300 unique complaints queried, NHTSA complaints API by model year, queried 2026-11-04; keywords: engine, knock, seiz, stall, bearing, oil, rod). This counts complaints that mention these words. It is not a defect finding.

What owners report

• In 2018 Santa Fe Sport 2.4 Liter Engine Replacement Experience. on Reddit r/Hyundai, a 2018 Santa Fe Sport 2.4 owner got the engine replaced and shared the process. A Hyundai dealer worker said they always have engines being swapped on Hyundai's dime under the class action settlement, with warranty to 100k miles. Owners said that after 100k miles only the rod bearing warranty extension applies, and the dealer can print the exact bulletin for your car. Another 2018 owner had months of oil burning before smoke started coming from the tailpipe.
• In Santa Fe engine seized now what? on Reddit r/Hyundai, a 2016 Santa Fe Sport 2.4 with 120k miles seized and set code P1326. Hyundai said the car was in the TXXI service campaign, but the nearest dealers were booked for months, and the owner faced towing it 70 miles at their own cost.
• In 2014 Hyundai Santa Fe Sport 2.0T - high mileage, burning oil. Safe to just top up more frequently? on Reddit r/MechanicAdvice, a 2014 Santa Fe Sport 2.0T at 220,000 km was burning oil. Replies said to clean the PCV system, keep it topped up, and ask the dealer about the knock sensor software campaign and its extended engine warranty. Another owner's Optima burned oil and then developed rod knock, and Hyundai covered a new engine.

Quick tip

Don't pay for engine work before a Hyundai dealer checks your VIN for coverage. Keep your oil change receipts.

Vehicle focus: Hyundai Santa Fe Sport, 2013-2018, with the 2.4 or 2.0T Theta II engine.

Safety / mechanic note

An engine seizure on the highway is dangerous. Verify with a mechanic.