This bulletin provides important checkpoint guidelines when performing engine oil and filter change services.
full bulletin at NHTSA ↗2013 Hyundai Azera engine problems
moderate 14 complaints filed with NHTSA · avg repair $3,100 · see engine across all vehicles →
Complaints
14
Recalls
0
Avg fix
$3,100
What stands out
Of the 5 model years of Hyundai Azera we track for engine problems, this one carries the most owner complaints on file — 14.
Is there a fix? Manufacturer service bulletins
The manufacturer has issued service bulletins covering engine on this vehicle — documented repair instructions, service campaigns, or warranty extensions sent to dealers. A TSB isn't a recall (it's not a free safety remedy), but it's the manufacturer acknowledging the issue and how to fix it.
Follow the guidelines outlined in this bulletin to inspect and clean or replace certain components of the engine intake system accordingly during engine short block or sub-assembly replacement.
full bulletin at NHTSA ↗This bulletin provides the service procedure for engine connecting rod bearing clearance testing. Perform the procedure outlined in this bulletin to fulfill the Bearing Clearance Test inspection requirements to determine next required steps.
full bulletin at NHTSA ↗This bulletin provides the inspection procedure and repair guidelines for certain vehicles listed below.
full bulletin at NHTSA ↗This bulletin provides information regarding the changes in the timing chain and the crankshaft sprockets on certain Azera (HG), Santa Fe/Santa Fe XL (NC), Genesis (BH/DH), Genesis Coupe (BK), and G90 (HI) vehicles equipped with Lambda 3.3L / 3.8L GDI engines.
full bulletin at NHTSA ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
The failure pattern owners describe
Owners consistently describe a sequence of events: sudden overheating, loss of power on the highway, complete engine seizure, or stalling without warning. Independent mechanics and third-party shops have identified the root cause on multiple vehicles: the four rear head bolts are stripped and pulled out of the aluminum block threads. One mechanic explained the incompatibility: aluminum head and block expand and contract at different rates than steel bolts, and the factory thread depth is insufficient to hold them.
Dealerships have initially misdiagnosed these as simple blown head gaskets, thermostats, water pumps, or coolant problems—charging $1,000 for diagnostics and components that don't resolve the issue. When the root cause surfaces, repair estimates jump to $14,000 or more for engine replacement. Hyundai has acknowledged this defect in the same 3.3L GDI Lambda engine fitted to 2013 Santa Fe and Sonata models (which now carry extended warranty or recall coverage), yet refuses to extend the same remedy to Azera owners. Second owners are ineligible for the 100,000-mile powertrain warranty, and Hyundai has discontinued parts for this engine, directing dealers to source junkyard motors. Owners also report heavy black carbon soot on tailpipes and rear bumpers from day one of ownership—a symptom dealerships claim is normal design.
Failure modes owners describe
Head Bolts Pulled from Threads
Rear head bolts strip and pull out of the aluminum block threads during normal operation. Owners and independent mechanics attribute this to inadequate thread depth in the casting, incompatible thermal expansion between aluminum head/block and steel bolts, and possibly improper torque during factory assembly. This allows coolant leakage and loss of compression, leading to overheating and eventual head gasket failure. The root cause—loose or missing bolts—often goes undiagnosed by dealerships, which misidentify the problem as a simple blown head gasket.
When: Varies; 79,000 miles to 115,546 miles; some failures occur early after purchase on used vehicles
Symptoms owners cite: Overheating while driving, sometimes suddenly at highway speed; Loss of power while driving; Engine seizure or stalling; Check engine light or dashboard warning lights; Coolant leakage
Repairs/costs cited: Head gasket replacement ($14,000+ engine replacement quoted by dealerships); third-party mechanics identified loose/missing head bolts as the root cause. Hyundai dealerships initially missed this diagnosis and charged for thermostats, coolant flushes, and water pumps before acknowledging the need for engine replacement.
Recalls/TSBs owners mention: Hyundai denied warranty claims citing age of vehicle and ownership status (second owner losing extended powertrain warranty coverage). Hyundai offered no TSB or recall for the Azera despite acknowledging the same engine defect in 2013 Santa Fe (extended warranty/recall offered for Santa Fe 2013–2017 models). Parts availability: Hyundai discontinued this engine; dealership sources junkyard motors as replacements.
Engine Knock and Stalling (GDI Lambda Engine)
Owners report engine knocking or rattling sounds, difficulty starting, and stalling. Some describe sudden loss of power and complete engine shutdown without prior warning lights. The knocking may be related to oil starvation or internal damage; in at least one case, a dealership diagnosed complete loss of oil pressure. Owners note this is the same GDI Lambda engine in recalled 2013 Santa Fe and Sonata models.
When: Varies; reported at 92,000 miles and up; some onset after a few weeks of ownership
Symptoms owners cite: Engine knocking or rattling noise during acceleration or normal driving; Difficulty starting or intermittent no-start; Sudden loss of power while driving; Complete engine stalling with little to no warning; Check engine light illumination (sometimes delayed); Dashboard warning lights or sudden illumination
Repairs/costs cited: Dealership diagnostics were inconclusive; one dealership advised engine replacement (cost $14,000+) after diagnosing 'engine parts malfunction' or loss of oil pressure. Another mechanic stated the engine was under recall and refused to repair it. Tow and transport costs incurred.
Recalls/TSBs owners mention: Hyundai recall applies to 2013 Santa Fe and Sonata models (same engine) but not to Azera. Dealership acknowledged 'many' Azeras with the same issue on lot awaiting engine replacement. No factory TSB or official guidance provided to owners. Hyundai refused warranty coverage on at least one claim for an out-of-warranty vehicle.
Black Carbon Exhaust Buildup and Soot
Heavy black carbon or soot accumulates on tailpipes, exhaust tips, rear bumper, and surrounding areas. Occurs even on new vehicles (from dealership). Independent mechanics suspect improper fuel-to-air ratio or combustion tuning; dealership service dismisses it as normal for the catalytic converter design. In one case, customer expressed concern about potential carbon monoxide issues.
When: Present from early ownership; noticed within days of purchase in at least one case
Symptoms owners cite: Black carbon or soot coating on tailpipes and exhaust tips; Carbon buildup on rear bumper and paint marring; Exhaust fumes entering cabin when windows are open during acceleration; Visible soot deposits requiring frequent washing
Repairs/costs cited: Dealerships have cleaned and rewashed soot; no repair attempted. Three separate dealerships reportedly offered no remedy beyond cosmetic cleaning.
Recalls/TSBs owners mention: Hyundai dealership claims the carbon buildup is normal due to catalytic converter design. No TSB, adjustment, or repair offered.
Oil Starvation / Oil Consumption (GDI Lambda)
At least one owner explicitly identified this as an oil consumption or oil starvation issue related to the GDI Lambda engine design. A dealership diagnostic found the engine was not receiving oil pressure, necessitating engine replacement.
When: Not specified; failure occurred at 92,000 miles in one case
Symptoms owners cite: Engine knock or rattling; Loss of oil pressure (diagnosed by dealership); Engine failure requiring replacement
Repairs/costs cited: Engine replacement required; estimated cost $14,000+. Vehicle not repaired per owner report.
Synthesized from 14 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 3 most recent
My Engines head bolts have been pulled out of the threads causing the engine to overheat
Engine started knocking about 3 to 4 months ago, Car keeps having random times when it won't starr. The lights came on dash nothingto the engine. The dealership has "checked" it a few times but can'tfind anything. The knocking is consistentif you drive it for more than a couple of miles. Car is available for inspection. Also my MPG has been increasingly getting worse. The gauge says 19 but I'm…
I purchased a new 2013 Hyundai azera. My wife and I was given a class on our new vehicle. The day of our purchase my wife and I noticed the back bumper was every dirty, we thought. The back bumper was covered with black carbon that came from the exhaust that also had carbon as well inside and around the outside tips. I contacted the dealership where we purchase the car. They ask what grade gas…
Had engine trouble with your 2013 Hyundai Azera?
File a complaint with NHTSA → It's free, official, and how every report above got here — owner filings are the federal safety record this page is built on.
Common questions
How serious is the engine problem on the 2013 Hyundai Azera?
It's a documented issue but not catastrophic. 14 complaints have been filed. Repairs average $3,100 and most owners catch it before it causes a breakdown.
At what mileage does the engine typically fail?
Based on the 14 complaints filed, engine issues most often appear around 53,385 miles. Some report problems earlier; some make it well past 150,000 with no symptoms. Maintenance habits matter — vehicles that received timely fluid services and were not regularly overworked tend to last longer.
What does it cost to fix?
Independent shops typically charge around $3,100 for engine repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to engine?
No active recalls currently cover engine issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.
Related
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. Verify the raw federal record at
nhtsa.gov/vehicle/2013/Hyundai/Azera.
Severity ratings are derived from reported crashes, fires, injuries, and fatalities. Repair cost estimates are
independent-shop national averages and may differ in your area. Some links on this page are affiliate links.