This bulletin provides important checkpoint guidelines when performing engine oil and filter change services.
full bulletin at NHTSA ↗2016 Hyundai Accent engine problems
moderate 21 complaints filed with NHTSA · avg repair $3,100 · see engine across all vehicles →
Failure mileage
Complaints
21
Recalls
0
Avg fix
$3,100
When does it fail?
Of the 21 engine complaints filed for the 2016 Hyundai Accent, here's the actual mileage breakdown — failures cluster heaviest at 25,000-50,000 mi.
0-25k
25-50k
50-75k
75-100k
100-125k
125-150k
150k+
Each bar shows the share of total complaints filed at that mileage range. Peak failure window highlighted. Some owners report problems earlier; some make it well past 150,000 miles symptom-free. Maintenance habits and driving conditions shift the curve as much as mileage alone.
What stands out
Of the 15 model years of Hyundai Accent we track for engine problems, this one carries the most owner complaints on file — 21.
Engine accounts for 21% of all owner complaints filed against this vehicle, across 6 categories tracked.
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 ↗If you are servicing an applicable vehicle with a ?Check Engine? light on and one or more of the DTC listed below, follow the repair procedure and replace the related solenoid and oil pressure harness
full bulletin at NHTSA ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
The failure pattern owners describe
Owners of 2016 Hyundai Accents report a pattern of serious engine issues. The most common complaint is oil consumption so severe that weekly top-offs are necessary despite no visible leaks underneath—some owners describe the engine as "drinking oil." This happens as early as 78,000 miles. Internal damage appears to follow: owners report loud engine knock, described as coming from the lower end of the engine, often accompanied by low oil and check engine lights. Multiple independent mechanics and Hyundai dealerships have diagnosed bearing wear, piston slap, faulty engine rings, and worn camshaft bearings—problems requiring engine replacement. In several cases, engines fail completely without warning while driving, with some owners stranded on highways. One owner documented aluminum shavings on a replaced VVT component, suggesting internal wear from the oil starvation cycle. Engine overheating has also been reported. Owners note that Hyundai has refused warranty coverage or recalls for the 2016 model, despite acknowledging identical failures in 2015 models and 2.0L engines already under recall. Dealership attempts to fix oil consumption—valve cover gasket replacement, timing cover repairs, VVT replacement—have proved unsuccessful in resolving the underlying problem. The issue appears widespread enough that owners have filed petitions requesting the 2016 Accent be included in existing recalls.
Same Hyundai Accent engine reports on nearby years: 2013 · 2014 · 2017 · 2019
Failure modes owners describe
Excessive oil consumption / internal oil loss
Engine consumes or loses excessive amounts of oil with no visible external leaks. Owners report needing to add oil weekly or multiple times between service intervals. Oil consumption test performed at dealership in one case showed consumption within normal range, but owner disputed. Fuel mixing with oil noted in one case.
When: Typically first observed between 78,000 and 132,000 miles; some noticed in early ownership
Symptoms owners cite: Need to add 1 quart of oil per week; Oil level drops rapidly despite no visible leaks under vehicle; Check engine light may or may not illuminate; Oil warning light illuminates intermittently; Engine runs rough or shakes when oil is low; Fuel mixing with oil detected in one case
Codes mentioned: P0011, P0014, P0420
Repairs/costs cited: Valve cover gasket replacement (performed twice in one case, unsuccessful); timing cover repair performed at dealership (unsuccessful); VVT or oil control valve replacement (found silver aluminum shavings on old component); fuel injector/upstream sensor replacement attempted in one case; oil consumption test performed; spark plugs changed; engine replacement recommended by multiple shops when consumption continues unresolved
Recalls/TSBs owners mention: Dealership oil consumption test showed normal range within 500 miles (one case); manufacturer contacted in multiple cases but stated VIN not under recall or offered no assistance; petition filed for 2016 Accent to be included in existing recall for Hyundai/Kia models with same problem
Engine knock / bearing wear / piston slap
Loud knocking noise from engine, often preceded or accompanied by oil consumption. Mechanics diagnosed faulty engine rings, bearing wear, piston slapping, camshaft bearing wear, and in one case piston rod bearing failure at 100,000 miles. Silver aluminum shavings found on VVT component suggest internal wear.
When: Mileage range 78,000 to 133,348 miles; knock typically begins intermittently then becomes constant
Symptoms owners cite: Loud knocking noise from engine while running; Knocking heard at idle and under load; Check engine light illuminates (intermittent in one case, constant in others); Multiple unknown warning lights may illuminate; Engine oil level found low when knock occurs
Codes mentioned: P0011, P0014, P0420
Repairs/costs cited: VVT or oil control valve replacement (found aluminum shavings); engine replacement recommended by independent mechanics and Hyundai dealership in multiple cases (not yet performed in most reported cases)
Recalls/TSBs owners mention: Manufacturer not informed in most cases; one dealership informed but no recall applied; owner notes existing recall for 2.0L GDI engines with same knock/bearing failure issue but 1.6L non-turbo engine not included despite apparent design flaw
Loss of power / limp mode / abrupt failure
Vehicle suddenly loses power or fails to accelerate as commanded while driving. Some cases reported vehicle entering limp mode; others experienced complete engine failure. One case involved engine shutdown on highway; another reported failure at 180,000 miles requiring engine replacement.
When: Reported at 86,000, 116,000, and 180,000 miles; in one case abrupt failure at highway speed
Symptoms owners cite: No acceleration response when accelerator pressed; Vehicle enters limp mode without warning light; Abrupt engine failure without prior warning; In one case, engine started smoking before shutdown; Reduced power output; operator must press pedal to floor to achieve desired speed
Repairs/costs cited: Engine replacement needed in multiple cases (not yet performed); one vehicle towed and not repaired
Recalls/TSBs owners mention: Manufacturer not informed in some cases; no assistance or recall offered
Engine overheating / cooling system failure
Engine overheats during highway driving. One case involved faulty cooling fan and frozen fan; steam spewed from engine. Broken gasket noted in one case.
When: At 62,000 miles in reported case; temperature 80 degrees F at time
Symptoms owners cite: Engine spewing steam; Engine overheating during normal highway operation; Engine would not start after cooling down; Frozen cooling fan
Repairs/costs cited: Cooling fan replaced; reservoir replaced (non-OEM replacements used as OEM unavailable at time)
Engine sludge / oil degradation
Engine oil becomes clogged with excessive crud or sludge. One complaint noted oil appeared to have come from a 1960s vehicle despite maintenance.
When: Reported at unknown mileage; check engine light triggered discovery
Symptoms owners cite: Check engine light illumination; Heavy sludge or crud in engine; Oil visibly degraded or dirty despite maintenance
Synthesized from 21 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 5 most recent
My car stopped accelerating while I was on the expressway. The report shows that my car was in good condition. They later told me that my engine gave out. They told me that several 2016 Hyundai Accents have been having this issue. This needs to be recalled.
The contact owns a 2016 Hyundai Accent. The contact stated that while operating the vehicle, the check engine warning light and oil warning light illuminated, and the vehicle would shake, vibrate, and drive rough. Upon inspection, it was discovered that the engine oil was very low. The vehicle was taken to the local dealer who performed an oil consumption test and changed the spark plugs;…
In 2019, the car started losing oil. Not realizing it was still under warranty, twice I took it to my mechanic and they replaced the valve cover gasket, December 2019 and August 2020. It never resolved and then realized it was still under warranty. Took it to the dealership November 2020 and they found the oil was leaking from a timing cover and claimed it was fixed. It appeared so at first, but…
Was driving the car 10-15 miles from home. Engine started smoking. Pulled off and let the car cool down. I live in az; it's 80 degrees or so now. Started car and drove home. Car started smoking again and shut down. Called local roadside mechanic for Hyundai's. He looked at it and said, it was leaking, fan frozen, broken gasket. Had the car towed home. It's a 2016. I bought it in jan 2018 from a…
Engine overheated while highway driving (spewing steam). Would not start after cooling down. Mobile mechanic diagnosed a faulty cooling fan that had to be replaced along with reservoir (non-OEM replacements were only available at the time). Continued the trip with no further engine temperature problems.
Had engine trouble with your 2016 Hyundai Accent?
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 2016 Hyundai Accent?
It's a documented issue but not catastrophic. 21 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?
Across the 10 complaints that reported odometer mileage, most engine failures cluster between 91,379 and 116,000 miles, with the median around 104,000. A quarter of owners report trouble before 91,379; a quarter make it past 116,000. Maintenance history matters more than the odometer alone — this is the reported failure window, not a guarantee.
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/2016/Hyundai/Accent.
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.