This bulletin provides important checkpoint guidelines when performing engine oil and filter change services.
full bulletin at NHTSA ↗2017 Hyundai Elantra engine problems
moderate Owners of the 2017 Hyundai Elantra have filed 170 NHTSA complaints about the engine, typically surfacing around 60,000 miles at roughly $3,100 to repair (U.S. federal records, as of July 2026). Source: NHTSA Office of Defects Investigation. See engine across all vehicles →
Failure mileage
Complaints
170
Recalls
0
Avg fix
$3,100
| Model year | engine complaints |
|---|---|
| 2013 Elantra | 130 |
| 2014 Elantra | 105 |
| 2015 Elantra | 60 |
| 2016 Elantra | 80 |
| 2017 Elantra (this page) | 170 |
| 2018 Elantra | 89 |
| 2019 Elantra | 98 |
| 2020 Elantra | 74 |
| 2021 Elantra | 9 |
1crash
4fires
What stands out
Of the 19 model years of Hyundai Elantra we track for engine problems, this one carries the most owner complaints on file — 170.
Owners have filed 170 engine complaints with NHTSA against this vehicle, but no formal recall covers the issue — the federal record reflects what manufacturers have admitted, not everything owners are reporting.
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 information related to an Electronic Control Module (ECM) software update to revise control logic for completion of OBD-II Fuel System Readiness Monitor diagnosis.
full bulletin at NHTSA ↗This update includes information related to Electronic Control Module (ECM) software to revise control logic for completion of OBD-II Fuel System Readiness Monitor diagnosis.
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 ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
The failure pattern owners describe
The 2017 Hyundai Elantra engine exhibits a cluster of critical defects that owners document across 170 complaints. The most severe issue is excessive and rapid oil consumption—vehicles lose 1 to 3 quarts between scheduled oil changes with no visible leaks and no low-oil warning light. Owners describe engines suddenly knocking, stalling, or seizing after the oil depletes, often at highway speeds. One owner's oil disappeared between an August service and a few months later, nearly running the engine dry.
Ignition coils fail prematurely, beginning as early as 23,000 miles. The issue recurs across cylinders sequentially; one owner replaced coils three times in a single year. Dealership service advisors admit this is a known problem affecting many 2017 Elantras, yet Hyundai changed policy to replace coils "as they fail" rather than all at once, despite knowing all will eventually fail.
The engine also stalls unexpectedly—during highway merging, at traffic lights, or mid-drive—with no advance warning lights. Diagnostic codes often don't register, forcing owners to return repeatedly. When the engine finally fails internally, metal fragments and sludge appear in the oil.
Hyundai issued recalls and extended warranties for 2014 and 2016 model-year Elantras with identical symptoms but excluded the 2017. Owners note their VINs don't qualify for recalls or manufacturer support, even though independent shops and dealerships confirm the same manufacturing defects. Repairs cost $6,000 to $9,000, and goodwill claims are routinely denied, leaving second owners and those outside warranty periods without recourse.
Same Hyundai Elantra engine reports on nearby years: 2014 · 2015 · 2016 · 2018 · 2019
Failure modes owners describe
Excessive Oil Consumption / Rapid Oil Loss
Engine consumes or loses oil at abnormal rates (up to 1.5 quarts per 1,000 miles reported), leading to low or no oil condition despite recent oil changes. No oil leaks visible underneath vehicle. Often no low-oil warning light illuminates until catastrophic failure occurs.
When: Reported from 2,000 to 130,000+ miles; typically emerges within first few years of ownership
Symptoms owners cite: Oil level drops dramatically between service intervals; No visible oil leaks or puddles; No low-oil warning light on dashboard; Engine knocking begins as oil depletes; Sudden engine stall or loss of power at highway speeds; Engine seizes without warning
Codes mentioned: P0011, No codes present in many cases
Repairs/costs cited: Engine replacement quoted at $6,000–$9,000+. Independent shops and dealerships both document metal fragments and sludge in oil. One owner spent $3,000+ on sensor replacements before discovering oil consumption was root cause. Some owners report Hyundai denying warranty coverage based on non-original-owner status despite 100,000-mile factory warranty.
Recalls/TSBs owners mention: Hyundai oil consumption testing (Phase 2) documented in at least one case. Class-action lawsuit exists but 2017 Elantra excluded. TSB and recall exist for other model years (2014, 2016 Sonata) with same symptoms but not applied to 2017 Elantra. Extended warranty programs offered to some owners, but many VINs excluded. Goodwill claims routinely denied.
Ignition Coil Failure / Misfiring
Ignition coils fail prematurely, causing cylinder misfires. Failures occur as early as 23,000 miles and recur sequentially across cylinders. Original equipment coils overheat and warp during normal driving. Dealership service advisors acknowledge this is a known issue affecting many 2017 Elantras.
When: 23,000 to 61,000+ miles; multiple failures across cylinders over time
Symptoms owners cite: Engine check light illuminates; Engine misfires and jerks during acceleration or idle; Rough idling, hesitation, shaking; Loss of power while driving; Car stalls without warning or intermittently; Problem may resolve briefly after restart then recur; No diagnostic codes stored or codes clear before dealer visit
Codes mentioned: P0300 (random/multiple cylinder misfire), P0301 (cylinder 1 misfire), P0303 (cylinder 3 misfire), P0304 (cylinder 4 misfire), P030100
Repairs/costs cited: Ignition coil replacement $300–$500+ per coil. One owner replaced coils three times in one year. Dealership policy changed from replacing all coils to replacing only the failed coil 'as they go bad,' despite knowing all will eventually fail. Spark plugs also often replaced simultaneously. Software updates performed but inconsistently resolve issue. One independent mechanic replaced coil, camshaft position sensor, crankshaft position sensor, VVT solenoid, and timing belt ($5,000+) without permanent fix.
Recalls/TSBs owners mention: TSB 20-FL-001H issued addressing ignition coil and software update. Warranty replacements covered for original owners within 60,000 miles or 5 years; second owners get no coverage. Recall issued for 2016 Sonata (TSB 16-01-003-1) for same defect; 2017 Elantra not included. Hyundai service advisor acknowledged known issue but refused visual inspection. Some dealers perform software patches; others cannot duplicate problem at dealership visit.
Engine Stalling / Loss of Power (Intermittent)
Engine unexpectedly stalls, cuts out, or loses power while driving, often at highway speeds or during acceleration/merging. No warning lights illuminate before failure in many cases. Stalls recur intermittently; sometimes no diagnostic codes present, making service difficult.
When: Throughout vehicle ownership; reported as early as 16,000 miles and as late as 145,000 miles
Symptoms owners cite: Engine dies or stalls mid-drive without warning; Stall occurs at low speeds, stop lights, or high-speed merging; RPM drops suddenly and engine shuts off; Vehicle may restart immediately or require multiple attempts; No check engine light before stall; light comes on after; Repeated episodes within single drive (4+ times in 15 miles reported); No diagnostic codes available when vehicle brought to dealer
Codes mentioned: P0014 (camshaft position timing over-retarded), No codes in majority of cases
Repairs/costs cited: Repairs attempted include camshaft assembly replacement, CVVT (Continuously Variable Valve Timing) replacement, timing chain replacement, intake camshaft oil flow control valve replacement, PCM cleaning, and adaptive value resets. Costs $1,000–$2,000+. Many repairs do not resolve issue permanently; stalling recurs days or weeks later. One owner's vehicle stalled twice within 45 minutes after dealership repair attempt.
Recalls/TSBs owners mention: Dealership unable to duplicate problem in many cases; repair refused without codes present. When codes do appear, Hyundai Technical Line consulted and part replacement authorized (e.g., exhaust CVVT phaser). One case involved four separate service visits with stalling recurring on fourth visit. Manufacturer did not acknowledge systematic defect in responses documented.
Engine Knock / Rod Bearing Failure
Loud knocking or ticking noise emanates from engine, escalating with RPM increase. Indicates internal engine damage: metal fragments in oil, worn sprockets, rod bearing failure (rod thrown through cylinder wall). No warning lights alert driver before catastrophic failure.
When: Reported from 20,000 to 130,000+ miles; can develop suddenly with no prior indication
Symptoms owners cite: Loud knocking, ticking, or clanging noise from engine; Noise increases in frequency with higher RPM; Vibration or shaking from engine; Oil pressure warning light and check engine light illuminate (often after knocking begins); Reduced power and hesitation; Engine stalls or seizes; Metal fragments or sludge found in engine oil upon inspection; Rod thrown through cylinder wall (catastrophic)
Codes mentioned: No warning codes before failure in many cases, Low oil pressure codes appear after damage occurs
Repairs/costs cited: Engine replacement mandatory; costs $6,000–$9,000+. Independent mechanics identify metal shavings, carbon buildup, piston-ring issues, and manufacturing defects (sprockets too short to grasp properly). One owner reported paying $3,000 in repairs before discovering knock was engine failure. Another spent $8,000 on engine replacement after being told engine was 'beyond repair.'
Recalls/TSBs owners mention: Manufacturer notified in multiple cases. Recalls exist for 2014 Elantra and 2016 Sonata for similar engine knock issues due to piston ring defects; 2017 Elantra not included despite identical symptoms. Goodwill claims submitted by owners and dealerships routinely denied. Manufacturer states VIN not included in recall or warranty extension, regardless of matching failure characteristics.
Engine Oil Drain Plug Failure
Oil drain plug becomes loose or falls out during vehicle operation, causing complete and sudden loss of engine oil. Oil pan depletes while driving; vehicle stalls immediately and engine seizes.
When: One documented case at 101,000+ miles approximately 4 months after service
Symptoms owners cite: Engine oil completely spews out while driving; Car stalls suddenly with no warning lights active; Burning smell may occur; No visible oil leak prior to failure
Codes mentioned: No codes before failure
Repairs/costs cited: Oil drain plug fell out completely, confirmed by independent shop inspection of undercarriage showing no other damage. Engine replacement required. Cost quote not specified in narrative.
Recalls/TSBs owners mention: Extended warranty plan denied coverage, claiming this was not a covered failure. Hyundai dealership (Bob Howard Hyundai, Oklahoma City) initially contacted, requested vehicle inspection, then refused responsibility. Certified letters sent to Hyundai Consumer Affairs (case opened); Hyundai stated dealership must address issue and would follow up. Upon follow-up, dealership again refused responsibility. BBB complaint filed; attorney consultation initiated. No final resolution documented.
Coolant Thermostat Failure
Coolant thermostat fails, triggering check engine light. Hyundai TSB 18-01-012 exists but manufacturers and dealerships refuse to perform prescribed service even when TSB presented.
When: Timing not specified in complaint
Symptoms owners cite: Check engine light illuminates; Diagnostic code P0128 (coolant thermostat)
Codes mentioned: P0128
Repairs/costs cited: Part replacement specified in TSB 18-01-012; cost not stated. Dealership refusal to comply means repair remains undone.
Recalls/TSBs owners mention: TSB 18-01-012 issued by Hyundai and posted on NHTSA website. Multiple dealerships (three contacted) refused to perform prescribed service despite TSB requirement. One dealership manager told owner to 'fix it yourself' and hung up. No formal recall issued. Owner states refusal violates known-defect protocol.
Timing Chain / Sprocket Failure
Timing chain becomes loose due to worn sprockets. Mechanic states sprockets appear to be manufacturing defect (too short to properly grasp). Chain slippage can lead to catastrophic engine damage.
When: Reported in owner with vehicle 4 years old and under 80,000 miles
Symptoms owners cite: Engine jerking, stalling, rough idle; Low oil level despite recent service; Eventually engine requires replacement
Repairs/costs cited: Timing chain/belt repair cost $1,800; did not fully resolve underlying engine failure. Subsequent diagnosis determined entire engine replacement needed.
Recalls/TSBs owners mention: No manufacturer response documented in this narrative.
Synthesized from 170 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 2 most recent
Coolant level is on full but the heat does not work. The thermostat is on h, which means the car is overheating. No warning symbols are appearing on the dashboard. I could be driving on a city street the car thermostat indicates the car is overheating.
Excessive oil consumption/ vehicle dies while driving.
Had engine trouble with your 2017 Hyundai Elantra?
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 2017 Hyundai Elantra?
It's a documented issue but not catastrophic. 170 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 60 complaints that reported odometer mileage, most engine failures cluster between 33,779 and 90,000 miles, with the median around 60,000. A quarter of owners report trouble before 33,779; a quarter make it past 90,000. 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/2017/Hyundai/Elantra.
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.