Owners consistently report fuel-line cracking in the low-pressure feed line connecting the pump to the direct-injection system. Heat in the engine bay causes the hose to crack gradually; fuel leaks into the compartment, creating a strong gasoline odor and visible dripping. One owner's fuel inspection revealed the entire engine bay saturated with gasoline. A 200,000-mile vehicle caught fire—grey-blue smoke, then flames from under the hood, fire department response required. Another owner's son smelled smoke, heard screeching at low speed, and jumped out with his family; the vehicle was totaled.
Stalling and hesitation during acceleration appear linked to fuel-system failure. Vehicles stalled at 10 mph, 55 mph, and highway speeds, requiring restart or towing. One owner heard a loud engine noise and saw a dark smoke cloud while accelerating.
The dominant complaint across 37 narratives is parts unavailability. Hyundai issued NHTSA Campaigns 20V121000 and 22V312000 (Fuel System) years ago, but dealers consistently report the repair part is backordered—weeks to months, with no clear end date. One owner said the part might take "a month or maybe more," making the vehicle undrivable due to fire risk. Owners received recall notices but cannot get the fix applied, leaving them driving vehicles Hyundai itself flagged as hazardous.
Failure modes owners describe
Fuel-line cracking and rupture
Low-pressure fuel hose or feed line develops cracks due to ambient engine-compartment heat, allowing fuel to leak into the engine bay. Owners report strong fuel odors, visible fuel leaks near the high-pressure fuel pump, and fuel spread throughout the vehicle.
When: 40,000 to 200,000 miles; cracking develops gradually over time
Symptoms owners cite: Strong fuel odor inside and outside vehicle; Visible fuel leak in engine compartment; Gasoline spread throughout vehicle; Smoke from under hood
Repairs/costs cited: Low-pressure fuel hose or entire fuel line replacement required; owners cite temporary fixes and parts on backorder (up to one month or longer). One owner reported high-pressure hose used to clear fuel as temporary measure.
Recalls/TSBs owners mention: NHTSA Campaign 22V312000 (Fuel System, Gasoline) issued; also Campaign 20V121000. Recall parts unavailable on widespread basis. Some owners told by dealers failure not related to recall. One owner told failure not included in any recall.
Engine compartment fire
Leaking fuel in engine bay ignites, creating fire that spreads from engine compartment. Fire department response required in at least one case. Property damage to driveways reported.
When: 200,000 miles (one documented case); can occur at lower mileages given fuel-leak conditions
Symptoms owners cite: Grey/blue smoke from engine bay; Fire under vehicle; Fire droppings from underneath vehicle; Front passenger tire blowout from fire heat
Repairs/costs cited: Vehicle destroyed by fire; not repaired. Fire extinguished by fire department.
Recalls/TSBs owners mention: NHTSA Campaign 22V312000 (Fuel System, Gasoline); recall never completed because owner was unaware of it.
Vehicle stalling and hesitation during acceleration
Engine stalls without warning or hesitates when accelerator is depressed, requiring vehicle restart or tow. May occur after fuel-system inspections without repairs. One instance involved loud engine noise and dark smoke cloud.
When: 40,000 to 197,400 miles
Symptoms owners cite: Vehicle stalls while driving at low speed (10 mph) and highway speeds (55 mph); Vehicle hesitates when accelerating; Requires two or more restart attempts; Loud noise from engine during hesitation; Dark smoke cloud observed
Codes mentioned: Check Engine Light illuminated (multiple cases)
Repairs/costs cited: No repairs completed in most reported cases. One case required engine replacement after stalling incident. Fuel-line leak diagnosed as cause in one case.
Recalls/TSBs owners mention: NHTSA Campaign 20V121000 and 22V312000 (Fuel System, Gasoline) referenced by owners; most cases occurred after inspection without repair due to parts unavailability.
Recall repair parts unavailability
Hyundai issued recalls (20V121000, 22V312000, 18V934000) but repair parts remain unavailable for months or indefinitely, leaving vehicles unrepaired and owners without parts-availability timeline from manufacturer. Widespread across multiple dealers and regions.
When: Ongoing; complaints span years with no resolution stated
Symptoms owners cite: Recall notification received; Dealer confirms parts not in stock; Manufacturer unable to provide parts-availability date; No alternative repair or interim solution offered
Repairs/costs cited: No repairs possible; vehicles remain unrepaired pending parts arrival.
Recalls/TSBs owners mention: NHTSA Campaigns 20V121000 (2020), 22V312000 (2022), and 18V934000 issued but remedy parts unavailable. Manufacturer has not provided clear timeline for parts availability in any narrative. VIN tool confirms parts not available across multiple cases.
Engine seizure
Engine seized without warning while driving at highway speed, triggering Check Engine warning light. Related to fuel-system failure in context of recall campaign 18V934000 (Engine, Fuel System, Gasoline).
When: 88,000 miles
Symptoms owners cite: Engine seized while driving 60 mph; Check Engine warning light illuminated
Codes mentioned: Check Engine Light
Repairs/costs cited: Recall parts unavailable; vehicle not repaired. Independent diagnosis not provided.
Recalls/TSBs owners mention: NHTSA Campaign 18V934000 (Engine, Fuel System, Gasoline); parts unavailable.
Synthesized from 37 NHTSA owner complaints — unverified consumer
allegations, summarized for patterns. The verbatim filings appear below.