YearToAvoid

2018 Hyundai Sonata Hybrid Reliability Data: Problems & Recalls

Best The 2018 Hyundai Sonata Hybrid ranks best (1 of 15 model years) with a complaint index of 0, 9 complaints, and 1 recall. Engine and electrical issues make up most complaints, but volume is low compared to other years.

Based on NHTSA complaints per model-year, not a reliability rating. Methodology

YearToAvoid Scorecard

Complaint Index
0/100
#15 of 15 Sonata Hybrid years
Verdict
Best
vs. other years of this model
Complaints
9
unique NHTSA reports
Recalls
1
distinct NHTSA campaigns
Crashes
0
reported in complaints
Fires
0
Injuries
1
Top issue
Engine
Best nearby year
2022
rated Best
NHTSA overall rating
5 / 5 ★
EPA combined MPG
41.5
39.5 city / 45 hwy
Injuries / deaths
1 / 0

Top 2018 Hyundai Sonata Hybrid problems

Share of this year’s NHTSA complaints by component group. Groups with 15+ complaints have their own page.

  1. Engine5 (56%)
  2. Electrical System4 (44%)
  3. Collision Avoidance & Cameras2 (22%)
  4. Airbags1 (11%)
  5. Fuel System1 (11%)
  6. Other1 (11%)
  7. Transmission & Powertrain1 (11%)

A complaint can list more than one component, so shares add up to more than 100%. Shares are % of complaints.

What owners report

  • Low-beam headlights create dark, unlit notches that make it hard to see the road ahead, reported shortly after purchase.
  • Some owners describe sudden 'hybrid system failure' messages with total loss of power and stalling while driving at various speeds.
  • One owner reported engine failure with abnormal sounds and a warning light at 75,000 miles, requiring engine replacement.
  • Automatic emergency braking has activated unexpectedly on clear days near underpasses with harsh shadows, with no actual hazard present.
  • A separate power-loss event on the freeway triggered warning lights, a loud beeping sound, and required the vehicle to be towed.
  • Airbags did not deploy in a hard front-right impact at about 45 mph despite significant vehicle damage.
2018 Hyundai Sonata Hybrid complaints: complaints filed per month2Aug 2018May 2019Oct 2019Feb 2022Apr 2022Jun 2022Jan 2024
9 complaints filed with NHTSA from Aug 2018 to Jan 2024; peak Oct 2019 (2).

2018 Hyundai Sonata Hybrid recalls

1 NHTSA recall campaign list this model year.

  1. NHTSA 21V619000Aug 6, 2021Structure & Body348,158 vehicles

    Latches/locks/linkages:trunk lid:latch

    Hyundai Motor America (Hyundai) is recalling certain 2017-2018 Sonata, 2016-2018 Sonata Hybrid, 2018-2020 Accent, and 2016-2017 Azera vehicles. The trunk latch may become damaged, preventing the opening of the trunk from the inside. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 401, "Internal Trunk Release."

    Risk: A person inside the trunk compartment may become trapped, increasing their risk of injury.

    Remedy: Dealers will replace the trunk latch base, free of charge. Owner notification letters were mailed December 4, 2021. Owners may contact Hyundai customer service at 1-855-371-9460. Hyundai's number for this recall is 208.

2018 Hyundai Sonata Hybrid fuel economy and fuel cost

City
39.5 MPG
Highway
45 MPG
Combined
41.5 MPG
Annual fuel cost (EPA)
$1,575
15,000 mi/yr
Fuel
Regular
Current regular gas
$4.32/gal
national avg.

EPA figures; median across configurations of this model year. Estimate your own cost with the fuel cost calculator.

2018 compared with other Sonata Hybrid years

Complaint Index by model year (0 = fewest issues, 100 = most)0255075100’11’12’13’14’15’16’17’18’19’20’21’22’23’24’25
Complaint Index: 0 = fewest issues, 100 = most, relative to other years of this model. Avoid Caution Good Best
YearVerdictIndexComplaintsRecallsMPG
2016Avoid86132540.5
2017Caution5780341
2018Best09141.5
2019No verdict74041.5
2020Good2916149.5

All Hyundai Sonata Hybrid years: best and worst →

Frequently asked questions

Is the 2018 Hyundai Sonata Hybrid reliable?
Based on NHTSA complaints and recalls, the 2018 Sonata Hybrid ranks best among all 15 model years with a complaint index of 0 and only 9 complaints logged.
What problems does the 2018 Hyundai Sonata Hybrid have?
Owners most often reported engine issues (5 complaints, 56% share) and electrical system problems (4 complaints, 44% share), including headlight beam patterns and hybrid system failure warnings.
Does the 2018 Sonata Hybrid have any recalls?
Yes, one recall (campaign 21V619000) covers a trunk latch that may become damaged and prevent the trunk from opening; dealers replace the trunk latch base free of charge.
How does the 2018 Sonata Hybrid compare to other Sonata Hybrid years?
It ranks 1st out of 15 years with a complaint index of 0, far below years like 2012 (complaint index 100, Avoid) and 2011 (complaint index 79, Avoid).
What is the fuel economy of the 2018 Sonata Hybrid?
EPA rates it at 41.5 mpg combined (39.5 city / 45 highway), with an estimated annual fuel cost of $1,575.

Sources: NHTSA Office of Defects Investigation complaint and recall databases; U.S. EPA fuel economy data; NHTSA 5-Star Safety Ratings. Complaints are unverified owner reports.

Data updated Sep 24, 2026. Read the methodology and data sources. The Complaint Index is based on NHTSA owner complaints and recalls; it is not a reliability rating.