The 2018 Chevrolet Sonic is associated with 14 official NHTSA owner defect complaints and 1 safety recall campaign in the federal safety database. The most frequently reported component area is Electrical System, accounting for 2 reports (14% of total complaints). EPA testing covers 8 certified vehicle configurations spanning 1.4l 4-cyl and 1.8l 4-cyl configurations. Gasoline and hybrid variants deliver 28 to 32 MPG combined.

Key Data Findings
  • • NHTSA Owner Complaints: 14 reports
  • • Safety Recall Campaigns: 1 campaign
  • • Top Reported Defect Area: Electrical System (2 / 14%)
  • • NHTSA Overall Safety Rating: 5 / 5 Stars
  • • EPA Efficiency: 28–32 MPG (8 variants)
Data Note: Compiled directly from official NHTSA Office of Defects Investigation (ODI), NHTSA 5-Star Safety Ratings, and EPA FuelEconomy.gov databases.
Fuel Economy
28–32MPG
8 EPA certified variants (1.4l 4-cyl and 1.8l 4-cyl configurations)
Reported Complaints
14
14 submitted owner reports
Safety Recalls
1
1 official NHTSA recall
NCAP Safety Rating
5 / 5 Stars Overall

What is the fuel economy and range of the 2018 Chevrolet Sonic?

Official EPA laboratory test ratings, electric driving range, and annual energy cost estimates by certified vehicle variant

Variant Engine Drivetrain Transmission City Highway Combined EV Range Est. Annual Fuel Cost
Sonic 1.4L 4-Cyl Front-Wheel Drive Manual 6-spd 28 MPG 37 MPG 32 MPG — $1,900 / yr
Sonic 5 1.4L 4-Cyl Front-Wheel Drive Manual 6-spd 28 MPG 37 MPG 32 MPG — $1,900 / yr
Sonic 1.4L 4-Cyl Front-Wheel Drive Automatic (S6) 27 MPG 35 MPG 30 MPG — $2,050 / yr
Sonic 5 1.4L 4-Cyl Front-Wheel Drive Automatic (S6) 27 MPG 35 MPG 30 MPG — $2,050 / yr
Sonic 1.8L 4-Cyl Front-Wheel Drive Manual 5-spd 26 MPG 35 MPG 29 MPG — $2,100 / yr
Sonic 5 1.8L 4-Cyl Front-Wheel Drive Manual 5-spd 26 MPG 35 MPG 29 MPG — $2,100 / yr
Sonic 1.8L 4-Cyl Front-Wheel Drive Automatic (S6) 25 MPG 34 MPG 28 MPG — $2,200 / yr
Sonic 5 1.8L 4-Cyl Front-Wheel Drive Automatic (S6) 25 MPG 34 MPG 28 MPG — $2,200 / yr
Data Boundary Note: EPA specifications are shown by certified vehicle configuration. NHTSA complaints and recall totals are recorded at the model-year level across all configurations.

What are the crash test safety ratings for the 2018 Chevrolet Sonic?

Official 5-Star Safety Ratings evaluated by the National Highway Traffic Safety Administration

Tested Drivetrain / Cab Variant Overall Rating Frontal Crash Side Crash Rollover Rating Rollover Risk
4 DR FWD 12.6%
5 DR FWD 12.6%
Active Driver Assistance Systems (NHTSA Recorded): Forward Collision Warning (FCW) is documented as Optional and Lane Departure Warning (LDW) is documented as Optional in official NHTSA records for tested 2018 Chevrolet Sonic models.
View complete 2018 Chevrolet Sonic crash test & safety breakdown →

What defect complaints are reported for the 2018 Chevrolet Sonic?

Summary of 14 verified consumer defect submissions filed with the NHTSA Office of Defects Investigation (ODI)

Total Complaints
14
Crash Reports
0
Fire Reports
0
Complaints w/ Injury
0
Total Injuries
0

Top Reported Problem Categories

Ranked by total consumer complaint submissions recorded by NHTSA

Electrical System 2 complaints
Air Bags 1 complaint
ELECTRICAL SYSTEM,ENGINE,VISIBILITY/WIPER 1 complaint
ELECTRICAL SYSTEM,FUEL/PROPULSION SYSTEM 1 complaint
ELECTRICAL SYSTEM,WHEELS 1 complaint

Data Attribution & Context: Complaints are self-reported by vehicle owners to NHTSA and represent unverified consumer submissions. Complaint volume does not equal a statistically controlled failure rate and is not adjusted for total vehicles sold or cumulative mileage driven.

View all 2018 Chevrolet Sonic problems & component breakdown (13 categories) →

Are there open safety recalls on the 2018 Chevrolet Sonic?

Manufacturer safety recall campaigns monitored and recorded by NHTSA

NHTSA Campaign #18V342000 Active Recall
Affected Component: SEATS

Defect Summary: General Motors LLC (GM) is recalling certain 2018 Chevrolet Sonic vehicles. A joint in the driver's seat-back frame may not be properly welded, reducing the strength of the seat-back frame.

Free Manufacturer Remedy: GM will notify owners, and dealers will replace the driver's seat-back, free of charge. The recall began June 28, 2018. Owners may contact Chevrolet customer service at 1-800-222-1020. GM's number for this recall is 18178.
View all 2018 Chevrolet Sonic recalls & campaign history (1 campaigns) →
Official US Government Data Provenance

The specifications, safety ratings, defect reports, and recall campaigns published on this page are retrieved directly from official United States Government agency databases:

  • NHTSA Office of Defects Investigation (ODI): Consumer complaints and defect reports.
  • NHTSA New Car Assessment Program (NCAP): Frontal, side, and rollover 5-Star crash safety test ratings.
  • U.S. EPA / FuelEconomy.gov: Standardized multi-cycle dynamometer fuel economy, MPGe, and electric driving range ratings.

Local Production Store Compiled: August 2026 • Deterministic Audited Dataset • Zero Dynamic External API Runtime Latency.