This page covers 1 recall, 14 owner complaints, NHTSA crash-test ratings and EPA fuel economy for the 2018 Chevrolet Sonic.
28–32 mpg combined
7.4–8.4 L/100km
Compact Cars
Fuel economy data from fueleconomy.gov (EPA / U.S. Dept. of Energy). Annual cost based on 15,000 mi/yr at 55% city driving and current fuel prices. MPG is U.S. gallons; L/100km converted. Ranges reflect the 4 tested variants for this model year.
5/5 Overall
NHTSA 5-Star Safety Rating
Complaints for the 2018 Chevrolet Sonic are spread thin across a small number of reports, so no single system stands out with heavy volume. Engine-related reports describe rough idling, check engine light illumination, excessive fuel consumption, and camshaft concerns that persisted even after dealer visits. On the electrical side, owners report that the instrument cluster shows inaccurate fuel level and mileage readings that fluctuate even while the vehicle is parked. A separate report describes the front passenger airbag deactivating with an adult-weight occupant in the seat, though the dealer found no fault during inspection. With only 14 total complaints on file, most of these patterns appear in just one or two reports rather than a consistent wave of owner feedback.
14
Total Complaints
By System
At a glance
What can fail
A weld joint in the driver's seat-back frame may be incomplete, weakening the frame structure.
What the fix does
Dealers will replace the driver's seat-back assembly at no cost.
Summarized — see the official notice for exact wording, dates, and contacts.
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Driver Assistance
Ratings from NHTSA's New Car Assessment Program (NCAP). Based on 2 tested variants; worst-case ratings shown.
Complaints are owner-reported and reflect individual experiences, not confirmed defects. They are distinct from recalls. Data sourced from the national vehicle safety complaint database. See trending complaints →
