2018 Chevrolet Sonic problems and complaints
Owners have filed 15 complaints with NHTSA about the 2018 Chevrolet Sonic. The most-reported areas: Electrical System (6), Engine (4), Unknown Or Other (2).
Key takeaways
- 15 owner complaints on file with NHTSA.
- 0 involve a crash, 0 a fire, 0 reported injuries.
- Complaints are unverified owner reports; recalls are confirmed defects.
| Component | Complaints | Share |
|---|---|---|
| Electrical System | 6 | 40% |
| Engine | 4 | 27% |
| Unknown Or Other | 2 | 13% |
| Seats | 2 | 13% |
| Wheels | 2 | 13% |
| Fuel System | 1 | 7% |
| Gasoline | 1 | 7% |
| Air Bags | 1 | 7% |
| Fuel/Propulsion System | 1 | 7% |
| Parking Brake | 1 | 7% |
| Seat Belts | 1 | 7% |
| Visibility/Wiper | 1 | 7% |
One complaint can name several components, so shares add up to more than 100%.
| Version | Overall | Front | Side | Rollover |
|---|---|---|---|---|
| 2018 Chevrolet Sonic 4 DR FWD | 5/5 | 5/5 | 5/5 | 4/5 |
| 2018 Chevrolet Sonic 5 DR FWD | 5/5 | 5/5 | 5/5 | 4/5 |
Latest complaints, as filed
Owner-written and unverified by NHTSA.
Electrical System - filed 2026-10-14
My 2018 Chevrolet Sonic 1.8L has experienced repeated complete battery discharge and electrical failures over approximately two years. The factory infotainment system does not consistently shut down after the ignition is turned off. I must follow a specific shutdown procedure or occasionally remove the infotainment fus...
Engine - filed 2025-07-22
Dear GM Executive Office, I am writing in frustration and disappointment after being told today by Chevrolet Customer Assistance that the case I opened (Case # [XXX]) was simply a "dealer complaint" and that no further help would be offered - despite my vehicle exhibiting a recurring, safety-related malfunction covere...
Fuel System, Gasoline,engine - filed 2025-05-15
The contact owns a 2018 Chevrolet Sonic. The contact stated that while driving at an undisclosed speed, the engine was idling roughly. The contact stated that the check engine warning light was illuminated. Additionally, the contact stated that the vehicle was consuming an excessive amount of fuel. The contact stated t...
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More for the 2018 Chevrolet Sonic
Complaints are reports filed by owners with the National Highway Traffic Safety Administration. NHTSA publishes them without verifying them, and counts rise with how many cars were sold, so compare years of the same model rather than different models. Crash ratings are NHTSA's own 5-Star Safety Ratings results.