RoadVitals

2018 Chevrolet Sonic

Recalls, owner-reported complaints, investigations and safety data

Data refreshed

Owner complaintsComplaints are reports submitted to NHTSA by owners and drivers. NHTSA does not verify most reports before publishing them, and a complaint does not establish that a defect exists. Volume is influenced by how many of a vehicle were sold, how long it has been on the road, and how much attention an issue has received.
14
Latest Jul 22, 2025
Safety recallsA safety recall is issued when a manufacturer or NHTSA determines that a vehicle has a safety-related defect or does not comply with a federal motor vehicle safety standard. Recall repairs are free. Whether a specific vehicle is covered depends on its VIN — a recall listed for a model year does not necessarily apply to every vehicle of that year.
1
Latest May 27, 2018
InvestigationsNHTSA opens an investigation to examine whether a safety defect may exist. An open investigation is not a determination that a defect exists, and many investigations close without a recall. Investigations can, however, lead to one.
0
Crash or fire reportedComplaints whose submitter recorded that a crash or a fire occurred. These are the reporter's own answers on the NHTSA form, not verified findings.
0

Overview

Our database contains 14 NHTSA owner-reported complaints for the 2018 Chevrolet Sonic, most frequently naming the electrical, engine and other / unspecified categories. 1 safety recall has been issued covering this model year; and 817 manufacturer communications are on file.

Complaints are reports submitted by owners and drivers to NHTSA. They are not verified and do not establish that a defect exists.

What owners report

Complaints grouped by the component NHTSA recorded

  • Electrical523.8%
  • Engine419.0%
  • Other / unspecified29.5%
  • Fuel system29.5%
  • Interior & seats29.5%
  • Airbags14.8%
  • Visibility14.8%
  • Brakes14.8%

Percentages are of component mentions. A single complaint can name more than one component, so these do not sum to the total complaint count.

Safety recalls

1 campaign cover this model year

Recalls apply to specific vehicles, not to every vehicle of a model year. Check your VIN with NHTSA or your manufacturer's dealer to confirm whether a recall affects your vehicle.

Check a VIN on NHTSA.gov
18V342000

SEATS

May 27, 2018
71 units potentially affected
The defect: 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.
The risk: In the event of a rear-impact crash, the seat-back may fail, increasing the risk of injury.
The 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.
General Motors LLCManufacturer number 18178View on NHTSA.gov

Recent owner complaints

Reports submitted to NHTSA, shown in the owner's own words

View all 14
Engine
Filed Jul 22, 2025

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 covered under Special Coverage N232395330 - Turbocharger Replacement. To Whom It May Concern, I am writing to formally request a resolution regarding a recurring and unresolved issue with my son’s 2018 Chevrolet Sonic Premier (Turbocharged engine), VIN: [XXX] This past January we brought the vehicle to Ziegler Buick GMC of Lincolnwood an authorized due to overheating and a warning light. We paid $210 for a diagnosis and an additional $520 for a repair, totaling $730. The only action taken was the replacement of the coolant reservoir. The issue was not fully diagnosed, and the root cause was not addressed. On [XXX], the same issue has returned: Red heat warning light illuminated after less than one mile of driving. Coolant reservoir nearly empty upon inspection. Engine went into reduced power (“limp mode”). Scanner showed only a low coolant level but no additional actionable codes. Vehicle also displayed a change oil warning, likely triggered by overheating. This vehicle has a known history of turbocharger and coolant system defects, which have been acknowledged in GM technical service bulletins and Customer Satisfaction Programs. I have reason to believe this situation qualifies for one of those programs. Despite paying $730 for a prior repair, the vehicle is now exhibiting the same safety-related malfunction, putting my son at risk of engine damage and breakdown. We have also taken the car to Mike Anderson Chevrolet twice for inspection and they reported finding nothing. I am respectfully requesting the following: A thorough inspection and diagnosis of the entire cooling system and turbocharger INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOI

NHTSA ID
11675305
Incident
Jul 12, 2025
EngineFuel system
Filed May 15, 2025

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 that the canister purge valve had previously been replaced, but the failure persisted. The vehicle was taken to an independent mechanic, who determined that the canister purge valve needed to be replaced a second time. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 85,000.

NHTSA ID
11661264
Incident
May 14, 2025
Mileage
85,000 mi
Filed Nov 6, 2022

My car has had CAM shaft issues upon buying the car. I have taken the car to Chevrolet in Dallas and in Forney, TX and the car still has the same issue. My car engine check light has remained on and consulting a personal mechanic, they informed me that this could be a recall issue and that I should report it.

NHTSA ID
11492498
Incident
Nov 5, 2018
Airbags
Filed Jun 28, 2022

The contact owns a 2018 Chevrolet Sonic. The contact stated that while a 95-pound passenger was seated in the front passenger’s seat, the air bag system was deactivated. The vehicle was taken to the local dealer who was unable to determine a failure and indicated no failure was found. The manufacturer was notified of the issue. The failure mileage was 15,000.

NHTSA ID
11471326
Incident
Jan 21, 2021
Mileage
15,000 mi
ElectricalFuel system
Filed Apr 30, 2022

The has as well as mileage is not accurate and it constantly changes even while not driving which is adding more miles to car than actually is and you will never know how much gas you have in car truly which is safety concern especially if you are driving on interstate and can’t tell how much gas you have in car and suddenly run out of gas while other are behind you going 70 mph which can cause a wreck

NHTSA ID
11462831
Incident
Mar 1, 2022
BrakesEngineInterior & seats
Filed Oct 12, 2021

The contact owns a 2018 Chevrolet Sonic. The contact stated that operating the vehicle, the front driver side seat would erroneously slide forward causing the driver's knees to make contact with the dash panel. In addition, while driving at various speeds the vehicle had suddenly stalled. The vehicle was taken to the local dealer who diagnosed that the electronic control unit hardware was faulty. Also, the emergency brake cable was hanging low to the ground under the vehicle. The vehicle was not repaired. The local dealer was notified of the failures. The manufacturer was not contacted. The failure mileage was 28,000.

NHTSA ID
11436408
Incident
Oct 1, 2020
Mileage
28,000 mi
ElectricalOther / unspecified
Filed Mar 3, 2021

MY RADIO TURNS OFF AND ON, ON ITS OWN. ALSO WHEN I HAVE MY BLUETOOTH TURNED ON FOR MY PHONE, IT GETS STUCK AFTER I HANG UP THE PHONE AFTER A CALL. I WAS DRIVING HOME FROM WORK ON A STATE ROAD. MY RIGHT WHEEL BEARING WENT OUT AND I HAD TO REPLACE IT LAST YEAR.

NHTSA ID
11398829
Incident
Mar 1, 2021
Mileage
96,000 mi
Seat belts
Filed Sep 1, 2020

THE PASSENGER SEAT BELT DOES NOT CLIP OR WILL COME UNDONE AT ANY GIVEN TIME. I MADE THE DEALERSHIP AWARE OF THE CONCERN WHEN THE VEHICLE HAD APPROXIMATELY 39,000 MILES. THEY STATED THAT SINCE IT WAS OUT OF WARRANTY IT DID NOT QUALIFY FOR PRODUCTION DEFECT. THIS IS A SAFETY CONCERN THAT COULD ENDANGER THE LIFE OF A PERSON IF WEST BELT FAILS DURING A CRASH.

NHTSA ID
11352415
Incident
Nov 1, 2019
Mileage
39,000 mi

Manufacturer communications

A bulletin sent by a manufacturer to its dealers. Not a recall, and repairs are not necessarily free.

PIT5099J

PI to help diagnose A/C concern

PIT3271Q

This preliminary information communicates information about how to determine if a wheel and tires size change is available.

PIP4902V

This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.

PIP6104

This Preliminary information communicates the steps on how to save a GDS2 Session Log and upload to a Technical Assistance Case in CX Connect.

PIP4902U

This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.

PIT5214G

This Preliminary Information communication provides information to the technician about vehicles that have had multiple repair attempts that are being performed on customer’s vehicles that exhibit vibration conditions without utilizing the support of General Motors Technical Assistance Center. If valid vibration frequency or Road Force Variation data has been collected and a repair attempt does not correct the customer complaint, contact General Motors Technical Assistance Center for further support. For any vehicles that remains unrepaired after being at the dealer for three days or more and a related bulletin or PI is not found, contact General Motors Technical Assistance Center for further support.

Manufacturers file copies of the bulletins they send to dealers with NHTSA. These often describe diagnostic or repair procedures for a known condition. They are not recalls: repairs described in a bulletin are usually only free if the vehicle is still under warranty or the manufacturer has extended coverage.

Compare model years

Complaint and recall counts across every year of this model

Chevrolet Sonic by model year
YearComplaintsRecallsInvestigationsIssue Index
2020100036.8
2019800—
2018Viewing141031.0
2017370049.2
2016482057.2
20151143054.6
20141494052.7
20132176159.5
20123537260.4
2011100—

Higher-selling and older vehicles accumulate more reports. Counts are not failure rates and are not directly comparable between vehicles that sold in very different numbers. Older model years have had longer for reports to accumulate.