2018 Chevrolet Sonic reliability

Is it reliable?

Owners have filed 14 complaints with NHTSA about the 2018 Chevrolet Sonic over 9 years — 2 per year. That is fewer complaints per year than most Sonic years here — under the median of the other years, which is 9. NHTSA has 1 recall on file, including Seats.

2012 Chevrolet Sonic
Photo by Cosmic Console, resized from the original. Wikimedia Commons CC BY 4.0
Complaints

14

Per year

2

Recalls

1

Years on the road

9

What owners report

The complaints owners file most often name Electrical system (5 of 14), then Engine (4) and Seats (2).

Next to 2017 and 2019

The 2017 Sonic has 37 complaints, 4 per year, and the 2019 has 8 complaints, 0 per year. The 2018 has fewer complaints per year than the 2017. The 2018 has more complaints per year than the 2019.

The complaint rate is complaints filed in this year’s first 3 years on the road, divided by however many of those years have passed. Recalls are a separate count. The numbers are for the US-market 2018 Chevrolet Sonic. How we count. Data as of .

Recalls (1)

Recall Seats 2018-05-27 · NHTSA campaign 18V342000
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.
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.

Complaints by component (14 total)

Electrical system
5
Engine
4
Seats
2
Wheels
2
Air bags
1
Exterior lighting
1
Fuel and propulsion system
1
Fuel system, gasoline
1
Parking brake
1
Seat belts
1
Steering
1
Visibility and wipers
1
Show 4 more Show less
Crash-flagged

0

Fire-flagged

0

Injury reports

0

Death reports

0

Complaints filed per year

220183201922020220213202222025
Excerpts from recent NHTSA complaint filings
  • "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…"
    Engine · filed 2025-07-22
  • "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.…"
    Fuel system, gasoline, Engine · filed 2025-05-15
  • "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…"
    Unknown or other · filed 2022-11-06
  • "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…"
    Air bags · filed 2022-06-28
  • "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…"
    Electrical system, Fuel and propulsion system · filed 2022-04-30

NHTSA crash ratings

Version Overall Front Side Rollover
2018 Chevrolet Sonic 4 DR FWD 5 stars 5 stars 5 stars 4 stars
2018 Chevrolet Sonic 5 DR FWD 5 stars 5 stars 5 stars 4 stars

Stars are how this vehicle did in NHTSA crash tests. They are a safety result, separate from the complaint record. Not rated means that test was not run for this version.

Fuel economy

Trim Engine Transmission Drive City Hwy Combined Annual fuel cost
Sonic 1.4L, 4-cyl Automatic (6-speed) Front-wheel drive 27 35 30 MPG $2150
Sonic 1.8L, 4-cyl Automatic (6-speed) Front-wheel drive 25 34 28 MPG $2300
Sonic 1.8L, 4-cyl Manual 5-speed Front-wheel drive 26 35 29 MPG $2250
Sonic 1.4L, 4-cyl Manual 6-speed Front-wheel drive 28 37 32 MPG $2050
Sonic 5 1.4L, 4-cyl Automatic (6-speed) Front-wheel drive 27 35 30 MPG $2150
Sonic 5 1.8L, 4-cyl Automatic (6-speed) Front-wheel drive 25 34 28 MPG $2300
Sonic 5 1.8L, 4-cyl Manual 5-speed Front-wheel drive 26 35 29 MPG $2250
Sonic 5 1.4L, 4-cyl Manual 6-speed Front-wheel drive 28 37 32 MPG $2050

Specs and fitment

1st generation, 2012–2020
Body styles Sedan, Hatchback
Oil 5W-30 (all temps); 0W-30 below -29°C , 4.2 qt capacity
Tire size 195/65R15, 205/55R16, 205/50R17 (trim dependent)

Known issues for this generation

Recall 16V-257 covers certain 2013-2016 Sonic vehicles (and Trax/Spark models named in the campaign) with Bring Your Own Media radios: the radio may fail to sound the key-in-ignition warning chime. Dealers update radio software. Recall 16V-422 covers certain 2015-2016 Sonic vehicles with the same radio type: the radio may fail to chime for an unfastened seat belt; dealers update software. Recall 18V-342 covers certain 2018 Sonic vehicles: a joint in the driver seat-back frame may not be properly welded; dealers replace the seat-back.

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Frequently asked questions

Is the 2018 Chevrolet Sonic reliable?

Owners have filed 14 complaints with NHTSA about the 2018 Chevrolet Sonic over 9 years — 2 per year. That is fewer complaints per year than most Sonic years here — under the median of the other years, which is 9. NHTSA has 1 recall on file, including Seats.

What are common problems with a 2018 Chevrolet Sonic?

The complaints owners file most often name Electrical system (5 of 14), then Engine (4) and Seats (2).

Is the 2018 Chevrolet Sonic more reliable than the years next to it?

The 2017 Sonic has 37 complaints, 4 per year, and the 2019 has 8 complaints, 0 per year. The 2018 has fewer complaints per year than the 2017. The 2018 has more complaints per year than the 2019.

Has the 2018 Chevrolet Sonic been recalled?

The 2018 Chevrolet Sonic has 1 recall on file with NHTSA. See the recalls table on this page for dates, components, and remedies.

How many complaints have owners filed about the 2018 Chevrolet Sonic?

Owners have filed 14 complaints about the 2018 Chevrolet Sonic with NHTSA.

What mpg does a 2018 Chevrolet Sonic get?

EPA-rated combined fuel economy for the 2018 Chevrolet Sonic is 29.8 MPG. See the fuel economy table on this page for city and highway figures by engine and transmission.

What generation is the 2016 Chevrolet Sonic?

1st generation (2012-2020) for the US years this site tracks.

What oil does a Chevrolet Sonic take?

US notes list 5W-30 for all temperatures, with 0W-30 as an alternative below -29°C.

What tire sizes does a Chevrolet Sonic use?

Common US sizes include 195/65R15, 205/55R16, and 205/50R17 depending on trim.