Is the 2018 Chevrolet SONIC reliable?

The 2018 Chevrolet SONIC has 23 complaints filed with NHTSA (0.3x the segment average). Our reliability verdict: above-average. Most common issue: ELECTRICAL problems.

What are common problems with the 2018 Chevrolet SONIC?

Top problems: ELECTRICAL (5 complaints, avg repair $500); ENGINE (4 complaints, avg repair $500); SEATS/RESTRAINTS (3 complaints, avg repair $500). Issues typically appear around 50K miles.

Are there any recalls on the 2018 Chevrolet SONIC?

Yes, there are 1 recall(s): SEATS. Contact any Chevrolet dealer to verify if recalls have been completed on your specific vehicle.

How much does it cost to fuel a 2018 Chevrolet SONIC?

The 2018 Chevrolet SONIC gets 30 MPG combined. At current US average gas prices, driving 12,000 miles per year costs roughly $1600. See the interactive fuel cost calculator on this page for state-specific pricing.

How much does it cost to insure a 2018 Chevrolet SONIC?

Estimated US average full-coverage insurance for the 2018 Chevrolet SONIC is approximately $1,511/year (sedan-midsize class). Actual quotes vary heavily by state, driver age, driving record, and credit — see the interactive insurance estimator on this page for state-specific pricing.

2018 Chevrolet SONIC

Problems, Recalls & Reliability Report

Above Average

Quick Summary

The 2018 Chevrolet SONIC has 23 owner complaints filed with NHTSA — that's 0.3x the segment average of 69. The most common issue is electrical problems (22% of all complaints), specifically: my 2018 chevrolet sonic radio screen went black without warning while i was driving. i lost all functions through the radio screen. this happened a second time in route to work within a few days. i'm concerned that the radio may go black during an emergency when i need to use on star.. There is 1 recall issued for this model year.

Total Complaints

Recalls Issued

5/5

Safety Stars

0.3x

vs Segment Avg

Known Problems(top 5 of 8)

ELECTRICAL

5 complaints

22%

• MY 2018 CHEVROLET SONIC RADIO SCREEN WENT BLACK WITHOUT WARNING WHILE I WAS DRIVING. I LOST ALL FUNCTIONS THROUGH THE RADIO SCREEN. THIS HAPPENED A SECOND TIME IN ROUTE TO WORK WITHIN A FEW DAYS. I'M CONCERNED THAT THE RADIO MAY GO BLACK DURING AN EMERGENCY WHEN I NEED TO USE ON STAR.
• HAVING AN ISSUE WITH THE RADIO ITSELF, ITS WENT BLACK A FEW TIMES ON ME AS I WAS DRIVING. AND ALSO WHEN I WAS PARKED. NO RESPONSE ON IT AT ALL. IM AFRAID IF SOMETHING HAPPENS LIKE WHEN IM IN A WRECK AND WHEN I TRY TO CALL ONSTAR WHILE ITS NOT WORKING IM AFRAID OF IT NOT CONNECTING, AND ALSO IVE HAD
• TODAY I'M WRITING IN BEHALF OF CARITE OF OAKLAND PARK I HAD A EMAIL CHAT WITH BRIAN MCCOY THE BRANCH OWNER OF THE COMPANY, I WAS TOLD BY HIM THAT THE CAR WAS PUT IN AS REPO STATUS, DUE TO ME GIVING THE CAR BACK. I FEEL MY LIFE WAS PUT IN DANGER NUMEROUS OF TIMES AND DUE TO THE NEGLIGENCE OF THE COM

Typical onset: 50K miles Est. repair: $500

“MY 2018 CHEVROLET SONIC RADIO SCREEN WENT BLACK WITHOUT WARNING WHILE I WAS DRIVING. I LOST ALL FUNCTIONS THROUGH THE RADIO SCREEN. THIS HAPPENED A SECOND TIME IN ROUTE TO WORK WITHIN A FEW DAYS. I'M CONCERNED THAT THE RADIO MAY GO BLACK DURING AN EMERGENCY WHEN I NEED TO USE ON STAR.”

— NHTSA complaint filing

When Problems Appear on the 2018 Chevrolet SONIC

Based on 12 owner complaints that included an odometer reading. Median mileage at time of complaint: 28K miles. Most complaints cluster in the 0-30K miles range.

Overall complaint distribution by mileage

0-30K

30-60K

60-100K

100-150K

150-200K

200K+

Mileage figures are self-reported by owners in NHTSA complaint filings. Peak bucket = the mileage range with the most complaints for that component; it reflects when owners noticed and reported problems, not necessarily when the fault first occurred.

Recalls (1)

SEATS27/05/2018

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.

Risk: In the event of a rear-impact crash, the seat-back may fail, increasing the risk of injury.

Fix: 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.

Fuel Cost Calculator for 2018 Chevrolet SONIC

Live EIA prices

Annual miles driven: 12,000

Your state (affects local gasoline price)

Per year

$1,600

Per month

$133

Per mile

13.3¢

MPG

City driving (worst-case MPG)

$1,920/yr

Highway driving (best-case MPG)

$1,298/yr

Based on EPA fuel-economy ratings and EIA weekly retail prices (2026-07-20). Real-world cost varies with driving style, trim/engine, terrain, and traffic.

5-Year Gas Price History

EIA weekly retail data · 2021 → today

Show:

Current

$4.00

5-year low

$2.78

5-year high

$5.01

Since 2021

+27%

Source: US Energy Information Administration weekly retail gasoline prices.

Estimated Insurance Cost for 2018 Chevrolet SONIC

Estimate only, not a quote. Modeled from NAIC + HLDI averages for a hypothetical 35-year-old driver with clean record + full coverage. Your actual quote depends heavily on your age, driving history, credit, ZIP code, and insurer.

Your state (affects local premium average)

Full coverage / year

$1,511

Full coverage / month

$126

Liability only / year

$574

vs US avg

-10%

How this estimate is calculated

US base full-coverage premium$1674

× state (US)1.00x

× vehicle class (sedan-midsize)0.96x

× theft risk1.00x

× safety rating0.94x

× vehicle age1.00x

= Full coverage estimate$1511

Coverage assumed: 100/300/100 liability + comprehensive/collision, $500 deductibles. Data sources: NAIC 2024 + HLDI loss studies.

Maintenance & Warranty

Recommended Chevrolet SONIC Service Intervals

Oil change

8K mi / 12 mo

Tire rotation

8K mi

Brake fluid

36 months

Transmission fluid

45K mi

Engine coolant

150K mi

Spark plugs

100K mi

Cabin air filter

23K mi

Engine air filter

45K mi

Differential (AWD/4WD)

45K mi

GM Oil Life System dynamically calculates oil change interval. DEXOS-approved oil required.

"Severe service" conditions (heavy towing, extreme temps, city stop-and-go) typically halve these intervals. Always consult your vehicle's owner's manual for the authoritative schedule.

Chevrolet New-Vehicle Warranty Coverage

Bumper-to-bumper (basic)

3 yr / 36K mi

Powertrain

5 yr / 60K mi

Hybrid/EV battery

8 yr / 100K mi

Corrosion (rust perforation)

6 yr / 100K mi

Roadside assistance

5 yr / 60K mi

These are the terms for a new Chevrolet. If you're buying a used 2018 SONIC, remaining coverage is usually pro-rated from the vehicle's original in-service date. Not all coverage transfers between owners — check with a Chevrolet dealer for VIN-specific remaining warranty.

Estimated Repair Costs

ELECTRICAL(~50K mi)

$500

ENGINE(~50K mi)

$500

SEATS/RESTRAINTS(~50K mi)

$500

OTHER(~50K mi)

$500

WHEELS(~50K mi)

$500

Estimates based on average reported repair costs. Actual costs vary by location, shop, and severity.

🔍 Pre-Purchase Inspection Checklist

Based on 23 owner complaints for this specific year, here's what to check or ask about:

☐
ELECTRICAL: MY 2018 CHEVROLET SONIC RADIO SCREEN WENT BLACK WITHOUT WARNING WHILE I WAS DRIVING. I LOST ALL FUNCTIONS THROUGH THE RADIO SCREEN. THIS HAPPENED A SECOND TIME IN ROUTE TO WORK WITHIN A FEW DAYS. I'M CONCERNED THAT THE RADIO MAY GO BLACK DURING AN EMERGENCY WHEN I NEED TO USE ON STAR.
Typically appears around 50K miles. Repair cost ~$500
☐
ENGINE: TODAY I'M WRITING IN BEHALF OF CARITE OF OAKLAND PARK I HAD A EMAIL CHAT WITH BRIAN MCCOY THE BRANCH OWNER OF THE COMPANY, I WAS TOLD BY HIM THAT THE CAR WAS PUT IN AS REPO STATUS, DUE TO ME GIVING THE CAR BACK. I FEEL MY LIFE WAS PUT IN DANGER NUMEROUS OF TIMES AND DUE TO THE NEGLIGENCE OF THE COM
Typically appears around 50K miles. Repair cost ~$500
☐
SEATS/RESTRAINTS: MY DRIVER SEAT DROPS A LEVEL WHILE I DRIVE . VERY DANGEROUS AND HAZARDOUS.
Typically appears around 50K miles. Repair cost ~$500
☐
OTHER: THE 2018 SONIC IS NOT SAFE TO DRIVE IN THE SNOW. IT HAS NO TRACTION TO START FROM A STOPPED POSITION, NO TRACTION TO STOP AND NO ABILITY TO CONTROL STEERING OR TURNING.
Typically appears around 50K miles. Repair cost ~$500
☐
RECALLS: Verify all 1 recall have been completed — free at any Chevrolet dealer
☐
General: Get a pre-purchase inspection from an independent mechanic ($100-$200)