Showing the 2015 Sonic LTZ. We haven't verified this trim's engine; the numbers below cover every version of this model year. Every version
Owner complaints, recalls, fuel economy and safety ratings from public NHTSA and EPA data, updated Oct 17, 2026.
Fuel economy
28–32 mpgcombined; city 24–28, highway 33–38; every version of this model year
Five years of fuel
$10,150–$11,600U.S. average; Ohio $9,070–$10,370 at local prices; every version of this model year; fuel only, not other costs of owning it; 15,000 miles a year, at EIA fuel prices for the week of Oct 12, 2026
NHTSA's VIN data lists these trims for the 2015 Sonic. A trim's engine and numbers are shown as its own only where EPA names versions after the trim and no other version could be it; "seen with" means a source shows that engine on the trim, not that it was the only one. Recalls and complaints cover the whole model year: whether a recall applies to a car depends on its VIN, on NHTSA's recall lookup.
Owners have filed 114 complaints with NHTSA about the 2015 Sonic. These are unverified owner reports, counted by the part of the car they name; one complaint can name several parts. Counts aren't adjusted for how many were sold, so they don't show how reliable a car is.
Complaints by part of the car
Part
Complaints
Crashes
Fires
Injuries
Electrical system
34
1
1
0
Air bags
27
10
1
13
Engine
23
0
0
0
Unknown or other
22
1
0
4
Fuel/propulsion system
12
0
0
0
Power train
12
0
0
1
Steering
6
2
1
0
Electronic stability control (ESC)
4
0
0
0
Equipment
4
0
0
0
Engine and engine cooling
3
0
0
0
Exterior lighting
3
1
0
0
Service brakes
3
2
0
1
11 more parts
Wheels
3
0
1
0
Latches/locks/linkages
2
0
0
0
Seat belts
2
0
0
0
Seats
2
0
0
0
Service brakes, hydraulic
2
0
0
0
Structure
2
1
0
0
Lane departure
1
0
0
0
Suspension
1
0
0
0
Tires
1
0
0
0
Vehicle speed control
1
0
0
0
Visibility/wiper
1
0
0
0
Complaints by model year
Newer years have had less time to collect complaints, and counts aren't adjusted for sales, so a shorter bar doesn't mean a more reliable year.
NHTSA lists 3 recall campaigns for the 2015 Sonic over its history. Campaigns are matched by model and year, so each one may apply to a given car, and its repair may already be done: check a VIN on NHTSA's recall lookup for the open recalls on that exact car.
General Motors LLC (GM) is recalling certain model year 2015-2016 Chevrolet Sonic and Trax, and 2013-2015 Spark vehicles equipped with a Bring Your Own Media radio. The affected radios may fail to provide an audible warning chime when the driver fails to fasten their seatbelt or if the driver leaves the key in the ignition. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) numbers 208 "Occupant Crash Protection" and 114 "Theft Protection."
Risk: Without audible indicators, the driver may not fasten their seatbelt, increasing the risk of injury during a crash.
Remedy: GM will notify owners, and dealers will update the radio software, free of charge. The recall began on July 22, 2016. Owners may contact Chevrolet customer service at 1-800-222-1020. GM's number for this recall is 45340.
General Motors LLC (GM) is recalling certain model year 2013-2016 Chevrolet Sonic and Trax vehicles and 2013-2015 Chevrolet Spark vehicles equipped with a Bring Your Own Media radio. The affected radios may fail to provide an audible warning chime when the driver, after turning off the ignition and leaving the key in the cylinder, waits 10 minutes or longer to open the door. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 114 "Theft Protection."
Risk: Without audible indicators, the driver may leave the key in the ignition, increasing the risk of theft.
Remedy: GM will notify owners, and dealers will update the radio software, free of charge. The manufacturer has not yet provided a notification schedule. Owners may contact Chevrolet customer service at 1-800-222-1020. GM's number for this recall is 17130.
General Motors LLC (GM) is recalling certain model year 2014-2015 Chevrolet Spark vehicles manufactured April 30, 2014, to May 20, 2015, and 2015 Chevrolet Sonic vehicles manufactured June 18, 2014, to June 10, 2015. In the affected vehicles, equipped with the base radio and OnStar, the radio may lock up due to a software issue, causing the display to go blank and all audio functions to cease. Because of this, there may be no warning chimes such as the reminder to buckle the seat belt and the key being left in ignition when the driver goes to exit the vehicle. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) No. 208 "Occupant Crash Protection", and 114 "Theft Protection."
Risk: Without audible indicators, the driver may leave the key in the ignition, increasing the risk of theft. If a driver or front passenger does not buckle their seat belt, there would be no chime to remind them to fasten their seat belts. If a driver or passenger does not buckle their seat belt there is an increased risk that they will be injured in a crash.
Remedy: GM will notify owners, and dealers will update the radio software, free of charge. The recall began on August 11, 2015. Owners may contact Chevrolet customer service at 1-800-222-1020. GM's number for this recall is 15504.
Carmakers sent NHTSA 1,332 service bulletins and notices that cover the 2015 Sonic, the latest on Sep 26, 2026. They tell dealers how to fix known issues.
The parts they mention most: equipment (579), electrical system (283), engine and engine cooling (150), engine (122), power train (92).
NHTSA hasn't opened a defect investigation that covers this model year.
Maintenance
Oil
The owner's manual gives the oil and how often to change it. We show oil facts only once we've checked them against the manual, and we haven't yet for the 2015 Sonic.
These are searches on those sites; we don't copy or check their listings. Your ZIP is used for these links and never kept.
Specs
EPA class: compact cars. EPA greenhouse gas score: 7–8 out of 10. Each version EPA tested:
Swipe the table sideways for more columns.
Version
Engine
Transmission
Fuel
City / hwy / comb
Sonic Front-Wheel Drive
1.4 L, 4 cyl, turbo
Manual 6-spd
Regular Gasoline
28 / 38 / 32
Sonic Front-Wheel Drive
1.4 L, 4 cyl, turbo
Automatic (S6)
Regular Gasoline
27 / 36 / 30
Sonic Front-Wheel Drive
1.8 L, 4 cyl
Manual 5-spd
Regular Gasoline
26 / 34 / 29
Sonic Front-Wheel Drive
1.8 L, 4 cyl
Automatic (S6)
Regular Gasoline
24 / 34 / 28
Sonic 5 Front-Wheel Drive
1.4 L, 4 cyl, turbo
Manual 6-spd
Regular Gasoline
28 / 38 / 32
Sonic 5 Front-Wheel Drive
1.4 L, 4 cyl, turbo
Automatic (S6)
Regular Gasoline
27 / 36 / 30
Sonic 5 Front-Wheel Drive
1.8 L, 4 cyl
Manual 5-spd
Regular Gasoline
26 / 34 / 29
Sonic 5 Front-Wheel Drive
1.8 L, 4 cyl
Automatic (S6)
Regular Gasoline
24 / 34 / 28
Sonic 5 RS Front-Wheel Drive
1.4 L, 4 cyl, turbo
Manual 6-spd
Regular Gasoline
26 / 33 / 29
Sonic 5 RS Front-Wheel Drive
1.4 L, 4 cyl, turbo
Automatic (S6)
Regular Gasoline
25 / 33 / 28
Sonic RS Front-Wheel Drive
1.4 L, 4 cyl, turbo
Manual 6-spd
Regular Gasoline
26 / 33 / 29
Sonic RS Front-Wheel Drive
1.4 L, 4 cyl, turbo
Automatic (S6)
Regular Gasoline
25 / 33 / 28
Sources and dates
U.S. EPA fuel economy data, file of Sep 29, 2026
NHTSA owner complaints, file of Oct 17, 2026
NHTSA recalls, file of Oct 17, 2026
NHTSA manufacturer communications, file of Oct 17, 2026
NHTSA defect investigations, file of Oct 17, 2026
NHTSA 5-Star Safety Ratings, file of Aug 7, 2026
U.S. Energy Information Administration, file of Oct 12, 2026
Fuel cost: EPA mpg with fuel prices for the week of Oct 12, 2026 and electricity prices for Jul 2026. Source: U.S. Energy Information Administration (Oct 2026). Complaints are unverified reports owners filed with NHTSA. About the data