Chevrolet Sonic owners have reported a total of 846 problems for their cars built in the 8 model years listed in the chart below. The chart shows the number of problems reported across all service years for each given model year of the Chevrolet Sonic. The 2012 Chevrolet Sonic cars have the most problems reported (402 problems).
The following chart shows the 21 most common problems for Chevrolet Sonic cars. The number one most common problem is related to the vehicle's power train (140 problems). The second most common problem is related to the vehicle's engine and engine cooling (125 problems).
|Problem Category||Number of Problems|
|Engine And Engine Cooling|
|Other Fuel System|
|Electronic Stability Control|
|Vehicle Speed Control|
|Traction Control System|
|Unknown Or Other|
It would not be fair to compare the Chevrolet Sonic of an older model year to newer model years since older vehicles have been in service longer and thus are expected to have more problems. In order to compare the reliability across Sonic model years, we use the PPMY index which is defined as the problems reported per thousand vehicles per Year. A smaller PPMY index indicates greater reliability of the given model year cars.
PPMY = P / S / Y * 1000,
where P = total problems reported during the life of a Chevrolet Sonic model year; S = total units sold of the model year; Y = years since the debut of the model year (the age of the vehicle).
The results are shown in Table 3.
Another way to measure the reliability across the model years of the Chevrolet Sonic is to use the total number of problems reported during the vehicle's first year in service, as shown in the Table 4.
|Model Year||Problems Reported|