Chevrolet Bolt Ev - Problems, Statistics, and Analysis

Chevrolet Bolt Ev owners have reported a total of 1,368 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 Bolt Ev. The 2017 Chevrolet Bolt Ev cars have the most problems reported (467 problems).

Table 1. Total number of problems by model year for Chevrolet Bolt Ev

Model Year	Number of Problems
2027 Bolt Ev	10
2023 Bolt Ev	95
2022 Bolt Ev	98
2021 Bolt Ev	97
2020 Bolt Ev	238
2019 Bolt Ev	244
2018 Bolt Ev	119
2017 Bolt Ev	467

🔍 Common problems of Chevrolet Bolt Ev

The following chart shows the 24 most common problems for Chevrolet Bolt Ev cars. The number one most common problem is related to the vehicle's electrical system (400 problems). The second most common problem is related to the vehicle's steering (260 problems).

Table 2. Common problems of Chevrolet Bolt Ev

Problem Category	Number of Problems
Electrical System	400
Steering	260
Other Fuel System	189
Equipment	120
Power Train	87
Service Brakes	56
Engine And Engine Cooling	44
Vehicle Speed Control	32
Air Bag	25
Visibility	24

Forward Collision Avoidance	19
Suspension	19
Lane Departure	18
Exterior Lighting	17
Seat Belt	14
Structure	10
Back Over Prevention	8
Wheel	8
Seats	7
	3
Tire	3
Electronic Stability Control	3
Hybrid Propulsion System	1
Latches/locks/linkage	1

📉 Compare Reliability Across Model Years Using PPMY Index

It would not be fair to compare the Chevrolet Bolt Ev 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 Bolt Ev 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 Bolt Ev 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.

Table 3. Use PPMY Index to Compare Reliability Across Bolt Ev Model Years

Bolt Ev Model Year	Problems	Sales [1]	Vehicle Age	PPMY Index
2020	238	28,245	6	1.40
2019	244	21,362	7	1.63

📊 Number of Problems Reported During the First Year

Another way to measure the reliability across the model years of the Chevrolet Bolt Ev is to use the total number of problems reported during the vehicle's first year in service, as shown in the Table 4.

Table 4. Number of problems in vehicle's; first service year

Model Year	Problems Reported
2023 Bolt Ev	20
2022 Bolt Ev	42
2021 Bolt Ev	55
2020 Bolt Ev	10
2019 Bolt Ev	20
2018 Bolt Ev	10
2017 Bolt Ev	23

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☘ Bolt Ev Service Bulletins

☤ Bolt Ev Defect Investigations