374 problems have been reported for the 2018 Hyundai Elantra. The following chart shows the 21 most common problems for 2018 Hyundai Elantra. The number one most common problem is related to the vehicle's engine and engine cooling with 129 problems. The second most common problem is related to the vehicle's equipment (46 problems).
In our research we use the PPMY index to compare the reliability of vehicles. The PPMY index of a certain model is defined as the problems reported per thousand vehicles per Year. The total sales of the 2018 Hyundai Elantra in the United States are 232,038 units [1]. If the total number of problems reported by Hyundai Elantra owners in the last 7 years is 374, and the age of the vehicle is 7, the PPMY index can then be calculated as
PPMY Index = 374 / 232,038 / 7 * 1000 = 0.23.
For more information, refer to this page: A study of reliability comparison across Hyundai Elantra model year vehicles.
The following chart shows the number of problems reported during each of the service years since the debut of the 2018 Hyundai Elantra in 2018.
| Service Year | Number of Problems |
|---|---|
| 2025 | |
| 2024 | |
| 2023 | |
| 2022 | |
| 2021 | |
| 2020 | |
| 2019 | |
| 2018 |
When making the decision between buying a new or used Hyundai Elantra, the following table can be used to compare the 2018 Hyundai Elantra with the Hyundai Elantra from other model years. Note that the number of problems reported for the 2018 Elantra is 374 while the average number of problems reported for the 30 model years of the Hyundai Elantra is 383.