# NHTSA Recall 21V259000 — Completion Reports
> **Improperly Heat-Treated Piston Oil Rings** · Kia Motors America · Recalled 2021-06-11
## Latest status
- **Affected units:** 147,249
- **Remedied:** 120,218 (81.64%)
- **Unreachable owners:** 10,150
- **Removed from recall:** 2,537
- **Latest report:** 2023-04-24 (2023-1)
- **Quarters reported:** 8
## Quarterly progress
| Period | Affected | Remedied | Unreachable | Removed | Completion % | Reported |
|--------|----------|----------|-------------|---------|--------------|----------|
| 2021-2 | 147,249 | 13,294 | 509 | 1,729 | 9.03% | 2021-07-19 |
| 2021-3 | 147,249 | 80,457 | 3,792 | 1,706 | 54.64% | 2021-10-21 |
| 2021-4 | 147,249 | 96,876 | 3,960 | 1,945 | 65.79% | 2022-01-18 |
| 2022-1 | 147,249 | 108,521 | 9,118 | 2,741 | 73.7% | 2022-04-18 |
| 2022-2 | 147,249 | 113,267 | 10,234 | 533 | 76.92% | 2022-07-21 |
| 2022-3 | 147,249 | 116,133 | 10,220 | 2,544 | 78.87% | 2022-10-19 |
| 2022-4 | 147,249 | 118,306 | 10,171 | 2,541 | 80.34% | 2023-01-22 |
| 2023-1 | 147,249 | 120,218 | 10,150 | 2,537 | 81.64% | 2023-04-24 |
## Source
- [NHTSA recall page](https://www.nhtsa.gov/recalls?nhtsaId=21V259000)
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