# NHTSA Recall 21E060000 — Completion Reports
> **Excessive Ammonia in Tailpipe Exhaust** · Cummins, Inc. · Recalled 2021-08-20
## Latest status
- **Affected units:** 494
- **Remedied:** 339 (68.62%)
- **Unreachable owners:** 0
- **Removed from recall:** 83
- **Latest report:** 2023-07-14 (2023-2)
- **Quarters reported:** 8
## Quarterly progress
| Period | Affected | Remedied | Unreachable | Removed | Completion % | Reported |
|--------|----------|----------|-------------|---------|--------------|----------|
| 2021-3 | 494 | 129 | 0 | 17 | 26.11% | 2021-10-27 |
| 2021-4 | 494 | 218 | 0 | 79 | 44.13% | 2022-01-25 |
| 2022-1 | 494 | 264 | 0 | 83 | 53.44% | 2022-04-26 |
| 2022-2 | 494 | 310 | 0 | 83 | 62.75% | 2022-10-10 |
| 2022-3 | 494 | 319 | 0 | 83 | 64.57% | 2022-10-10 |
| 2022-4 | 494 | 325 | 0 | 83 | 65.79% | 2023-01-20 |
| 2023-1 | 494 | 335 | 0 | 83 | 67.81% | 2023-04-17 |
| 2023-2 | 494 | 339 | 0 | 83 | 68.62% | 2023-07-14 |
## Source
- [NHTSA recall page](https://www.nhtsa.gov/recalls?nhtsaId=21E060000)
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