| Malfunction | Possible reason |
| Noise and vibration in the gearbox | The powertrain mounts are loose or damaged |
| Excessive shaft runout | |
| Gears are damaged or worn out | |
| Low quality transmission oil is used | |
| Low transmission oil level | |
| Difficulty shifting gears | The gear shift cables are not adjusted |
| The synchronizer locking rings are damaged or worn out | |
| The synchronizer springs are weakened | |
| Spontaneous gear disengagement | The gear shift fork or locking mechanism is damaged |
| Excessive clearance in the splined connection of the clutch and synchronizer hub |
The original source of the article is the website: HyundaiBook