| Modèle | Vitesse maximale en avant | Vitesse maximale vers l'arrière |
|---|---|---|
| GTH844 | 27.4 km/h - 17 mile / h | |
| GTH842 | 29 km/h - 18 mile / h | |
| GTH644 | 27.4 km/h - 17 mile / h | |
| GTH636 | 29 km/h - 18 mile / h | |
| GTH6025ER | 30 km/h - 18.6 mile / h | |
| GTH5519 | 24.1 km/h - 15 mile / h | |
| GTH5022R | 30 km/h - 18.6 mile / h | |
| GTH4514EX | 35 km/h - 21.7 mile / h | |
| GTH4017SX | 28 km/h - 17.4 mile / h | |
| GTH4017EX | 35 km/h - 21.7 mile / h | |
| GTH4013SX | 30 km/h - 18.6 mile / h | |
| GTH4013EX | 35 km/h - 21.7 mile / h | |
| GTH3518R | 30 km/h - 18.6 mile / h | |
| GTH3512 | 30 km/h - 18.6 mile / h | |
| GTH3007 | 24 km/h - 14.9 mile / h | 24 km/h - 14.9 mile / h |
| GTH2506 | 24 km/h - 14.9 mile / h | 24 km/h - 14.9 mile / h |
| GTH1056 | 27 km/h - 16.8 mile / h | |
| GTH1048 | 27 km/h - 16.8 mile / h |