scooter / default rider 183 cm
Vespa 946 vs Vespa ET4 150 ergonomics
Vespa 946 and Vespa ET4 150 have modeled posture scores within three points for the 183 cm default rider. Treat this as a planning estimate; posture preference, data confidence, and a real test sit still matter.
Modeled fit comparison
Vespa 946
All contacts reached
Vespa ET4 150
All contacts reached
The modeled scores are within three points, so the result does not distinguish a higher-scoring bike. Treat the result as a planning estimate and compare each bike's geometry confidence before a real test sit.
Rider fit: reaching the ground
The Vespa 946 lists a 805 mm seat; the Vespa ET4 150 lists 805 mm, within a few millimetres of each other. Seat height is only a first-pass ground-reach input. It does not establish safety or actual foot contact. Seat width, suspension sag, boots, mobility, load, and individual proportions can materially change the result.
Geometry snapshot
| Spec | Vespa 946 | Vespa ET4 150 |
|---|---|---|
| Seat height | 805 mm | 805 mm |
| Wheelbase | 1,405 mm | 1,280 mm |
| Wet weight | 157 kg | - |
| Displacement | 150 cc | 150 cc |
Posture metrics
Knee angle
- Vespa 946
- Sport (58.0 deg)
- Vespa ET4 150
- Sport (57.7 deg)
Hip angle
- Vespa 946
- Neutral (95.0 deg)
- Vespa ET4 150
- Neutral (97.7 deg)
Elbow angle
- Vespa 946
- Relaxed (143.3 deg)
- Vespa ET4 150
- Relaxed (143.3 deg)
Torso lean
- Vespa 946
- Neutral (11.4 deg)
- Vespa ET4 150
- Neutral (9.5 deg)