scooter / default rider 183 cm
Vespa Sprint 150 vs Yamaha Aerox 155 ergonomics
Vespa Sprint 150 and Yamaha Aerox 155 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 Sprint 150
All contacts reached
Yamaha Aerox 155
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 Sprint 150 lists a 790 mm seat; the Yamaha Aerox 155 lists 790 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 Sprint 150 | Yamaha Aerox 155 |
|---|---|---|
| Seat height | 790 mm | 790 mm |
| Wheelbase | 1,340 mm | 1,350 mm |
| Wet weight | 132 kg | 126 kg |
| Displacement | 155 cc | 155 cc |
Posture metrics
Knee angle
- Vespa Sprint 150
- Sport (57.8 deg)
- Yamaha Aerox 155
- Sport (57.8 deg)
Hip angle
- Vespa Sprint 150
- Neutral (96.5 deg)
- Yamaha Aerox 155
- Neutral (96.2 deg)
Elbow angle
- Vespa Sprint 150
- Relaxed (143.3 deg)
- Yamaha Aerox 155
- Relaxed (143.3 deg)
Torso lean
- Vespa Sprint 150
- Neutral (10.4 deg)
- Yamaha Aerox 155
- Neutral (10.6 deg)