moped / default rider 183 cm
Vespa LX50 vs Yamaha Sirius FI ergonomics
Vespa LX50 and Yamaha Sirius FI land within a few ergonomic points for the default rider, so the better choice comes down to posture preference and bike category.
Fit verdict
Vespa LX50
95Comfortable
All contacts reached
Yamaha Sirius FI
95Comfortable
All contacts reached
The two bikes are close enough that posture preference matters more than the overall score.
Geometry snapshot
| Spec | Vespa LX50 | Yamaha Sirius FI |
|---|---|---|
| Seat height | 775 mm | 775 mm |
| Wheelbase | 1,280 mm | 1,235 mm |
| Wet weight | 102 kg | 98 kg |
| Displacement | 49 cc | 113 cc |
Posture metrics
Knee angle
- Vespa LX50
- Sport (57.7 deg)
- Yamaha Sirius FI
- Sport (57.6 deg)
Hip angle
- Vespa LX50
- Neutral (97.7 deg)
- Yamaha Sirius FI
- Neutral (98.8 deg)
Elbow angle
- Vespa LX50
- Relaxed (143.3 deg)
- Yamaha Sirius FI
- Relaxed (143.3 deg)
Torso lean
- Vespa LX50
- Neutral (9.5 deg)
- Yamaha Sirius FI
- Neutral (8.8 deg)