TVS Jupiter 125 vs Yamaha Sirius FI

The TVS Jupiter 125 (2025) and the Yamaha Sirius FI (2025) are compared with the same Moto Kıyas physics model under identical conditions: flat dry asphalt, no wind, a 75 kg rider and no passenger. The TVS Jupiter 125 is a scooter with 125 cc, 8.1 hp and unlisted weight; the Yamaha Sirius FI is a cub / underbone with 114 cc, 8.6 hp and 98 kg. Power-to-weight with the rider: 40.8 hp/ton versus 49.6 hp/ton. On this measure the Yamaha Sirius FI is 22% ahead.

0-100 km/h (speedometer): TVS Jupiter 125 38.88 s, Yamaha Sirius FI not reached (top simulated speed 89 km/h). In the 60-0 km/h brake test, braking distance without the 0.3 s reaction time is 17.9 m for the TVS Jupiter 125 (ABS unknown, class assumption: no ABS) and 18.5 m for the Yamaha Sirius FI (ABS unknown, class assumption: no ABS). The TVS Jupiter 125 stops 0.6 m shorter. The standard 60-0 test is used because one calculated top speed is below 110 km/h. Calculated top speed: 91 km/h (manufacturer claim) versus 88 km/h (estimated from power and drag).

All values are an estimated simulation, not road-test measurements. Technical data comes from the sources listed below; the model uses model-specific parameters calibrated against published road tests for the TVS Jupiter 125 and class-average calibration (no accepted model-specific road test) for the Yamaha Sirius FI. Missing manufacturer data (weight) is estimated by class regression, not measured. Open the interactive app (currently in Turkish) to watch the run side by side and change the load.