Vehicle acceleration

Enter engine power and vehicle mass including driver and load. kW, metric PS and mechanical hp are different units; changing unit converts the current valid power value. Model assumptions let you set the acceleration limit in g and drivetrain efficiency. Defaults of 0.8 g and 85% are adjustable assumptions, not measured vehicle parameters. The estimate updates as you enter valid values.

At launch the model accelerates at most at aMax. Constant wheel power then limits acceleration: a(v) = min(aMax, P/(m·v)); P = engine power × efficiency. Both phases are integrated analytically without time stepping. Launch acceleration is finite. 1 g = 9.80665 m/s². The limit combines traction and available launch force, not a particular tyre’s friction coefficient.

0–60 mph means 96.56064 km/h, not 100 km/h. A quarter mile is exactly 402.336 m, not 400 m. Finish speed is instantaneous at the distance endpoint, not a drag-strip averaged trap speed. Power-to-weight uses engine power and tonnes.

No air or rolling resistance, slope, torque curve, gearing, shifts or rollout. No empirical fitting or reliable prediction of actual vehicles. Results compare these idealized assumptions; changing an input changes the model, not real measurement data.