Every car falls into one of six acceleration brackets - from hypercar territory under 3 seconds to commercial vans above 15. Enter engine power in HP, vehicle mass in kg and drivetrain type. The calculator returns theoretical and estimated real-world 0-100 km/h time plus a power-to-weight classification.
0-100 km/h Acceleration Calculator - Power to Weight Ratio
Every car falls into one of six acceleration brackets - from hypercar territory under 3 seconds to commercial vans above 15. Enter engine power in HP, vehicle mass in kg and drivetrain type. The calculator returns theoretical and estimated real-world 0-100 km/h time plus a power-to-weight classification.
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Every car falls into one of six acceleration brackets
Two numbers define how fast a car accelerates: engine power and vehicle mass. A 150 HP hatchback weighing 1,300 kg reaches 100 km/h in roughly 9.5 seconds. Double the power to 300 HP at the same weight and the time drops to about 5.8 seconds. This calculator uses the kinetic energy equation with drivetrain efficiency correction to estimate both theoretical and real-world 0-100 km/h times, then classifies the result into one of six performance tiers.
Acceleration classification atlas
Where does your car sit? The grid below maps power-to-weight ratio to real-world 0-100 km/h time.
How to use this calculator - step by step
- Engine power (HP) - enter the figure from your registration document or manufacturer spec sheet. Use metric horsepower (PS/HP), not kW.
- Vehicle mass (kg) - curb weight plus driver (~75 kg) and fuel (~30 kg). Check the registration document or manufacturer website.
- Drivetrain - select FWD, RWD or AWD. This adjusts the traction efficiency factor. AWD launches best (0.82), RWD is middle (0.78), FWD loses most to wheelspin (0.75).
- Read the results - theoretical time (physics formula), estimated real-world time (x1.4 correction), performance classification and power-to-weight ratio.
Power-to-weight reference table - 20 popular cars
| Car | HP | Mass (kg) | HP/ton | Drive | 0-100 (real) |
|---|---|---|---|---|---|
| Fiat 500 1.0 Hybrid | 70 | 1,085 | 65 | FWD | 13.8s |
| Dacia Sandero 1.0 TCe | 90 | 1,100 | 82 | FWD | 11.8s |
| Toyota Corolla 1.8 Hybrid | 140 | 1,370 | 102 | FWD | 10.2s |
| VW Golf 1.5 TSI | 150 | 1,355 | 111 | FWD | 8.5s |
| Mazda MX-5 2.0 | 184 | 1,111 | 166 | RWD | 6.5s |
| VW Golf GTI | 245 | 1,430 | 171 | FWD | 6.2s |
| Toyota Supra 3.0 | 340 | 1,570 | 217 | RWD | 4.3s |
| Ford Mustang GT 5.0 | 450 | 1,770 | 254 | RWD | 4.3s |
| BMW M3 Competition | 510 | 1,730 | 295 | AWD | 3.9s |
| Porsche 911 Turbo S | 650 | 1,640 | 396 | AWD | 2.7s |
The physics behind 0-100 km/h
The kinetic energy equation:
t = sqrt( m * v^2 / (2 * P * eta) )
m = mass (kg) | v = 27.778 m/s (100 km/h) | P = power (watts) | eta = drivetrain efficiency
Real-world correction: multiply by 1.4 for tire grip, gear shifts, launch delay and aero drag.
Drivetrain impact on acceleration
| Drivetrain | Efficiency | Launch behavior | Best for |
|---|---|---|---|
| FWD | 0.75 | Weight transfers rearward on launch, unloading drive wheels. Torque steer above 250 HP. | Economy, daily driving, wet roads |
| RWD | 0.78 | Weight transfer loads drive wheels. Better traction but wheelspin risk on high-power cars. | Sports cars, track use, balanced handling |
| AWD | 0.82 | All four tires share the load. Best launch traction, minimal wheelspin. Heavier drivetrain. | High-power launches, winter, SUVs |
FAQ - Frequently asked questions
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