How much time does driving faster actually save?

On the diminishing returns of faster travel and its impact on time and cost. Adjust speed, distance, and fuel price to see what changes.
Efficiency
Speed
100 km/h
305080100120140200
Outside optimized zone
Diminishing returns: time saved by the next 10 km/h (per 100 km)
The curve is a rate (per 100 km). Trip context below scales the totals.
Trip
Distance
100 km
Fuel price
€1.70 / L
⏳ Time saved by going 10 km/h faster
0.0 min
Extra time saved per 100 km if you increase your speed by 10 km/h.
On this trip: 0.0 min
vs ideal 93.7 km/h: 0.0 min / 100 km
📉 Remaining time-saving potential
0%
How much improvement is still left in the speed curve (30 km/h = 100%, 200 km/h = 0%).
⛽ Fuel cost (this trip)
€0.00
Estimated fuel cost for the selected distance and speed.
Fuel used: 0.00 L
Fuel consumption: 0.00 L/100 km · Cost per 100 km: €0.00
⏱️ Trip duration
0h 00m
Total time for the selected distance at the current speed.
Travel time per 100 km: 60.0 min