Here's a graph of my Civic's FC (y-axis) vs. avg speed (x-axis):
- Improvement in FC follows a parabolic curve as average speed increases
- 20 km/L outlier was when I did an eco-run from Manila-La Union
Looking closer at the city driving FC alone:
- Every 1 kph increase during heavy traffic (under 15 kph) has a very sharp improvement in FC
- In moderate traffic (16-20 kph), FC is roughly the same
- Steep linear increase again in FC as avg speed increases in light traffic
Data was from 66 full tanks from a total of over 24,000 km travelled.
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