Could be true in driving conditions of cities like Chennai.
.. but this could be best thread to discuss..
In my opinion, for un-natural driving conditions mileage should be calculated in terms of liters/hour instead of kmpl. People use this convention for diesel pumps used in farms etc to calculate fuel consumption. Or may be someone should invent a complex calculation considering both the above. Let us consider a 10km stretch within city limits for illustration.
Scenario1: Offpeak hours (at an average speed) you might be able to cover the distance in 25-30 minutes. Scenario2: Peak hours (bumper to bumper traffic) you might take 60 minutes to cover the same distance.
For the same distance in scenario 2:
1. The car needs to be running for double the time
2. More gear shifts
3. More acceleration / deceleration cycles
Considering above, if a car returns 20kmpl in Scenario1, it will only return 7 or 8 kmpl in Scenario2.
Even while planning trips, I always give higher priority to a route which is faster than a route which would be shorter. IMO
, even if a route is 10% shorter, you can save fuel by taking a faster route.
Friends - your thoughts ?