Why gas consumption differs from highway to city
In: Engineering
Every time you brake you’re literally wasting fuel.
Energy from the fuel that got you moving is now being converted into heat in the brake discs, so you now need to use more to get you moving again.
Accelerating, particularly from a stop is very fuel inefficient.
City traffic is inevitably a lot more speeding up and braking than highway traffic, which is typically pretty steady speed, without much braking, at an efficient gear ratio with the engine sitting at an efficient RPM.
All that adds up to less fuel usage, overall, despite you moving faster.
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