eli5: why does a car get 35mpg, but a lawn mower 2?

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A car can take a vehicle that weighs 2000lbs 35 miles on gallon of gas, but a lawn mower that weights 35lbs and has one spinning blade only goes 2 or 3 miles before needing a refill.

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Anonymous 0 Comments

Because lawnmowers are wildly inefficient. Just s simple 1 cylinder carbureted engine. No ecu, no direct injection, no variable valve timing, no egr system, no variable spark timing. just suck squeeze bang and blow.

Also low pressure tires over grass vs higher pressure tires over pavement.

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