Answer: Either type will be efficient on an average sized lawn. Self propelled mowers take less effort to use. The wheels are power driven so the engine does the work and you just walk behind and guide the mower. Push mowers require a little more physical effort. So, if your lawn is large, you may want to invest in a self propelled mower. It's a personal preference so choose the one you are most comfortable with. Good luck with your mower.
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