ICE: 30% * 92.5% = 27.8% efficient
EV: 50% * 98% * 80% * (100%) * 92.5% = 36.3% efficient.
The problem with the 27.8% ICE system efficiency vs 36.3% EV system efficiency is that you forgot a couple of important factors. 1) ICE vehicles in cities waste 15% to 20% of their fuel idling at stop signs. EVs don't waste energy while stopped. 2) EVs recover a large percentage of their braking energy via regenerative braking. ICE vehicles waste it by heating their brake systems. When these factors are taken into account, the system efficiency of EVs is much more favorable than your post suggests.
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