Hacker News Reader

30…40% is very ideal number, 15…25% is often the reality.

A good hybrid can do very well. Presumably by keeping the engine in exactly its sweet spot and designing aggressively for that. BYD for example claims 46% thermal efficiency. [0]

[0] https://ev.com/news/byd-hybrid-efficiency

Yes, hybrids are much more efficient especially in city driving, not so much on highway. I used to drive a Prius back in the day.

Reply on news.ycombinator.com