Reply to post: Re: Energy in = energy out

Mitsubishi 'fesses up: We lied in fuel tests to make our cars look great

Gotno iShit Wantno iShit

Re: Energy in = energy out

You've a very long wait indeed for that. The most efficient engines mankind has devised are approaching 50% efficient. You're not likely to find one that good in a car any time soon, they weight a couple of hundred tonnes and power megaships. Wikipedia says 25-30% for petrol and I guess a bit better for diesel at the car scale so most of our money is still wasted as heat.

Correction after fact check; couple of thousand tonnes. Look up Wartsila-Sulzer RTA96-C.

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