this post was submitted on 03 Feb 2024
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I mean, my gripe is more about the lack of power on the wheels. It's less about the time it takes to re-engage the clutch, more the overall time the clutch is disengaged. I want to accelerate briskly (not flooring it) and then cruise at a steady speed, to achieve maximum fuel efficiency. A good automatic handles this very well, and generally makes driving easier and more relaxed. Sure, changing gear manually and getting the clutch right can be fun, but it's objectively a worse way of doing things.
Dropping 250lbs and removing the torque converter (~2% loss alone) will do more for overall fuel efficiency for your car than anything those automatic transmissions can do.
Yeah, I get that computers + improved automatic modes of transmission control (ex: CVTs or Dual Clutch Transmissions) can improve engagement times. And the removal of the wet-clutch/slushbox of automatic transmissions grossly improves efficiency. But these units are still heavier in practice than a dumb, manual clutch.
I don't think any automatic transmission beats a manual in efficient driving yet. Because weight is king. Automatics (at least, DCTs and CVTs) are finally reaching the response times of a manual transmission by having more direct connection of accelerator pedal to the engine... but the weight issue, cost-issue are still there.
At least modern transmissions basically never brake down anymore. (CVTs, Dual Clutch, and more are all basically going to last the whole lifetime of a typical car).
Tbf the whole argument is basically moot with electric vehicles taking over.