In theory. But I don’t have a much faith in auto transmissions (effectively a mechanical computer that has to handle many scenarios, probably none perfectly).
My hybrid's auto actually does a pretty good job (2013 V60 D6; diesel front, electric rear axle). And it's a simple 6 gear box, not a fancy 8 or 11 gear twin clutch. Picks a good gear, no hysteresis and the overall control intelligence seems to properly decide when to enter neutral and recuperate (on wildly shifting loads [steep uphill slopes] that "overall intelligence" sometimes tends to be too aggressive with shutting down the diesel altogether, but that's not the transmissions fault).
Most importantly: Your gearbox works the same regardless of your state of mind, regardless of you caring about mpg or not, regardless of you being focused on driving or not. It will just deliver.
Sure, a good driver in the manual version of a car might achieve better mpg than the auto version, but that requires skill and focus and effort. And realistically, a human driver won't deliver 100% of the time, so the auto version will beat the manual version over the long haul, no matter the driver.
I've never understood why it seems meaningful that an automatic can get a tiny bit better mileage. There are a lot of ways to reduce fuel use and/or the overall environmental impact of car operation. Using public transport, biking or walking 1/n trips would accomplish the same goal, and n probably wouldn't have to be very low. There's also the life cycle considerations of manufacturing and disposal of cars. Blahdy blah.
The reason to drive a stick is to drive. Anyone who's never tried it, try it! You become an essential part of the experience, both hands and feet involved and synthesizing related tasks, while you look ahead, anticipate, plan, breathe. You don't need music or the phone or a fridge in the glove box. It doesn't have to be a sports car, anything with a stick will do.
We are in a privileged moment. How long ago was it that cars didn't even exist? How long since they have been really excellent, dynamic, safe(er), powerful, reliable? I'd argue late 80s to about now is the entire window. Already, 2/5 of our appendages are useless to the task, and soon it will be 5/5.
> I've never understood why it seems meaningful that an automatic can get a tiny bit better mileage.
It used to be an argument for stick shifts, that they had better mileage. When I got my license 7 years ago, that "fact" was part of the course. Eco-driving is a mandatory part of both the written test and the practical test, so the "correct" answer if you wanted to pass the test was that you should prefer a stick shift over an automatic, because of fuel economy. Also, if you do your practical test with an automatic, you get a mark on your license saying you are not allowed to drive manuals.
These days, it's factually wrong, so driving students get told wrong things, and spend time learning and doing useless bullshit, and get told to buy the wrong type of car. That pissed me off like no other.
> The reason to drive a stick is to drive.
I agree. That's an honest argument for stick shift. The feeling of driving one. Even though a modern automatic will accelerate faster than you can ever do driving a stick shift. Because everything you can do, a machine can do better...