It seems people like to fight against the laws of physics.
I had one customer come in saying the battery life on her 2020 13-inch MacBook Pro is not to her satisfaction. Duh - of course not! A Mac laptop with an Intel processor and a three-year-old battery is not going to have great battery life. Degradation alone (roughly 20%, I later found out using coconutBattery) will negatively affect the experience continuously. The laptop will never be as good as it were fresh out of the box. That’s just the way it is with any device that runs on battery - even that Tesla Model Y of yours.
On top of that, I found out the user prefers to crank up the display brightness to the maximum, with a dozen apps running concurrently. Sorry, even the laptop with the best-rated battery life will suffer under those usage conditions.
Another customer brought in a Dell Precision 7680 workstation laptop complaining of, you guessed it, adverse battery life. He said the battery was draining even when the laptop is plugged into power. Unfortunately, that is by design. That Precision laptop features a desktop-grade Intel processor and an Nvidia RTX secondary GPU. Meaning: it will run very hot and draw lots of power. So much power that the 240-watt AC adapter cannot supply enough juice under full load - hence the aforementioned battery drain.
You cannot buy a glorified gaming PC laptop and then expect excellent battery life. That’s like buying a full-size truck and then complain about the horrible gas mileage. Laws of physics remain undefeated.
Before Nissan.