Is it bad to turn the engine on and off frequently

[dr. d]

Actually older cars used to have batter voltage meters on the instrument cluster ... Maybe years of study made them remove it since most drivers weren't paying attention to it ... Same thing with the engine temperature gauge ... Many modern cars just have an icon that changes color from blue (cold) to off (normal temp) to red (overheat) ... On some cars there are those fuel economy meters which aren't that much useful here ... Maybe it's used often in other countries ...

nung unang panahon, lahat ng jeep, merong ROX brand voltmeter and/or ammeter. generator kasi noon, at hindi alternator. to monitor generator function.
generators and electromechanical voltage regulators, then, were not as reliable as the next-level solid-state alternators.
old-timers knew how to use these instruments. ...today, how many drivers know...?

personally, i like the analog gauge for my temp indicator.
it's more useful a warning and diagnostic tool, than the idiot light that calls your attention when your car is already overheating, and not when it's about to.

econ lights are nice, but don't pay too much attention to them, and lose your concentration to the traffic in front of the car.