How do Hybrid cars (or any car that ‘cuts off’ when idle) not just blow their starter or have massive wear on the engine?

Question

Basically the title. I was always told most engine damage is done when starting the car, I live in a city and see and hear cars cutting off at every stoplight. How does that not blow the starter or engine?

In: 6

Answer 1

The issue with starting a car is that there is no oil on the metal surfaces and they rub together un-lubricated. With start stop, there isn’t enough time for the oil to drain out of the engine, so all the parts remain lubricated, so no extra wear.

They use much larger starters, and may replace the alternator and starter wth on electric motor (mild hybrid). Instead of a 1hp electric motor, it’ll be 10+ hp. On a full hybrid, the electric motor will have the power to move the car, so no issue just starting the engine.