Gas cars have absolutely zero issues starting in the cold, unless the battery is not good enough, or the car has another mechanical issue. EG, the car is broken.

To say it's because of the cold, is like saying they have trouble driving on flat tires too.

As a Canadian, who's been driving cars down to -45C mornings for decades, they just start. Older cars, and I don't mean "cars that have aged" but instead "cars from the 60s or 70s" sometimes needed a "block heater", which was basically just a fat resister you'd plug into AC. It kept the engine block warmer.

However I must reiterate... that's not commonly required any more. Not for 50 years.