Doesn't this depend on the cars and not the company? For example, BMW has lower end cars which are horrible in comparison to a top end GM car like a high end Cadillac. It's also hard to compare car's like a Tesla Roadster to a car like a Ford Mustang. Obviously the Tesla is more high end, but since there aren't as many its hard to really gauge the amount of problems in comparison to the Mustang which has millions on the road.
In our country, I used to think it's Honda. But lately, I'm keeping a watchful eye on Hyundai. It's showing signs of surging to the top soon.
in my opinion and experience i choose toyota company coz parts of the car are a lot of place to buy when you need one and also easy to maintain the performance of the vehicle
The best company is the one that trying to save the environment by making environment friendly cars Honda off course