Overall, not very. Pushbelts tend to wear within a specific zone on their pulleys and much like scooters, eventually start to stick and shifting becomes problematic. The technology may improve over time, but so far the early signs aren’t good compared to the old ‘slush-box’ technology. It isn’t as if the technology is that new actually. Neither is direct injection. Manufacturers tend to be forced to some degree to incorporate “fuel efficient” technologies, forsaking reliability meaning that a car’s expected lifespan is now reduced, resulting in early scrappage and a whole bout of oil consumption required in order to produce a replacement. Such is government mandated “efficiency”.
I haven’t seen a car in 2019 yet which I can fully recommend. 