We tested vehicles from BMW, Tesla, GM, Ford and Mercedes equipped with advanced driver assistance systems. Here's how they performed.

Skipping to the moneyshot.

The intent of this round-up wasn’t really to pick a winner, but still it’s pretty easy to choose a loser. Three years after its initial beta release, Tesla’s supposed Full Self-Driving still doesn’t live up to its name. As the most expensive option here, it’s easy to single out.

Of the competing ADAS systems, Tesla is the most costly and least reliable.