2014-2019 Toyota Corolla problems are few and rarely a cause for concern. Like most Toyota products, it's generally robust and an excellent buy. It did receive a series of one-off complaints from several buyers, though. These ranged from LED headlights to moonroof and paint-peeling problems. One less common problem that will drive you mad is dashboard rattles. There aren't nearly enough complaints for it to register as common, but a rattling dashboard can really ruin your life.
Normally, problems like these would be cause for concern, but the number of complaints versus the number of Corollas sold makes these problems anomalies rather than the norm. Other anomalies you should be aware of are paint-peeling, alternator, battery, and starter problems. Two less common problems worth keeping an eye out for are the brake and electric power steering problems. A few owners reported grinding brakes, indicating brake-pad wear and failure of the brake master cylinder.
The second is a steering problem or rather an issue with how the steering feels. The latter also relates to a suspension problem. In short, some people did not like the lack of feedback and the rear of the car felt floaty or light. We reckon it's a case of accepting the Corolla for what it is, or it could be as simple as the wrong tire pressure. Enough owners complained about gas caps not closing properly, and Toyota responded with a technical service bulletin. Code P0455 will usually illuminate, but the fix only requires a repositioning of the fuel tank filler neck.
Another common problem you might encounter is the Safety Sense suite not working properly. This is common in cold-weather states, or on cars that are regularly exposed to dirt and dust. The solution to this problem is super easy. You need only keep the sensor on the top of the windshield and the front emblem clean. The lower front sensors are located behind the front badge. Just give these two sensors a wipe, and the car should be good to go.