Four problems related to warnings have been reported for the 2020 Honda Civic. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2020 Honda Civic based on all problems reported for the 2020 Civic.
The collision mitigation braking system consistently detects objects in the road and forcibly brakes when the road ahead of me is completely empty. This has happened 4 or 5 times just in the last year. The first time it happened I was driving on a completely empty road when the cmbs activated and kept slamming on the brakes until I pulled over and restarted the entire car. I don't always have to restart the car every time, but if it ever happens on a busy road it will cause an accident. The dealership refuses to inspect the system or try to recreate the problem despite the fact that there was a class-action suit against Honda for this exact cmbs malfunction in several other models. They just tell me to manually turn it off every time I get in the car. I am human and sometimes I forget, so this is not a solution. I'm afraid that this buggy "safety" system is going to get me and my child killed one of these days. I am happy to have the system inspected, but it doesn't keep a log of every time it activates so there's no real way to verify the false positives, and it happens randomly so it's very hard to recreate.
All safty lights appear on dashboard. Safty functions not enabled.
A lot of times the warning collision on dash will flash to “brake” when going through caution lights usually around fire stations and also approaching steel bridges… I don’t know if it sees the steel deck and thinks it’s a car, but whenever I get in my car, I deactivate the automatic emergency braking system because I don’t want it to automatically brake for me like it’s done in the past.
On multiple occasions, the collision mitigation braking system has had false-positive detections. There is one section of road where this occurs extremely frequently (maybe 20% of the time I drive through). On this section of road, it will not activate the brakes, it only beeps and displays "brake" on the instrument cluster, but is extremely disconcerting and distracting. On another occasion on a different road, there was clear road ahead of me when the collision mitigation braking system had a false detection, and did activate the brakes and was incredibly close to causing a collision with a car driving behind me. On this same stretch of road, ive had this occur two other times (out of hundreds I've driven on it), but no one was behind me and would not have caused an accident. In both of these spots, the road is fairly straight and the speed limit is 40 mph. This hasn't been inspected by a dealer. This hasn't been inspected by Honda, the police, or insurance. There were no prior warnings to this issue occurring.