Good video quality is the most basic feature - after all, what good is a dash cam if you can’t see details in the footage? Although many dash cams are 1080p, it’s the software and hardware that represent better video quality. Look for a dash cam that is at least 8Mbps in bitrate and with a video sensor that’s at least 1.8MP. Check out the BlackVue DR900S, which has a 4K resolution, 25Mbps, and an 8MP video sensor, for the best video quality dash cam.
Parking mode recording is found from the mid-tier to higher end dash cams, but there are only a few model that offer buffered recording with motion and impact detection. Only the best dash cams offer this very important feature, which allows the dash cam to record even when the vehicle is off, and recording is triggered by motion (when someone walks by) and impact (when the vehicle is hit). The buffering also captures the previous 5-10 seconds of footage that lead up to whatever triggered the recording so the entire event is saved. Check out the Thinkware F800 PRO, which has these features as well as excellent memory partitioning, for the best parking mode recording dash cam.
As dash cams are in the vehicle all year round, it’s important to avoid ones that are battery powered. Batteries can expand and even explode under high heat. The best dash cams use capacitors instead, which handle temperature extremes much more efficiently without issue. You’ll be happy to know that BlackboxMyCar only carries dash cams that have capacitors!