Front and rear...just in case some slams into the back of you.
We have a hatchback and still put in the rear cam. We got the extra cable to put in so it can record in parking mode, too. I think, all up, with the extra mini SD card and cable, it was about $130...but it's worth it. The dual cam package was about $80 on sale. It's a RedTiger brand, and we haven't had any problems with it. Clear images, too.
ETA: We also got one of the cables that monitor battery/voltage usage while it's parked, that way it shuts off if the power gets too low.
They say to get one that overrides on the SD card when it gets full. Ours is supposed to do that, but for some reason it doesn't, but because we had to install an app on the phone, we just delete the files off of the phone (if we don't need them for insurance purposes.) We do that weekly.
We've had way too many close calls to not have one.
If you can't decide whether or not you should get one, check out r/IdiotsInCars \-- watch a few of those dash cam videos.
I've got a new version of the red tiger front/rear dash cam setup with audio. It was 175. And the SD card it comes with it kind of crap/off brand. Needs upgraded. But the peace of mind. Worth it.
calvin-not-Hobbes
