Dash cam buying guides and comparisons.
Compare four Sony STARVIS 2 dash cams for pickup trucks, commercial work rigs, and semi-truck cabs — checked for rear cable reach, 12V/24V hardwire compatibility, and Keepa sales history.
Compare how buffered motion detection, time-lapse, low-bitrate recording, impact-only sleep, and radar parking modes work — and which hardwire settings keep your footage and battery safe.
A dash cam will not drain your car battery while you drive, but an always-on 12V socket or a low hardwire cutoff setting can flatten a starter battery when parked.
A practical breakdown of front-only and dual-channel dash cams covering rear-end crash evidence, parking-mode power draw, rear cable routing around side curtain airbags, and microSD card demands.
We checked Keepa sales-rank history, Amazon listing prices, and maker specification pages to find four dash cams that were listed under $100.
We compared manufacturer sensor specifications, supercapacitor heat ratings, warranty fine print, and Keepa sales-rank stability to find five reliable dual-channel dash cams for cars.