If you decide to use a Wireless Code Reader that uses Bluetooth or Wi-Fi to link to the OBD-II port, you should download a car scanner app.

The scanners can measure treadwear and provide a 360-view of a car's undercarriage, body, and glass. Rather than have a human come out and do a visual inspection, the scanner can do it ...

A high-tech automated vehicle inspection system is already used by 300 dealerships nationwide. Customers drive through a scanner, receiving a full condition report with potential defects in seconds.

Hertz and other agencies are increasingly relying on scanners that use high-res imaging and A.I. to flag even tiny blemishes, and customers aren’t happy.