Automatic Car Link

Your car’s onboard computer does more than you’d think, though all that data isn’t readily available unless it’s hooked up to a mechanic’s diagnostic tool – or to an Automatic Car Link. Automatic plugs to your car’s diagnostics port to pull crucial information including fuel economy and fill-ups, plus readily deciphers that cryptic ‘check engine’ light. What’s more, the device packs an accelerometer for crash detection (automatically notifying 911 if you can’t), speaks to your smartphone via Bluetooth 4.0 to rate your driving, keep tabs on your trips, and always remembers where you parked. The best part? No subscription required: it’s all done using your phone’s GPS and data plan.

Get it at Amazon – $100