TrackMate Realtime GPS Tracker (Dash 3G) is effective for real-time monitoring. Depending on the plan, for instance, the Platinum plan provides real-time alerts every three seconds. The device stores vehicle maintenance records, routing, and scheduling. The reports are user-friendly and can be downloaded, emailed, or printed. See this product in our buyer's guide: Best GPS Tracking Devices For Cars.
MasTrack Live GPS Vehicle Tracker with engine diagnostics is a great little device to give you health updates in addition to GPS tracking. Get unlimited email & text messages for alerts on engine health as well as GPS notifications (requires subscription for $10.99 US per month). Setup zones and get GPS zone alerts notifying you when you vehicle enters or leaves a specific zone. This is great for teen drivers. This product is featured in our buyer's guide: Best GPS Tracking Devices For Cars.