Audible car alarms still exist, but false alarms and alarm fatigue limit their effectiveness. Modern vehicle security favors engine immobilizers, telematics, GPS tracking, and smartphone alerts. A layered approach - immobilizer plus tracking and good habits - provides better protection than a siren alone.
Modern GPS and hybrid vehicle trackers provide real-time location, geofencing, motion alerts and recovery tools. Choose devices and services that match your vehicle type, coverage needs, and privacy and insurance requirements.
Viper remains a widely used aftermarket car-alarm brand. Modern systems combine sensors, two-way remotes or smartphone control, immobilizers, remote start, and optional GPS tracking to deter theft and aid recovery.
Keyless systems - now powered by rolling codes, transponders, and smart-home protocols - make access easier but require firmware updates, good password hygiene, and awareness of relay and software attacks.
Updated guidance for selecting car alarm systems in 2025: evaluate sensors, immobilizers, vehicle integration (CAN-bus), GPS tracking, app security, installation, and ongoing costs.