This Astra A777 2-Way Security System and Keyless Entry with 1 LCD Chrome 5-Button 2-Way and 1 Sleek Chrome 5-Button 1-Way Remotes is compatible with all vehicles including gas and diesel. It has a 12V 6-tone siren a programmable 3-stage anti-carjacking feature and is cellular phone and tracking compatible. It s a great solution for two-car families looking for a remote security/engine-start/keyless-entry system.