The AUTOOL automotive anti-theft device has made us feel more secure about our car`s safety .Based on our own experience, it's easy to install and use. The device is compatible with Mercedes-Benz models, and its compact size won't take up much space. The pros of this product are its effectiveness and the fact that it doesn't require any wires or batteries. The cons, however, are that it may not deter determined thieves and it's a bit pricey. Overall, we recommend this product for anyone looking for an added layer of security for their vehicle..