VV1 type alarm(key coding) is fitted on all 147 but if you want more (VV2 alarm), either you must buy it as an option or, after delivery as an accessorie in the Linea accessori catalogue.
That's the situation in Belgium !
In the Uk where car crime is staggeringly twice as high as almost any other country in Europe, cars cannot be sold without immobilisers only because the insurance companies will not touch them without. equal to Thatcham category 2)Full alarm systems (category 1) are preferred. One of the reasons the 147 lost its manual locking boot in the Uk was because the car couldnt allegedly get Cat 1 status with it - too easy to get in. It is not law to have either system. It will be law to have an immobiliser but volumetrics and voltage drop detectors are optional. Most manufacturers will fit as standard - though Honda and Mini dont on all their cars as far as I know and there are bound to be others.
Volumetrics are hardly ever fitted in France, Italy or Switzerland. Overall car crime is very low.