On-demand from customers AWD techniques push the secondary axle by means of an Lively or passive coupling system or "by an independently powered generate technique". The regular notes that occasionally, the secondary drive program might also present the first vehicle propulsion. An instance is actually a hybrid AWD motor vehicle https://groupak.gr/%CF%80%CE%BB%CE%B1%CF%8A%CE%BD%CE%AC-%CF%83%CE%BA%CE%B1%CE%BB%CE%BF%CF%80%CE%AC%CF%84%CE%B9%CE%B1