There's now performance under the bonnet of the Astra to match its striking new exterior design. A total of 221bhp, in fact. But no, this isn't a new Opel Performance Centre. It's instead called the Opel Astra GSe. And as the name suggests, it's electrified. Powering the new car here is a turbocharged 1.6-litre engine paired to a plug-in hybrid...