Opel KarlThe Vauxhall Viva city car’s Opel-badged equivalent will be called the Karl – named after one of founder Adam Opel’s sons.

We now understand why GM Europe’s policy of using the same name for all regions was abandoned in this instance.

The Opel Karl will, however, otherwise be identical to the Vauxhall Viva; both budget five-door city cars will go on sale in summer 2015 to offer a cheaper and more practical small car alternative to the three-door Vauxhall/Opel Adam.

“Karl is a short, snappy and catchy name that represents Opel brand values: German, emotional and approachable,” reckons Opel Chief Marketing Officer Tina Muller.

Opel has also revealed a little more detail about the Karl and Viva: they will be 3.68 metres long – fractionally shorter than the Adam – and will be “smart and highly practical”. The firm has again underlined the fact Karl and Viva will be entry-level models, priced below both the Adam and Corsa.

But what about that name – are you pleased Vauxhall saved us from having to say you own a car called Karl?

It may not be the last time Vauxhall and Opel needs to look into its naming policy either: Adam Opel actually had three sons – Carl, Wilhelm and Friedrich…