An honest review of any auto company's past must include a look at some of its less glorious moments.
Opel's centenary follows two years of internal uproar - battles between Russelsheim loyalists and a few General Motors International executives in Zurich over the heart and soul of the German company. Thankfully, as the 100th anniversary is marked, that unhappy bit of Opel history is, in fact, history.
GM is letting Opel be Opel and the company's brand values are being restored by the new chairman, Bob Hendry.
It is a brand worth restoring.
Centenaries may seem inconsequential dates on the calendar to some, but they are an opportunity for auto companies to review their heritage. In the brand-obsessed modern auto industry, few things are more important.
To move forward, carmakers must be firmly rooted in the past.
Happy 100th, Opel.