It’s almost impossible to imagine, but the current Bentley Continental GT, convertible or not, has been on the market for 13 years. A series of facelifts have kept the car appealing for those who appreciate the wonderful British craftsmanship mixed with German technology, but it is getting hard to hide its age.

It’s not that anybody’s complaining about the car’s design – it still looks as imposing and unapologetic as i…