BMW 6 series It's back! v8 : 333hp : 2005 Fascinating design, thrilling technical features, athletic top-of-the-range performance – precisely these are the ingredients offering four passengers unlimited driving pleasure with only the sky above: Introducing the new 6 Series Convertible, BMW has created a dream car in both its looks and technical highlights. I test drove this car. It was like silk. Though it felt long, it was quite responside. It feels great and very smooth. The rear seats are TINY, but if you need them in a pinch, you know they're there. Not good for very big people. The 6 Series Coupé, stands out through its sheer presence and elegant lines.