Hi All:
There doesn't seem to be a lot of discussion about the BV400, so I thought I'd throw out some impressions.
I bought mine a few weeks ago, after having had a PCX160 for about 6K miles. I wanted a scooter that can be comfortable at Interstate speeds, which the PCX just can't do, as it's totally wrung out at about 65mph.
I traded it in on a BV400. There have been literally no Piaggio/Vespa dealers nearer than 300 miles from me, but luckily, a local-ish Kawasaki shop decided to start carrying the brands. I'd considered the semi-equivalent Yamaha and Suzuki models, but, again, availability is a significant issue.
Anyhow, I put enough miles on the BV in a week to get to the first service, which is quick and easy, aside from the common scooter problem of other parts being just in the way enough that the oil/gear oil want to go elsewhere other than straight down. I now have about 2K miles on it -- I ride a lot.
Things I like : The speed is definitely just what I need for the kind of riding I do. I'm regularly at 75mph and the bike still has more oomph left for passing.
The bike handles very well, even in very windy conditions. I can't flat-foot it, but tiptoes are more than enough at stoplights.
It's very easy to do low speed maneuvers, I can do a smooth u-turn in a little less than the width of two parking lot spaces.
It's a remarkably quiet scooter, for 400cc's!
I'm 5'6", and whereas I needed to install a tall windshield + windshield extender on my PCX to be comfortable at extended 55mph+ speeds, the stock BV leaves me in a nice bubble, and I don't even get any helmet buffeting. I may put a taller one with hand protection on when winter rolls around, but we'll see.
The underseat compartment stays remarkably cool, for the times when I'm getting groceries. It's such a contrast to the PCX, which turned into an oven very quickly.
Things I dislike:
The shape of the underseat compartment is too small for my 2XL modular helmet to fit, which I could do on the PCX.
The full shrouds on the handlebars are incredibly annoying. I have a Zumo XT 2 GPS, which mounted easily on the PCX via a RAM mount. I'm currently using a mirror mount, which works, but is less stable than I like.
The shrouds also prevent the use of a helmet hook, which I always used on the PCX. The bag hook on the BV isn't positioned in a way that I can use it for the same purpose.
The electric cooling fan is VERY loud and has a lot of vibration when it turns on. Granted, it only does so when at stoplights for an extended period of time, but it's highly noticeable.
That's about it so far. I've installed a 45L top box and have Givi panniers on it for weekend trips. Looking forward to lots more weekend trips!