Had my EX since the end of last week and on the whole, very pleased with it. Regarding the ride, it is definitely on the firm side. On good roads it's absolutely fine, but poorer road surfaces are not handled well with a lot of thumps, crashes and shudders coming through, but that is widely reported in media reviews. It's a car that is definitely in its element in town and urban environments where it is very refined and a nice place to be. It was certainly well able to handle the motorway, but if I spent my life piling on the miles up and down motorways, I'd want something else. If I consider what my real world driving requirement is, that's basically 16 miles per day, that's 8 miles to work and back again, mostly in crawling rush hour traffic, the Jazz is all the car I really need.
The sense of space inside is amazing, you don't feel like you're driving a small car at all, and the drive train is super smooth. Regarding the safety features, I thought I'd at least give RDMS the benefit of the doubt and leave it on at first, but I no longer do so. Going along on roads that I've driven for the last 30 years without the slightest hint of ever being in danger of going off into the verge, with RDMS I was getting shuddering steering wheel and warning flashes coming up all the time, and I actually found it dangerous and stress inducing. It's never a nice feeling wondering what is my car going to do next. There is no way I could live with that, so now I just turn it off every time. Just 4 clicks and it's done, takes seconds, then you're free to drive your car without the anxiety that it's going to do something you're not expecting.
Tried KLAS on the motorway and I found it very twitchy, constantly moving the steering wheel when it was totally unnecessary, so I doubt very much I will use that again. The same system I had on my last 10G Civic was fine and actually really nice to use on the motorway, but in the Jazz it's not as good.
I set the collision mitigation system to "near" as otherwise it flashes warnings for the slightest little thing. If there was a car way down the road slowing down to turn left or right, you'd get a warning even if you're nowhere near it. By setting CMBS to near, it pretty much never intrudes.
Fuel consumption improves with every use. So far it's showing average of 67mpg and I'm sure as the car wears in as time goes on I'll be getting over 70mpg average and that's in normal mode, not eco, so very please with that.
Overall, very happy with my purchase. The Jazz is a really good car if you do the kind of driving for which it's most suited.