The more I read it, the more I'm convinced it's just human error on the site. There is no reason for it to say ESP with HSA at all, seen as the HSA has nothing to do with ESP. Also, models that actually have HSA, list is separately two lines under the ESP line. I'd put money on that it's meant to say ESP with ABS (or similar) and the web team just typed in the wrong thing. Bit poor that no one had noticed though. Wonder how long it's been like that for?that's what the Customer service chap said that one should look at the brochure not the online configurator.
In my opinion this is pants though - how can an instant medium like a website be slower to change than a brochure that needs designing and printing and distributing... I am really not happy about this. Other wise I would have gone for the Sri without the added stuff that the Active was 'advertised' as having. and only for a grand more