Let's just take a baby seat, for example, and place it in the Mazda5. Where would it go? Certainly not in the front seat. The third row seat, I believe, will not fit the baby seat either. Hence, the best convenient place will be the second row seat where an adult can sit next to the baby. That makes the Mazda5 only 2 seats left for adult passenger, and 1 for the driver. That's almost pointless. A regular 5 seat car can provide 3 seat for adults with a baby seat in the back. The regular 6 configuration is almost pointless if you have to carry some friends on some very rare and cherishable occasion!
The 6+1 would have make more sense, but it's not coming. And without option such as HID and/or power slide doors, this car won't sell as much as anticipated. A regular 5 seat such as Prius or A3 will be a better deal, or bigger family will make more sense. One is a Toyota with Hybrid technology that can save you gas while having the most minimum required features nowadays (e.g. HID, tire pressure monitoring system, good sound system,...) and be reliable. The other one is an Audi that is just a flashy, trendy, and sporty car.
To really attract some interested buyers, some options must be available to steal some sale from other makers. (group)
Furthermore, if the Mazda5 doesn't have HID as option, Mazda is only telling their customers that if they want HID go buy a Mazda3. Hence, that's why I have refered previously that the Prius and the A3 are a Mazda5 alternative since the 6 seat just don't cut it by itself with manual sliding doors. (chair)
