The Ion had a lot of road noise coming from the tires, and suspension. on highways there was an audible air noise coming into the cabin.
Not much rear seat room at all, and very little place to put feet. It had theatre style seating, that sat rear passengers higher than the front. This was great for visibility. However, headroom was not very great. The seats were not supportive.
The cars are available at a great price, but beware depreciation.
Depreciation is awful.