My Mk 3 has less reflected glare than my previous hybrid although I did notice some glare a few days ago when the sun was about 30 to 45 degrees to the left of the car's direction (the air vents at the bottom of the windscreen were very noticeable). However, that wasn't where I was looking to see the road ahead. The glare problem on the Mk 2 was exacerbated by the humps and dips over the instruments which resulted in glare with bright / dark patterns. The part of the Mk 3 is more uniform so such reflected glare as occurs is more uniform and easier to look through.
However, I think we ended the discussion about glare in another thread by concluding that the driver's seating position (and hence eyeball location) is a factor in the perceived glare so it is possible that, while the Mk 3 is better for some, it is worse for others. Dar coloured fabric covering is the obvious solution but what car manufacturer has done that?