My last Mercedes was tinted at the front windscreen makes a lot of difference.. makes the front sides look darker too. The ZS screen is no where near that... Never got pulled up by Birmingham police (notorious for ripping off tints and fining) in the 7 years of driving it.
Edit
Because it makes the fronts sides look darker...other people get darker fronts (without windscreen) thinking others are doing it, so should be ok to get away with it .. but they don't..cops pull them up usually within a few days of getting them
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