I agree you have to use the front washers at speed or they spray over the roof, the worst thing is you can't adjust them. My rear streams down the rear window and seems effective, the only problem is that it continues to drip for ages after I have used it leading to a streak down the rear window.
Its about time all manufacturers put the washers into the wiper arm, spraying just either side of the blade...much less mess
Its about time all manufacturers put the washers into the wiper arm, spraying just either side of the blade...much less mess