I realize the eccentric monowiper covers a larger percentage of the windshield than a conventional setup - I was around when the 124 debuted and remember the reviews and advertising. I find this to be a bit of marketing fluff.

Let me ask you this - Do you think every part of the windshield is equally important for the wiper to cover, or do you think it is better to be more thorough directly in front of the driver, but decreases in value to clean the windshield away from the driver? The monowiper misses the top outside corner of the windshield in front of the driver. In exchange it does a thorough job of the passenger side lower corner. Frankly, not the best tradeoff.

A conventional two wiper setup does a more thorough job directly in front of the driver, though it leaves a larger swath uncleaned way over on the passenger side. I find this to be a better tradeoff.

That said, every car I've owned since the middle 1990s has had the monowiper and it gets the job done. Folks in places where it rains really hard have remarked that a two wiper setup does a better job keeping up with a downpour, but it doesn't rain that hard here in Dallas. I still think it was largely a cost driven decision. Perhaps not so much in that the monowiper is less expensive than a conventional setup, but more because they didn't have to design, specify, purchase, and stock parts for two different wiper setups for LHD and RHD. Fewer different parts = lower overall cost.