My wife's M2 was getting a smeary windscreen months ago, so I changed them for two bosch (Halfords) ones.
Unfortunately, that hasn't cured the problem. Better, but still leaves a smear on the right side of the windscreen I have bent the arm a tad... no joy.
It seems to be intermittent. but she feels (rightly) it's dangerous as driving into the sun she can't see the road properly.
Should I cut off my arm & leg to purchase ones from Mazda, or what please?
Any suggestions would be much appreciated.

 

Not sure what your definition of "smeary " is? But it appears from your description you need to do a complete detailed glass cleaning which may involve a single edge razor blade and running a overlapping pattern across the complete glass while spraying cleaner. When you have done this at least 2 complete passes do a final regular glass cleaning. This will remove any build up on the glass.

 

thanks for that.
So it looks like a thorough clean of the screen then.
I see on youtube that some guys use clay bars, maybe try that.

 

Clay bar will not work as good as the "BLADE"... and may actually cause more issues. Don't believe all though www DIY vids. If the glass was new like less then a few hundred miles maybe. LOL

 

Thanks for reply again.
It's a late 2015 (65plate) which she bought a year ago.
Not sure what the mileage is now as she's out right now, but It wasn't high for the year when we got it
She only uses it for work and pottering around shopping etc.

 

Here you go I made these this morning just for you.
Please notice that I use a NEWSPAPER for the final wiping.

 

Nicely done sir.
Newspaper eh, my wife uses newspaper & vinegar to clean the inside of our patio doors.
She reckons her mum used to do that

 

Yup I don't because I do not care to have my figures smell like vinegar ... LOL
Actually, the absolute best glass cleaner is a product that is no longer available in the USA. crushed and powdered rice hulls.
The nespaper is old school but sometime old school is new school for many and still supremely works to dry glass.