I installed this on
Volkswagen Sharan

Review
My 1st encounter with this product was about 2 years back, when I am still with my previous ride, which has been exposed daily to harsh road conditions, to the extend that I have almost given up on the wiper effectiveness (change wiper a few time in bid to get a clear view but each lasted 1 year), and am still very happy with it, except for the stain left at those area not reachable by the wiper. So I will try to use it before car wash or during heavy shower to minimize that.

What I like
- Very effective cleaning of glass surface
- No adverse effect on the wiper
- Long lasting (1 bottle last me for >1 year)

What I do not like
- Agree with other users that it leave some stain behind on area not reached by the wiper
- The stain on rubber and plastics surface can be tricky to remove
- The price has been going up by >30% in the past 2 years

I installed this on
Nissan Qashqai

Review
Not sure if i should recommend to my friends but just put a Yes first. I poured the exact dosage into the container after reading reviews that will have dried white streaks.

But still, i am encountering this and its very annoying.. Have to always white it off with a wet cloth.

It does works well and cleaned up the windscreen nicely, but sadly, the white streaks are too much for me to continue using this product.

What I like
- Works as it claims
- Clean and clear windscreen
- Easy to use

What I do not like
- White streaks even with proper dosage
- Difficult to clean the streaks off

I installed this on
Mazda 3

Review
It does what it sets out to do. Clean and clear windscreen.
What it does next comes as a total surprise or shocker - the stains on the bonnet, the edges of the windscreen, the stains that follows where the water flows - over the rooftop, driver's window, passenger window, and rear windscreen. The whitish stain makes your car look dirty while leaving only your windscreen clean and clear.
And for the hefty price, you are probably better off with a cheaper brand or just stick to using water.

What I like
Design of the bottle.
Does the job of keeping your windscreen clean and clear.
Gives you a taste of the Sonax experience.

What I do not like
The stains and residue all over the rest of the car.
Normal washing doesn't remove the stains. Requires a wax and polish.
Getting it out of your windscreen water reservoir takes forever.