Gtechniq Auto G1 ClearVision Smart Glass for Cars, Repels Water off Glass and Windscreens, Easy to Use, Lasts up to 20,000 Miles, 15ml

This is easy to apply, works similar to rainex, cant review longevity yet however its been on a month+ and its still the same as the day it. Get a very tiny amount of wiper judder in mild rain but its next to nothing, its not enough to bother me thats for sure. *Update* the product lasts about 9 months, i applied in August 2024 and come Apr/May it was starting to fade, the vehicle does about 5k a year so not high mileage. It was applied after using cerium oxide to polish the glass, clay bar then Iso alc to clean any residue so i dont believe any other type of application procedure would increase longevity.

Gtechniq G1 is hands-down the best product I've ever used on my car windows. It repels any water effortlessly of the windows and windscreen, especially whilst driving. I've used many different products over the years and Gtechniq G1 has been by far the best. The application of G1 is certainly the easiest I've known and the durability of the product since the application has been superb! Top product from a top company

6 weeks after application and the product is working well. However, the application and preparation process must be very thorough. Shortly after following the instructions and removing the residue, the wiper blades did not run smoothly across the windscreen and were very noisy. Even after a further residue removal, blades still juddered on the screen. I had to buy new wiper blades to restore a smooth function. So be aware of this.

i use this on all our families cars. A 15ml bottle goes a long way. it does recommend to do the windshield thrice but i do 2 coatings on the windshield and 1 coat on all other windows. It lasts up to a year but provides great waterproofing for about 9-10 months before it dwindles down. It makes driving on rainy days that much safer. When applying i use autoglym glass polish to clean the glass first and then apply. The residue is a little tricky to remove and 15ml of the residue remover is not enough. you will have to buff with quite a lot of strength to remove but the results are well worth it. I recommend it to everyone.

Good quality Long lasting

It lasted about 3 months, just under 5,000 miles and 3 car washes (hand wash but with jet sprayer and foam). When it was first applied, it was quite good, to see a real benefit the car has to be doing at least 50mph. The application is really awkward and is done in 3 steps, and you have wait after each one. I didn't mind it as the product was advertised as something that would last a year but 3 months is too short for me. I have cleaned and polished the glass with recommended products, I gave it time to set and followed all instructions, still the outcome was only 3 months. The bottle is really stingy, 15ml is barely enough to cover front and back. Personally, I will try a product which has easier application in the future.

I love Gtechniq but this really hasn’t lived up to the marketing. I prepped the screen exactly as per the instructions. Making sure nothing with left on. Application was easy enough, going vertically across the screen then horizontally, again applying by the book. First problem I encountered was the wiper blades juddering. I cleaned the blades, and applied some of the left over solution onto them, but it didn’t help. Over time the juddering did stop. Longevity - well I do about 4000 miles a year and it was applied about a year back and it’s non existent. No waterproofing at all. Even after 2-3 months dirt, bird droppings etc would weld its self to the screen. Other products, would easily expel dirt after a quick blast with the screen wash, but not this. I really wouldn’t bother applying again, il just go back to using rain x or another product when I next give the car its annual deep clean and protection. A shame as Gtechniq make some real quality products.

Easy to apply to the windscreen, so far it has survived 2 weeks and 2 pressure washer cleans for its price its 100% worth it. It is extremely effective at preventing water and dust from sticking to the windscreen

At first I was not impressed. It took a considerable amount of work to apply. And it rained within days of applying, and unless I was going 50+ mph it did not work very well. Well, wait a week or two and it cured fully? Or it polished? I don't know, but wow! It's been over a month now and this stuff works great. Hardly need wipers at all. Very impressed! Hopefully it lasts the 6 months or so that they state it does.

Not nearly enough for the entire car

Spent a lot of time as per instructions, and after all the prep, no better results than direct Rain Ex application, without all the work, waste of money.

Great product, apply as directed, beads water crystal clear windshield.

The very first step in using this product is to use a different gtechniq product that does not come with it. I had no idea that any other product was even suggested, but ultimately that other product is just a high quality glass cleaner, so you can skip those steps assuming that the glass on your car is clean. I'm very, very happy with the performance of the hydrophobic coating on my windshield. Depending on how much it's raining and how fast I'm driving, I don't have to use my windshield wipers at all because the water will bead up and run off the windshield on its own. Water does not ever form "sheets" on the windshield, it always beads up to small droplets, and if the droplets get too big, then they roll right off the windshield. Applying the product was fairly involved and definitely requires some elbow grease. I would start with the recommended 3 coats for the front windshield, 2 coats for the rear windshield, then use whatever is remaining preferentially on the driver and passenger front windows, then the rear windows. I barely had enough of the coating to get my entire car, which is why I'd recommend making sure that you can get the entire front and rear windshields with enough coats before applying to any windows. Overall I think it took me about 45 minutes to apply, and ~2 months on it still works very very well. I imagine it probably needs to be reapplied every 6-8 months, mostly depending on how long your car sits outside in the elements.