Gtechniq W9 Water Spot Remover for Cars, 250ml | Advanced Solution Easily Removes Stubborn Water and Silica Spots from Bodywork, Suitable for Glass, All Paint Types and Vinyl

The water marks on my vehicle were tap water and the fact that the water PH was relatively high. This leaves very visible marks on the surface. This product removed them with ease.

Professional product it works amazing definitely recommend

Removes 90 percent of water marks on red paint work.

I bought this product specifically to remove water spots from my car's windshield and windows, and it was a complete failure. I followed the instructions carefully, tried multiple applications, and even used extra elbow grease — nothing. The water spots didn’t fade even a little bit. Not only did it not work, but it also left behind streaks and a hazy film that made the glass look even worse. The smell was strong and unpleasant, and the overall experience was just frustrating. For something advertised as a water spot remover, it did the exact opposite. Total waste of money and time. I’ve had better results using homemade vinegar solutions. Don’t bother with this — it’s all hype and no results.

Does the job on tough water marks in paint work

Seems to work quite expensive for something that resembles vinegar

Excellent, followed the instructions and quickly removed residual water marks from all the paint work

Nothing else would touch the water spots on my black ceramic coated car this stuff worked a treat....coat still functioning as it should, highly recommend it 👍

Works well for me. I highly suggest to spray this onto a damp microfiber applicator and then rub it onto the surface. Especially on glass. Spraying directly onto a spot on a panel kind of concentrates it where it lands unless you have a quick hand to wipe it in. Great water spot remover for the price.

Great product but pricy

Worked perfect

My husband's car was parked by a sprinkler, and we have very hard water, which left water spots horribly on the right side hood fender and partially on the door. I had tried vinegar and other products to try to remove it to no avail. We were told it would have to be professionally buffed out. I received this product today and used it only on the hood and the upper part of the metal between the driverside door and windshield. It completely removed the water spots!! You do have to use a little elbow grease if they are really stuck on there, aka baked on, but it worked and is totally worth the effort! I read comments prior to purchase, and the bad reviews stated it only smells like vinegar, which it does, but I can smell other chemicals in this bottle. As others have commented, this is more than glorified vinegar.

My black truck had to sit outside after getting ceramic coated. I followed instructions to not wash but lightly spray off for major things like bird droppings that could not sit on the paint. After the first was nearly 3 weeks later, I realized I had a pretty significant water spotting issue. Especially on the roof. Washing and light buffing did not help. After doing a bit of research, I found Gtechniq W9 to be highly recommended by several. I'd used some of their other products and the price was right so I gave it a shot. Magic. Significant mineral deposits that were not coming off came off immediately. I let the product sit for no more than 10 seconds, wiped right off and it vanished. Amazing. Highly recommend this product.