Gtechniq Car Shampoo. Auto W1 GWash Shampoo for Cars. Dirt and Stain Remover Car Cleaning Kit with Pink Grapefruit Fragrance. 100% Biodegradable Foam Cleaner, Wheel Cleaner and Screen Wash - 5L

I've tried countless car shampoos, but Gtechniq's W1 GWash has completely transformed my detailing routine. After receiving a sample pack at a car show, I was immediately impressed by the product's performance.What sets this shampoo apart:Ultra-concentrated formula means a little goes a long wayExceptional cleaning power without stripping wax or sealantspH-neutral formula that's gentle on paintworkCreates incredible lubrication for safe, scratch-free washingLeaves an immaculate, streak-free finishI've used this on my 911 and several other vehicles, and the results are consistently outstanding. The suds are rich and thick, making the washing process not just effective but enjoyable. Whether you're a car enthusiast or just want a professional-grade clean, Gtechniq W1 GWash is a game-changer.Highly recommended for anyone serious about maintaining their vehicle's appearance.Pros:Professional-grade performanceEconomical concentrateSafe for all paint typesCons:Slightly more expensive than standard car shampoos (but worth every penny)

Very good productMake good foaming.Makes my car very shine, appears to be waterproofing and is functional.Good value for what it does.

You don't need a lot in the bucket to get a really good foamy lather for the cleaning stage of your wash. Two capfuls in a large bucket, whizz it up with the jetwash and you're all set. I spray the foam on the car and while I'm waiting for that to do it's thing I make this up in the bucket and by the time I've rinsed the foam and do the wash this is still full of bubbles. It might be expensive for the size of the bottle but it does a quality job of cleaning and it value for money when you consider how little you actually need for each wash.

This is a very good car shampoo. It is very soapy and cleans the car well, but I have used better soaps before. I will look elsewhere when it comes to replacing it, but my car does look very clean when I have used it.

I’ve been using Gtechniq W1 Auto Wash for several weeks now, and it’s quickly become one of my go-to car shampoos. As someone who takes pride in maintaining their vehicle properly, I look for products that offer great cleaning power without compromising paint protection—and W1 delivers on all fronts.This shampoo produces low suds, which may surprise those used to thick foaming shampoos, but don’t be fooled—its cleaning performance is excellent. It effortlessly lifts dirt and road grime without needing excessive product, meaning a little goes a long way. It rinses cleanly with no residue, leaving behind a spotless, streak-free finish that really enhances the appearance of the paint.One of the standout features is that it’s completely wax and sealant-safe, making it perfect for maintaining ceramic coatings or synthetic sealants without breaking them down. It’s also highly concentrated, so you only need a small amount per bucket, adding to the overall value.If I had to mention a minor point, it would be that because it’s a low-suds formula, it doesn’t offer the “foamy wash” experience some enthusiasts enjoy—but this is purely personal preference and doesn’t impact its cleaning power at all.Overall, Gtechniq W1 Auto Wash is a professional-grade shampoo that does exactly what it claims. It’s a high-performing, no-nonsense product that works brilliantly for regular maintenance washes. I’ll definitely be buying it again and would recommend it to anyone serious about proper car care.

Good shampoo. Foams well and cleans effectively

Really good product. Surprised if I’mHonest. Smells nice too

Great stuff to clean the motorbike with a perfect shine