Ceramic Coatings and Protection
CarPro CQUARTZ UK 3.0 vs Gyeon Mohs EVO
Two of the most-bought DIY coatings, from two makers who publish completely different halves of the specification sheet.
By Sawyer V. · Last verified 2026-09-10
We have not tested any of this. Everything below is compiled from published manufacturer specifications, and the arithmetic is printed so you can check it. This page carries affiliate links: if you buy through one we earn a commission at no extra cost to you, and it does not change the order of the picks. Full disclosure.
| # | Pick | Best for | Score | Price |
|---|---|---|---|---|
| 1 | CarPro CQUARTZ UK 3.0 CarPro | The only coating here that publishes its SiO2 percentage | 6.1/10 | Check price on Amazon |
| 2 | Gyeon Q² Mohs EVO Gyeon | The longest durability claim anyone here puts in writing | 6.1/10 | Check price on Amazon |
No live price is currently verified, so every button here reads Check price rather than a number we cannot stand behind. Why we do it that way.
Side by side, on published figures only
| CarPro CQUARTZ UK 3.0 | Gyeon Mohs EVO | |
|---|---|---|
| SiO2 content | 70%, 99.9% purity | Not published |
| Claimed durability | 2 to 5 years | Up to 36 months (1 layer), 48 months (2 layers) |
| Published consumption | 10ml per coat | 15-25ml per car |
| Application temperature | 40F to 90F | Not published |
| Water-free after application | Not published | 12 hours, out of direct sun |
| Sizes | 10 / 30 / 50 / 100ml | 30 / 50 / 100ml |
| List price | $59.99 (30ml kit) | Not published by Gyeon |
Two makers, two halves of a specification sheet
CarPro tell you about the chemistry and the conditions: what fraction of the liquid is silica, how pure it is, and the temperature range it is designed to be applied in. Gyeon tell you about the outcome and the quantity: how long one layer is claimed to last, what a second layer adds, and how much liquid a car takes.
Neither publishes both. That is the real comparison here, and it is more useful than arguing about which claim is bigger, because the two makers are answering different questions and a buyer usually only cares about one of them.
Where CQUARTZ is the better buy
The SiO2 figure is the only published silica percentage on the main coating roundup, and the 40F to 90F window is the specification that matters most if you coat in a garage that is not heated. CarPro also publish a list price, which Gyeon do not, so it is the only one of the two you can cost out from the maker’s own figures.
Where Mohs EVO is the better buy
Gyeon are the only maker on this site who publish what a second layer buys you: 36 months for one, 48 for two. They also publish consumption per car, which lets you size the bottle before you order it, and a 12-hour water-free window that is short enough to fit a car that lives outside. Layering has its own page.
Who should buy which
- You coat in a cold or unheated garage: CQUARTZ, because it publishes the temperature window.
- You want to size the bottle to the car before buying: Mohs EVO, because it publishes consumption per car.
- You plan two layers: Mohs EVO, the only one with a published figure for what the second layer adds.
- You want a price you can compare before checkout: CQUARTZ at $59.99; Gyeon publish none.
Every pick, with the working
Each entry lists the specifications the maker publishes, the axis scores those specifications produce, and what you give up. Rows that read “Not published” are not omissions on our side: they are figures the maker will not commit to in writing, and they cost the product points on the transparency axis.
Our pickThe only coating here that publishes its SiO2 percentage
CarPro CQUARTZ UK 3.0
CarPro
CarPro publishes 70% SiO2 at 99.9% purity, a 2 to 5 year durability range, a 10ml-per-coat consumption figure and a 40F to 90F application window. That is four hard numbers on one page, and it is four more than most of this category manages. Buy it because it is checkable, not because 70% is magic.
- Sizes
- 10ml / 30ml / 50ml / 100ml
- SiO2 content
- 70% SiO2, 99.9% purity
- Claimed durability
- 2 to 5 years
- Published consumption
- 10ml per coat
- Application temperature
- 40F to 90F
- In the box
- 30ml bottle, 4 suede applicators, block, leveling towel
- Cure time
- Not published
- Warranty
- Not published
What it does well
- 70% SiO2 at 99.9% purity, published by CarPro on the product page
- Application window published as 40F to 90F, which is the figure that decides whether your garage works in November
- 10ml per coat published, so a 30ml bottle is roughly three coats and the arithmetic is yours to do
- Kit includes suede applicators, a block and a leveling towel rather than just the bottle
Who it is not for
- The durability claim is a three-year-wide range, which is a wide range to plan around
- No cure-time figure published beyond the 2-5 minute buffing window
- Leveling is unforgiving compared with a spray coating; this is not the coating to learn on
How this score was calculated
- Protection claim4.0/10, weight 20%
- CarPro claims 24 months, scored against the 60-month ceiling this category tops out at. That is the manufacturer's claim reported here, not a durability figure anyone measured for us.
- Published SiO2 content8.3/10, weight 22%
- 70%, scored on a band running from 20 to 80. Published by CarPro.
- Cost per ounce4.4/10, weight 16%
- $59.99 for 1.01 oz works out at $59.40 an ounce, scored against a band of $20.00 (good) to $90.00 (expensive) for a ceramic coating.
- Price against the ceiling6.0/10, weight 14%
- A listed $59.99 against the $150 one upgrade in this category realistically tops out at. A list price captured on the compile date, not a live price and not what you will pay.
- Written commitmentdropped
- CarPro publishes no warranty term on this product's own page, so the axis is dropped. On a tool that is worth noticing, and it costs the product points on transparency instead.
- Spec transparency7.5/10, weight 18%
- 6 of the 8 specifications we went looking for are published by CarPro. Every blank row below is something the maker will not put in writing, and it costs the product points here.
List price $59.99 per CarPro's US store, 30ml kit, captured on the compile date below. Not a live price and not what you will pay — the button is where the real number is.
Specifications from CarPro's CQUARTZ UK 3.0 listing, compiled September 8, 2026.
2The longest durability claim anyone here puts in writing
Gyeon Q² Mohs EVO
Gyeon
Gyeon claims 36 months for one layer and 48 for two, which is the longest published figure in this ledger, and the page states a consumption rate of 15 to 25ml per car so you can work out how many cars a bottle covers before you buy it. What Gyeon does not publish is a solids or SiO2 percentage, so the number that would let you compare its chemistry to CarPro's is missing.
- Sizes
- 30ml / 50ml / 100ml
- Claimed durability
- Up to 36 months (1 layer), 48 months (2 layers)
- Published consumption
- 15-25ml per car
- Water-free period
- 12 hours, out of direct sun
- In the box
- Coating, applicator, Q²M Cure 100ml, manual
- SiO2 content
- Not published
- Application temperature range
- Not published
- List price
- Not published
What it does well
- 36 months claimed for a single layer, 48 for two, published on Gyeon's own product page
- Consumption published as 15-25ml per car, which is the figure that tells you what a 50ml bottle actually covers
- Ships with Q²M Cure, an applicator and a maintenance booklet rather than a bare bottle
- Three sizes, so a single-car job does not require the professional bottle
Who it is not for
- No SiO2 or solids percentage published anywhere on the product page
- No application temperature range published, which matters for a garage job in winter
- Gyeon does not publish a US list price, so the cost per car cannot be calculated from their own figures
How this score was calculated
- Protection claim6.0/10, weight 20%
- Gyeon claims 36 months, scored against the 60-month ceiling this category tops out at. That is the manufacturer's claim reported here, not a durability figure anyone measured for us.
- Capabilitydropped
- Gyeon does not publish a figure for published sio2 content on this product, so the axis is dropped and the remaining weights are re-normalized.
- Cost per ouncedropped
- Either the list price or the container size is unpublished, so the division cannot be done and the axis is dropped.
- Price against the ceilingdropped
- The maker publishes no list price, so there is nothing to score here and the axis is dropped.
- Written commitmentdropped
- Gyeon publishes no warranty term on this product's own page, so the axis is dropped. On a tool that is worth noticing, and it costs the product points on transparency instead.
- Spec transparency6.3/10, weight 18%
- 5 of the 8 specifications we went looking for are published by Gyeon. Every blank row below is something the maker will not put in writing, and it costs the product points here.
Specifications from Gyeon's Q² Mohs EVO product page, compiled September 8, 2026.
No live price is currently verified, so every button here reads Check price rather than a number we cannot stand behind. Why we do it that way.
Questions people actually ask
+Is CQUARTZ or Gyeon Mohs better?
+How many layers of Mohs EVO should I apply?
+How much coating does one car need?
+Can I apply CQUARTZ in cold weather?
Where these figures came from
- CarPro CQUARTZ UK 3.0 product page — retrieved 2026-09-08
- Gyeon Q² Mohs EVO product page — retrieved 2026-09-08
Every figure on this page is a published manufacturer or authorized-retailer claim, not a measurement we made. How we research explains exactly what we did and did not do.