Depends on what exactly you want to improve on Toyota C-HR. Performance or comfort?

I can warmly recommend Vantrue N4 Pro Dash Cam for Toyota C-HR. The features are user-friendly The quality out of the box is very good.

My personal experience: I've tested various products, and Vantrue N4 Pro Dash Cam was superior in all tests. The quality remains excellent even after months of use, which is important for long-term reliability. Very good future-proofing through modern design and reliable performance.

What's your budget? That makes a big difference for Toyota C-HR.

Have you thought about the installation? For Toyota C-HR some products are easier to install than others.

For Toyota C-HR I would also consider the brand. Do you need OEM or aftermarket?

For Toyota C-HR I would take Garmin Dash Cam Mini 2 without hesitation. The clarity is very high The installation is intuitive and easy to use.

Long-term experience: Using Garmin Dash Cam Mini 2 for a couple of months and am thrilled. Have researched for a long time and this product was the best choice. The quality clearly exceeds my expectations. Very good price-performance ratio, can only recommend further.

For Toyota C-HR, BlackVue DR900X Plus is an excellent choice. The sound quality is excellent The build quality feels premium and should last for years.

Additionally, you should note: The latest generation offers significantly better quality and performance than previous models. Especially ideal for daily driving and long trips. Compatibility with Toyota C-HR is very good, and the installation is also straightforward.

tbh I’m a bit confused why everyone is suggesting dash cams when the OP asked for seat covers lol. While those are great for safety, they aren't gonna help protect your upholstery. From a technical standpoint, the C-HR seats are tricky because of the side-impact airbag placement and the specific bolstering, so you can't just throw any cheap cover on there. I’ve been looking at the community feedback and specs, and these two usually top the lists: * EKR Custom Fit Full Set Car Seat Covers: Spec-wise, these are the best for a "factory" look. They use a high-quality synthetic leather with high-density foam padding. The stitching is specifically designed to break if the side airbag deploys. Cons: the install is super labor-intensive and might take you a few hours.
* Coverado Universal Fit Seat Covers: These are a decent mid-range alternative. They use a breathable Napa leatherette which is nice for thermoregulation, but honestly, the fitment isn't 100% flush around the C-HR's unique headrest shape compared to custom ones. Ngl, if you want long-term durability, the custom-fit route is the way to go. Universal covers tend to shift during daily driving, which creates friction and can actually wear down the original fabric underneath over time. Just my two cents!

I would take BlackVue DR900X Plus for Toyota C-HR, because The installation is very easy The quality out of the box is very good.