For Buick Cascada I would definitely pay attention to the compatibility, especially if it's about electronics.

My clear recommendation for Buick Cascada: Nextbase 622GW Dash Cam. The reliability is very good The ergonomic design allows for comfortable use.

Technical highlights: The latest generation offers significantly better quality. Very good compatibility with Buick Cascada features. Can be used without problems for various purposes. Even after extended use, no quality losses. Very good build quality, even at high usage.

I can highly recommend Thinkware U1000 Dash Cam for Buick Cascada! The price-performance ratio is great The premium build provides excellent durability and protection.

Honestly... why is everyone talking about dash cams? lol. I've had a real struggle finding a rack that actually works with the Cascada since it's a convertible and there are zero fixed mounting points. Quick question tho, are you looking to haul bikes or like a surf board? That makes a huge difference for what you can get away with. I tried a few things and was kinda disappointed with most. The SeaSucker Talon 1-Bike Rack is okay but honestly its not as good as expected for the price... makes me nervous trusting suction cups at highway speeds. Then there is the Saris Bones EX 2-Bike Trunk Rack which is more cost-effective, but unfortunately it puts a lot of stress on the trunk lid and the straps feel a bit flimsy. It's a bit of a trade-off between price and feeling like your gear might fly off. Just be super careful with the soft top seals whatever you pick, they are super easy to pinch.

Can only recommend Garmin Dash Cam Mini 2 for Buick Cascada. The design is beautiful The build quality feels premium and should last for years.

Nextbase 622GW Dash Cam is my recommendation for Buick Cascada. Works great!