I have checked all old coupons and price is $12.41 for Sunshade 160x86cm Windshield Sun Shade (in Banggood). You can create price alert here, copy coupons and view price history. You probably want to know what is the best price?
Sunshade 160x86cm Windshield Sun Shade for UV and Sun Protection Foldable Sunshade for Car Windshield
Latest coupon and price update (UTC):
Banggood ($12.41)
Banggood warehouse is located in China. Is it a reasonable price for this item? Maybe there’re no more promotions for this item, because current price is higher than average (which is equal $9.25) You can get coupon down below.
Link: Banggood product page
Price without coupon: $13.79
1. ($12.41): BGAMMT03
coupon code has to be applied in shop’s cart after clicking “Proceed to checkout”. Click to copy code and open shop.
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BGSCM11, BGCAR639
(sometimes old coupons work, so you can check them out (this site checks them on every price update))
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Price history and price alert
Check out price history chart (for all/most countries) for Sunshade 160x86cm Windshield Sun Shade.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood and Aliexpress (only if product name will be the same as on Banggood and I will post it on social media though, so it’s more like Banggood price alert)).