Renting a car in Europe is actually quite convenient, as long as you have all the necessary documents, the process is very quick. However, the rental office may upsell insurance and vehicle upgrades. Personally, I think buying full insurance at the rental office is necessary when traveling abroad—it’s more convenient than dealing with claims back home after an accident abroad. So I purchased it. As for the vehicle upgrade, since the available upgraded model was the new Mercedes C200D, and as a car enthusiast, I couldn't resist choosing it. Overall, spending money always feels worth it.