Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Didn't work for volvo and bmw--and even worse

I tried using this siphon to get gas from my Volvo and from my BMW.It didn't work for either vehicle. Furthermore, as I was removing the siphon from my BMW, the valve at the bottom became stuck and wouldn't come out. I had to visit a mechanic to take it out. . .Based on the physics involved, I'm sure this product would work fine in other applications, but I would advise against trying to use it to siphon gas from cars.