I wish I could say no it never leaks but mine has has problems with it. I find that if you dont get enough wicking it will leak, or if the tank is not tight enough it will leak (too tight and it wont wick - so its a fine line). Overall once you get the "feel" for it its very nice. Filling is a bit tricky as most will plug the drip tip, close the airflow then open the top to fill. then open in reverse order and it wont flood the coil. Even though it is a bit tricky, I still enjoy the quality of the vape and dont regret it. The top can be tight to open (i put some vg on the gasket and its much smoother now) but not everyone has had that problem. I think I got a tighter than normal top. Because of those issues, I dont take it out much because to fill it, I would rather be home where I can work patiently with it and I vape more than it holds in one day. Its a great for after dinner, relaxing, dense and flavorful vape while digesting and conversing...