First off, a remote start can be installed safely in a manual trans car. There is a special type that verifies the e-brake is on before allowing the car to start or something like that. My buddy is one of the only long island distributors authorized to install them. The problem is the key chip. There is not yet a bypass being produced for this car. Apparently Mercedes is very slow with this type of thing. Now a bypass can be custom wired, or you can take a key and tape it inside the console next to the ignition and be down a key. personally my friend told me my best bet is to wait a while and see if the bypass comes out. If the end of the summer rolls around and there still isn't an available bypass, I'll probably have him rig up a custom one, or go buy an extra key. But anyway, to give the short answer the manualness is not an issue, but untill the bypass comes out putting a remote start in can be costly and very difficult.