C180 merc c180 drives ok then seems as if its losing power and about to stall, any ideas?

Verify the brake level fluid & fill up if necessary!

check the trans with the engine running in park, there are two levels on the dipstick, cold and hot, personnaly i like to check it hot, as to the brake problem i need more info

Spin the barrel fuse then check the column switch.

It sounds like you have a fuel delivery issue. I would replace all of the fuel filters. Usually when you have a clogged fuel filter the car will idle fine and may drive ok at part throttle, but when you call for more power it will buck and stall out.

motor mounts

Why not try logging on the Mercedesclub. org. uk site, its free to register and there are people with far more Mercedes knowledge then you will find here
This problem would not be the first, do a search within the suggested site.
Good luck.

Most likely the switch or the fan motor it self.

I had a similar problem and the mechanic diagnosed it as a problem with the ignition coil. So you might want to get that checked.

hello.alternator need replacement, ok renew alternator it"s generate power supply to our electrical consumer,specially our engine,which fully electronic,ty

I got the same problem about a month ago.
I've changed the gearbox fluid and filter and it's OK now.