I am looking at buying a Renault Megane 2005 1.4 petrol. The car looks in very good condition but it has a subtle squeak if I release the clutch pedal too suddenly ... this is either on gearing up or gearing down ( engine braking ). I gave the clutch itself a good run through the common tests like bite point, stalling the engine in 3rd, etc and it did seem to be fine to me, so I don't think it is that but I could be wrong. It sounded like it could be a squeaky engine mount to me. Has anyone got any options or experience with this.
Fortunately from your description, it sounds like more of an annoyance than a real problem. It could be any one of numerous mounts/bushing on the car which are causing this. Finding it would be a real pain. If you like the car and can put up with the squeak, I'd bet it's nothing to worry about. It's not the throw out bearing or the clutch, because the noise would be louder and happen at different times. This leaves the suspension and motor mounts.
Your Megane can have a four speed or a five speed box. This means the clutch can be cable operated or hydraulic operated. On a cable clutch you can have squeaks from the clutch pedal bushing, the cable attachment at the pedal, and also from the cable itself. The cable wears internally on bends in the cable. The inner cable cuts through its neoprene inner tubing and rubs on the outer cable. The hydraulic system has inside the car the same type of bushing and attachment and can squeak. In addition, the push rod on the slave cylinder on the gearbox is metal and pushes against the release lever, which is also metal. These too can squeak when dry.