N reg K11 Micra.
At mid to high revs, the car has developed a "throaty roar", coming from just behind the front seats. Power is down...it used to cruise at 65mph in top, now it does 55mph. Oil level is OK, all spark plug cables are connected, can't see any loose pipes. Only thing I can see is that a screw has corroded on the baffle in front of the exhaust manifold at the top front of the engine. The baffle is held on by one screw now, not two. I presume the baffle protects the radiator from excess heat?
I think the problem may just be a dodgy exhaust pipe under the car. Nothing seems to be dropping off, though. Can i safely run the car like this until its MOT in Sept?
Bruce