Loud bang while driving my 2007 Jaguar X-Type 2.2 Diesel. I am experiencing a loss of power, sounds like exhaust has blown but may be turbo related. Difficult to see under car.
An exhaust leak behind the catalytic converter would be loud and noisy but would not hinder the performance. So an exhaust leak would need to be closer to the engine. Perhaps an exhaust manifold gasket or a turbo related issue. Either way it will require closely looking for signs of a leak. Hard to tell what the loud bang would be. Is it still making the bang noise now or was it a one time thing? You may have run over something causing a loud bang and now have a damaged exhaust system. If the exhaust was smashed it would cause a loss of power.