The exhaust is subjected to both thermal and mechanical stresses during its life. High temperatures and acidic fumes often damage the internal walls of exhaust systems whilst corrosion and rust caused by rain and dirt on the underside of your vehicle damages the external pipes. It’s a common fact that over time older exhausts can become loose from their supports due to vibrations caused by roads and driving conditions.
Therefore, it’s important to have your exhaust checked regularly. Damage to your exhaust may cause exhaust emissions to increase, which could result in an MOT failure.