Will a blowing or noisy exhaust fail my MOT?

It can, yes. An exhaust that is blowing, leaking or excessively noisy is a common reason for an MOT failure, because the test checks that the system is secure, complete and not emitting more noise or fumes than it should. A hole in the exhaust, a corroded joint or a missing section can all mean a fail, and a leak near the front of the system can also let fumes into the cabin, which is a safety issue in its own right. The good news is that at our Leiston branch we can test and fix both tyres and exhausts in one place, so if your MOT is coming up and the car has started to sound louder underneath, it is worth getting it checked before the test rather than paying for a fail and a retest. We will tell you plainly what needs doing to pass and what it will cost first, with no pressure to agree to anything unnecessary.