Exhaust
11-1 Exhaust system
Reasons for rejection
Mandatory equipment
1. A vehicle is not fitted with an exhaust system that includes a means of sound reduction (Note 1).
Condition
2. The exhaust system is not securely mounted.
3. The exhaust system is so constructed or modified that its operation or effectiveness can be readily interfered with.
4. The exhaust system is so constructed that emitted heat or fumes are likely to harm vehicle occupants, eg the exhaust gases are not directed away from the perimeter of the vehicle’s passenger compartment.
Performance
5. There is a leak of exhaust fumes from the exhaust system.
6. The noise output is noticeably and significantly louder than it would have been when the vehicle was manufactured with its original exhaust system.
Note 1
Exhaust system means a pipe assembly through which the engine exhaust gases pass to the atmosphere and includes some means of sound reduction such as a silencer or resonator.
Note 2
A spark arrestor is not required to be checked.
Summary of legislation
Applicable legislation
Mandatory equipment
1. A vehicle with an internal combustion engine must be fitted with an exhaust system (Note 1).
Condition
2. An exhaust system must not be constructed or modified in a way that allows a person to interfere readily with its operation or reduce its effectiveness.
3. An exhaust system must be designed, constructed, positioned and maintained in a way that minimises the risk of heat or fumes emitted from the system harming the vehicle’s occupants.
Performance
4. An exhaust system must be effective and in good working order.
5. Noise from an exhaust system must not be noticeably and significantly louder than it would have been when the vehicle was manufactured with its original exhaust system.