A pipe arrangement 107 has a pipe means 201 defining a duct 202, where exhaust gases are received at an inlet end 203 of the duct and guided to an outlet end 204. A space 214 is defined between the pipe means and a wall 213. A first aperture 229 provides fluid communication between the duct and the space. A second aperture 216 provides fluid communication between the space and a pressure sensor 111. The pipe means may comprise a first pipe 205 extending from the inlet to the first aperture and a second pipe 206 extending from the first aperture to the outlet. The wall may extend around the outside of the pipe means and support the pipe means. An exhaust system (104, fig 1) comprises the pipe arrangement and a particulate filter 108 at the outlet end of the duct. A vehicle (101, fig 1) comprises an exhaust system having the pipe arrangement.
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