i was going to suggest
"perhaps Volvo publish the TRUE mpg figures"
,,beaten to it
if your bothered about the pollution chucked out the tail pipe at all, Dont buy a diesel.
they Are not "clean" and chuck out skipfulls of really "not good" things, despite all the UTTER BS spouted by those driving them. This has been Known since the mid 80s. and ignored by manufs and sheeple ever since
"dpf" doesnt matter "clean + diesiel" is not possible,