Cleaned egr a couple of times now so pretty sure it's not that, some kind of leak seems quite likely given the state of a lot of the pipework, i have the front off now as there seemed to be significant offside damage which I why I could not attach the offside lamp properly, also can see a kinked pipe underneath I presume as a result of offside contact from the front, and what looks like some radiator damage? Wondering cheapest way to get road legal, although mot said only power steering hose leak(which I cannot find) and insecure headlamp, as the problems at the front (also have to fix binding on the rear wheels but waiting for another wind back tool to tackle that)