Hi There I am reasonably new to this forum but have gleaned lots of helpfull information here and would like to share this potential disaster waiting to happen. I have just bought this 2017 D23 Navara Tekna 25400 miles and while checking it over for its 2nd mot in a few weeks I discovered the genuine Nissan Towbar was rusted through !!!! The problem is caused by the standard Nissan exhaust blasts straight on to the drivers side of the towbar and actually causing it to heat up and accelerate the rusting process massively, the surface rust on the rest of the chassis is really poor for a car of this year and mileage. I toyed with the idea of taking it back to the Nissan dealer to complain but thought I would be wasting my time, it has just come back from Nissan after a full service, rusty brake pipe replaced and health check !![brake fluid reservoir cap was missing and diesel spilt all over the engine compartment] I have also had to change the front discs and pads which were in a very poor condition but never picked up, no mention of the towbar. The fix for the tow bar now seems to be the end of the tail pipe will be cut back allowing me to fit a 45degree bend to reroute the exhaust gases [ebay swathed 60mm 45degree bend £13.75] and remove towbar and cut off rusted sections and reweld, this towbar is 70mm square tube. If you do a lot of towing heavy loads please check your towbar.