Went out to wash the car last night (as it was filthy owing to snow and slush).
As the Jazz is so quiet in EV mode, on my way back (about 1km from home) I could actually hear that something was stuck in a tyre. This was rapidly followed by a TPMS warning wherein I knew it would be bad news (as I check my pressures weekly).
After a quick inspection, I concluded that it was inflated enough to get back - but could not see the source. And, as there was little to no traffic I limped home (checking every few hundred metres that I was still good in good shape).
Back home in the dark I re-inflated to the correct pressure, but could immediately hear air escaping. So, as it was late, I left the car in the drive and checked first thing this morning.
Aside from lovely sunshine, I was greeted by the sight of a ruddy great big screw in the centre of the rear right (currently shod with brand new Nexon winter tyres).
As this location was clearly repairable, I wanted to avoid the gunk route, opting instead to jack the Jazz up (photo attached) remove the alloy (19mm socket) and then hop in my wife's car to get a repair (£8 in total).
Back home, with alloy remounted, I torqued up to 108 nm (80 lb-ft); checked the tyre pressure and then recalibrated TPMS (no lube applied to the studs).
Wheel off, the thickness of the coating on the rear torsion beam and sub-frame seems rather good. Rear caliper design is also interesting but I don't think I'll need to touch the pads for a long time to come.
Also noticed (as I didn't check before) that the Jazz has quite a pronounced negative camber angle on the rears. All good for safe, fast handling :-)
Checking the Jazz manual, I was disappointed to find practically no information, other than use the gunk and /or consult with your dealer. That was the only downside, along with the obvious disadvantage of not having a jack, wheel brace or spare wheel available!
Mileage from new is just over 2500km, so I was quite unlucky (but rather relieved I was not further from home).