At 21,107 km, 17 days out of its 3-year factory warranty an injector rattle started in my 2014 Toyota HiLux. Toyota replaced one injector out of good will at 24,116 km; the others were within specs.
My Mazda BT 50 2.2-litre turbo-diesel rattles excessively on cold start up, much worse under load, but the motor runs normally again once it reaches operating temperature. This rattle was not evident ...