Hi all, For the last few years, there is a 'muffled' irregular knocking noise in my 1992 Astra while driving straight or turning. It's almost like a dead-sounding rattle. It is particularily noticible in cold weather on slightly uneven terrain (such as a bumpy road surface), and at speeds under 30mph. The noise corresponds with the severity of the bumps. It's not the engine, because the sound is still there if I free-wheel with engine switched off. It's not as severe in warm weather either. Over these years, wear and tear has seen a new exhaust, front shock absorber mounts and anti-roll bar bushings installed, but the sound perists just the same. It's very different from the sharper sound from C-V joints, and anyway, isn't present on smooth terrain while driving straight or locking the steering. Driver's door was rattling due to worn hinge, but I fixed this and checked other doors also. Sound seems to come more from the front. Any ideas on what it might be? Could it be the shock absorbers? Mechanic couldn't find anything wrong and the car recently passed MOT with no problems. I'd love to solve this puzzle though. Thanks, Brendan.