15-05-2014, 08:38 PM
Cambelt you'd get done when you have the head gasket done, knocking noise could just be the shocks if they need replacing. bulbs are a couple of quid down halfords and the airbag faulty is a common fault. Look under the driver seat and theres a plug, unplug it and plug it back in (I'd disconnect battery first just to be safe). Shocks should be easy enough to do yourself? But even still, if he's charging £3-400 for that and £400 minimum for head gasket, you definitely need to find a new mechanic!