Our 2005 Astra 1.8 Auto has just become a near write-off. The auto gearchange stopped working and when we took it to two Vauxhall garages both said that fluid had leaked from the radiator into the gearbox and wrecked it. Replacing them will cost £4,000. This isn't much less than the value of the car, which has done 35000 miles. Vauxhall has offered to pay £1,500 towards the cost. It's out of warranty so they're not contractually obliged to pay anything. But is this a rare incident and do you think the offer is reasonable?