Hi guys, I'm hoping someone on here can help me, I have a nissan primastar van and the gearbox is on its way out. My question is what is a reasonable mileage to expect from a gearbox for a commercial vehicles gearbox. My 2008 van has done 70000 miles and has a full service history. I am aware of the sale of goods act and that it should be fit for reasonable use, however 70000miles for a commercial doesnt seem to be right. Does anybody know of any claims or law suits against any vehicle manufacturer concerning gearbox lifetimes that i can use as evidence to back up my claim to nissan, or any kind of promotional material claims a gearbox should last for xxx miles. So far nissan have been completely dismissive and rejected my claim. Thanks for your help, Tim