You need to tpoint them in the direction of the sale of goods act 1979, the item being sold has to be fit for purpose and if it has dents and scaratches it clearly wasn't see below.
1-FIT FOR PURPOSE
That is a legitimate claim as long as you are using the item for the purpose for which it was intended. This is the principle of fitness for purpose. There is no point claiming that paint thinner has had adverse effects if it is not being used as paint thinner! Similarly, if you are commissioning the manufacture of a product and do not specify the purposes ,
2-SATISFACTORY QUALITY
Satisfactory quality is defined as what a ‘reasonable person’ would regard as acceptable, and takes into account factors such as price paid, fitness for purpose specified, appearance and finish, freedom from minor blemishes, safety and durability. If it becomes apparent that an item is not of the quality you were led to expect, you were not aware of any such defect when you bought it, and you bought from a seller acting ‘in the course of a business’ (i.e. not an informal sale), you are quite within your rights to go back to the retailer, even after some months of use. If a product develops a fault within the first 6 months, the assumption will be that this defect was present at the time of purchase and you will not have to prove anything. If you are returning an item after this 6 month time period, this automatic assumption does not apply, and it may be up to you to prove the fault did not occur through misuse. You should also consider aspect of durability and acceptance.
3-DURABILITY
Durability is another recent addition to the definition of quality. How long should a dishwasher or a vacuum cleaner or a printer last? This is a very common source of complaint and one which manufacturers were always quick to turn back on the consumer, requiring them to provide proof that the item did not conform to contract specification from the start, or implying an element of misuse or neglect. Thanks to the new European Regulations, UK law now offers greater protection for consumers against products which develop faults within the first 6 months. The assumption is now that if it breaks down within this time period it cannot have conformed to the contract specification when purchased and you have the right to an automatic repair or replacement. Having said this, items which should last several years can still break down after this six month period. If the retailer or manufacturer’s warranty has run out, the shop is often quick to say there is nothing they can do before attempting to sell you an extended warranty. This is misleading. If you buy something which should last 7 years but breaks down after a year and a day, you can still claim it was of poor quality in reference to the durability aspect.
So there you have it, tell them to f*ck right off, I think looking at item 2 your jeep was never satisfactory in the first instance.
