We had an interesting experience with a Budget hire car in Mexico. It was fairly ****ed when we picked it up, and to be fair we did put a few extra dings in it by off-roading at high altitude and getting into a few scrapes, but when we got back to Cancun, the Budget staff literally pulled parts off the car, then pointed to other pre-existing defects, and claimed we had done all of it ourselves. We were made to pay a fortune before we could leave.
Two lessons:
1) while they check the vehicle for damage a couple of hours before your scheduled flight back to Britain, don't let the feckers hold on to your PASSPORTS! :icon_eek:
2) if this happens, and you're forced to pay a huge amount of money just to get out of the car hire place and leave the country, complain in the strongest possible tems to the UK office (if it's a global firm as most of them are). They may, as in our case, give you a full refund for the entire three week rental price! :icon_bigg