I have an Hyundai Amica, 18 months old, less than 6K. Two weeks ago the air conditioning packed in, I went to the dealer and for £75 they replaced the gas. Within 10 days it had gone again. When they examined it again they found the radiator was leaking at the front. They say the damage was caused by chippings flying up into the radiator - hence not covered under warranty. New radiator around £500. Anyone else had a similar problem?