Hi everyone I am new to the forums and have owned a 2003 seat Leon 1.8 turbo car for around 8 months now. It has done 125,000 and had been a reliable car until I gave it to my brother as a first car as he passed his test.
It began leaking internally and we only realised in the morning, when the drivers side front and back areas were wet on the floor near the clutch. The car also needed its MOT and we noticed a red light was appearing on the dash and the car was eating coolant like no tomorrow.
I called out a mobile mechanic I found on Gumtree who said he was VOSA approved and had 10 years of mechanic experience. He took the car away and diagnosed the leak as coming from the sunroof and also said the cat needed a new roll bar and had a gearbox leak. He charged £175 to fix these things and also get it through the MOT.
After a week of him returning the car, the leaks come back on the driver side/front back area in the same area and I’m pretty sure that there is patches near the front of the car engine area and my brother says its still eating coolant.
I contacted the mechanic but he went quiet on me until I went down to his ‘garage’ today. He’s told me now he’s adamant the leak was coming from the roof and he will only repair the car if I come along and watch the repair and him check for a leak and he’s adamant the prior issue was the sunroof and also the coolant was leaking from a hose, so he claims now the only reason the car could be eating coolant is if the head gasket is on the way out.Since he returned the car the red light did disappear so am puzzled by why it still eats coolant..but could there be another issue separate to head gasket?
I’ve googled about the leak and apparently this is a common issue with the seat leon model and people said to check the pollen filter, which the mechanic is claiming if it was a leak would leak in a different area..and also people said its common to be the seals in the door..I just wondered if it could be the radiator causing it or any other things could be causing the problem?

Any help would be appreciated as I gave this car to my brother and as the mechanic wants me and my brother to go along with him on saturday to ‘prove he’s done the work’ after 10 days of pestering him, I wanted to go along with knowledge of the faults and not be fogged off.