i have only just bought as s3, and i have already had a number of problems including coil packs 1 and 3 going, and the engine management light coming on. Also i need to change the thermostat as its varying between 60 and 90, but havn't got time to change it as i booked last minute and am going on friday. Im just a bit worried because even though everything is now fixed and running fine, i haven't driven it long distance since its been fixed. What sort of checks should i carry out before leaving apart from the usual oil and water check?