Have had a slight glitch with the GTi so thought I'd share my experience. Randomly, indicated temperature would rise quickly, engine alarm would go, then gauge would drop back to normal.Took it to the dealer, diagnosed that it was a faulty temp sensor, but none in stock in Brisbane. They arranged for one to come overnight from Melbourne, and made alternate travel arrangements for me for 24 hours. Great service and all fixed under warranty. No cost, just a little inconvenience.