For some months, my new Sept 2010 i10, 1.2 auto has made an elusive “Urr-urr, Urr-rr” noise, when on the road or engine running in "park." I ruled out the heater fan. Next I examined the cooling system to see if the expansion tank or radiator cap was faulty. No problem! Mystified, I phoned the local Hyundai retailer who supplied the car. Have you heard an i10 go, "Urr-urr, Urr-urr?" I asked. "Yes it's a faulty headlight levelling switch, which cycles the headlights up and down. Bring it in immediately." An hour later, Monday afternoon, 14 Feb 2011, all fixed, cup of coffee supplied and a tour of the ix20 whilst I waited. I can recommend Pentagon Hyundai Wakefield for their excellent sales/service. Allegedly this is a problem that caused the police to apprehend a driver for flashing their headlights.