Whenever I fill the car up, I can never get more than about 30 litres to go in, although the fuel tank capacity is listed as 45 litres. When I'm just going backwards and forwards to work I usually wait until the light comes on before I pop to the petrol station. The gauge always show full afterwards. I can't figure out why this would be and the dealer was drawing a blank too. I wondered if anyone else had a similar problem.