The fuel economy of the Seat Altea 2008 varies depending on the engine size and type. The 1.4-litre petrol engine has a fuel economy of around 44.1mpg, while the 1.6-litre petrol engine has a fuel economy of around 41.5mpg. The 2.0-litre petrol engine has a fuel economy of around 38.2mpg, while the 1.9-litre diesel engine has a fuel economy of around 50.4mpg and the 2.0-litre diesel engine has a fuel economy of around 47.9mpg.