Ok, I admit it . . . . you're right.
Even Hyundai assured me that the 'Official Fuel Consumption Figures' are meaningless and shouldn't be trusted. I'm not sure if you're allowed to publish links here so will just advise that you Google Wintons World and search for the Fuel Consumption article on that site. It shows that most manufacturers actual performance is between 15 -30% lower than the official figures they publish. In fact, in an emailed conversation with Mr.Winton he said that the Fiat 500 TwinAir he just tested achieved just 42mpg against a claimed 67mpg so Hyundai aren't the only fibbers!
Am I fed up? Of course. Even though they all lie, it doesn't make it easier to swallow. I'm stuck with 42-45mpg and if it goes up from that I guess I will be happy. Hyundai said that an LPG conversion would invalidate the warranty on the engine so I'll have to think about that one before acting. I was sure that they offered a dual fuel model in other markets.
Given that my 14 year-old Land Rover Discovery is twice the weight, and has twice the engine capacity and an automatic gearbox, and still manages to give me 32mpg, I have to wonder what progress has been made over the years. I'm spending more on fuel in my little 'economical' Hyundai than I was on the 200,000 mile Mercedes I gave up to buy it! Pah.
I'm still interested in your fuel consumption figures though, so please post them here.