na mate people over bulls**t about them just like people do on renault 5's lol...
its supposed to be 19mpg but you can get over that, im running my turbo's as non sequential, gives more fuel economy and makes it feel like a single turbo if i drive sensibly i can get 24mpg pretty easy... but at the same time if i boot it i can see 7mpg yes 7mpg pretty easy, i chased a new gtr the other day and did easily 1/2 a tank of fuel in 10 mins... plus they burn oil as part of the combustion cycle, there is a pump called the omp that sucks oil from the sump and injects it in to the combustion chamber so you need to keep an eye on oil too...
but they use mineral oil do an oil change every 3k miles and it costs 12 quid which gives you enough left over to top up over the next 3k miles...
loony is that a new stagea with a gtr front?