Recently I bought a 2004 2.5 XT Forester with 43K miles on it. I do mostly city driving, short distance. Dealer told me to put premium as it is a turbo. I am shocked with the mileage I am getting from it - 12 mpg with premium!! I am from NYC area. There must be something wrong. Also, sometimes I am getting raw gas smell, even from the cabin inside. I am not a car savvy. If I take it to the dealer, I am sure, I'll not fully understand what they are talking about. Any suggestion will be really helpful.