Bare in mind the differences between petrol NA and throttle less turbos.
My Fiat 500 (875cc - throttle less petrol) does 50 mpg, but maxxed out the factory fuel computer at under 8mpg on track. The fact that a (considerably) larger car's NA engine still manages ~20mpg highlights the differences. In an NA you can accelerate how you want, it practically makes no difference. If you look up NA BSFC maps you see that it's actually only a couple of percent difference no matter where on the map you drive at, as these engines were optimised for economy where people actually drive long ago.
Modern diesels need a light foot, unfortunately that makes them somewhat boring to drive compared to an NA petrol.
Last edited by oldtamiyaphile; 09-02-2017 at 10:14 PM..
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