QUOTE(coolkwc @ Mar 26 2012, 10:41 AM)
1.6 and 1.3 still have different even cruising @ same 2500rpm, dun forget the extra 0.3L, fill with what? Air only ah? of course need more fuel ma...

Unless it tuned for more leaner than 1.3 version, else the FC is still higher than 1.3 one...
For sport car, if the car have 6 or 8 pistons let say, it will definitely need more fuel @ same engine speed.
Easy theory, why FLX CVT RPM is alot lower than mine BLM MT, but it still consume around same FC @ highway? Dun forget @ 110km/h, CVT @ 2600rpm, while my MT need 3600rpm leh...
So, i agree if 1.6 have same or even better FC as 1.3 @ city drive, if @ highway @ same engine speed, NO.
I suppose that is right practically between a 1.3 and 1.6 saga, but the theory is not necessarily true.
A car rolling down a hill at 2,600 RPM due to engine braking, will consume less fuel than a car going up hill at 2,600 RPM, so the same 2,600 RPM does not mean fuel consumption is the same.
The idea behind a 1.6 being more fuel efficient is that due to it's larger displacement, it takes less energy (fuel) to sustain the engine at 2,600 RPM compared to a 1.3.
FC is affected by how large and how long your throttle stays open, not just the RPM.
This post has been edited by dares: Mar 26 2012, 11:32 AM