On Tue, Aug 18, 2009 at 1:38 PM, ndungu stephen<ndungustephen@gmail.com> wrote:
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I have always wondered what benefits one gets of EFI vs VVTi
These are two totally different things, so you're not comparing like for like. An EFI engine may or may not have VVT, a VVT engine may or may not be EFI. Look at http://en.wikipedia.org/wiki/Fuel_injection and http://en.wikipedia.org/wiki/Variable_valve_timing to better understand the two and how they affect performance/economy.
-I tried to research one day if the engine capacity does correlate to the fuel consumption but came up with naught...
At a basic level, it does...
-I found out that there are more factors to consider [like efficiency] which could make a 3 litre engine consume the same fuel as the 2 litre engine over 100km.
case and point the comparison of RAV4 2008/09 vs RAV4 2003/4 vs RAV4 2001/2
True.
-Does anyone mind to illuminate ? How would one identify a fuel cost effective vehicle by looking at consumption per x km/h ?
Just by looking at the numbers. For example, a vehicle that will give you 100km for 10 litres of fuel is more economical/cost effective than that which gives you 80km for the same amount of fuel, under the same driving conditions. BR, S