well... how do i say this? it kind of depends. u see... normally
we would say yes a higher capacity car burns more fuel. that sounds
logical doesn't it? but do consider the driving styles which would
vary. one thing about smaller capacity cars is that, the engines
are actually working much harder, so in a sense, they would
actually burn more petrol to produce the same amt of bhp as a
larger capacity engine. but then, cars with larger capacity engines
tend to be bigger, and heavier, henceforth, that is why they may
have to burn more fuel, to get more power to move that extra mass.
to put all these into perspective:
a mazda RX8 with a 1.3l has a very high fuel consumption(FC)
a corolla 1.6 burns less.
a Kelisa 1l burns the least among these 3. but how do we determine
how much of the FC is due to the engine or the car's intended
usage? to get the same bhp, the smaller engine has to rev to a
higher rpm. logically, this means higher FC.
comparing a civic type R with a 1998cc engine, a Renault Cliosport
with a 1998cc engine, a Ford Racing Puma with a 1679cc engine and a
Toyota Celica T-Sport with a 1794cc engine.
the CTR (1998cc) returns a FC of 31.7mpg
the Cliosport (1998cc) returns a FC of 34.9mpg
the Racing Puma (1679cc) returns a FC of 34.7mpg
the Celica (1794cc) returns a FC of 33.6mpg
CTR n cliosport have the same CC but one has a higher FC(CTR).
Celica and Racing Puma's engine sizes are both smaller than the CTR
and cliosport but both have a higher FC than the cliosport, and a
lower FC than the CTR, while the puma has a smaller engine than the
celica but drinks less fuel. so how do we judge how these car's FCs
are affected by their engine capacities? we can't! engine capacity
is but a factor in deciding a car's FC.
Thanks, Heng.
It took me quite some time to absorb all those information
though.
My own conclusion from my own findings and your views is that a
car's FC is not neccesarily
dependent on its engine capacity. The FC
really depends on a combination of factors such as amount
of load the car is carrying, the type of
engine as well as the engine
capacity.
A combination of these factors would then determine the amount of
fuel needed to be burnt to propel the car into motion.
Do you agree?
