How do you make a car more fuel efficient? At one point it seemed that a smaller engine is the secret to that. Economy cars such as the famed Kei-class cars from Japan are well known as budget personal car offerings, and these were found with engine capacities ranging from 360cc to 660cc.
In modern times, much more has been achieved with high-tech systems such as direct fuel injection, cylinder deactivation, start-stop systems and forced-induction. Technical data sheets always show that a particular car with a smaller engine variant will have a better fuel economy. But in real world practice, you might end up accelerating and revving the engine harder just to get the car up to speed quickly enough. The situation becomes worse if you are hauling a huge load, or if the car is large and heavy - you'll end up pushing the smaller engine above its most efficient zone.
Hence, a larger engine with the assistance of a hybrid system can easily achieve the fuel consumption of a smaller conventional engine equipped car. It isn't surprising that a smaller-sized performance engine can very well consume much more petrol than a larger engine that was designed with fuel efficiency in mind.
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Source: ChannelNewsAsia - 🏆 6. / 66 Read more »
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