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6 cylinders means more power, torque than 4 cylinders. It depends on the needs again, most fast cars has 6 cylinders or more.

Obviously more power = more gas.

Philip

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Whether it is NA, Force Induction, there are reasons for putting different types of engines in different cars. Performance or ride comfort and applications are biggest reason I guess.

Generally, you want to pick a car depend on driving habit (majority on city or highway, stop & go, etc) and needs.

Especially with the high gas price these days, there's absolutely no reason to buy a SUV when you are driving alone or carry only 1 pessenger most of the time.

To combat high gas price and keep the maintanance low, I have an Odyssey, Mazda3 and Versa in our family (we need some stuff to write off for my parents' business); for city driving, going to work, I use the Versa because it is light and very flexible, thus saving a lot of gas even in stop and go traffic. Mazda3 is my toy, that doesn't count.   I only use the Odyssey when I have visitors and need to haul a lot of stuff. Out of the 3 cars, the Odyssey uses the most gas 15L/100KM. However, once on the highway, the Odyssey save a lot more gas caz the engine is powerful enough that it only requires little work to keep it at 100kph (higher RPM = more gas used). It deactivate 3 cylinders automatically at crusing speed and that keeps the consumption low. On the other hand, I have to push the pedel harder on the Versa to keep it up to 100kph. 3 different cars for various purposes. In no way I will drive my Odyssey in busy streets during peak hour.

Maybe my answer is irrevelent to the topic, I think cylinders are not so important when buying a car today.

Philip

[ 本帖最後由 pkphilip 於 2008-6-1 12:37 編輯 ]

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According to Wiki:

In 2004, Honda introduced an i-VTEC V6 (an update of the J-series), but in this case, i-VTEC had nothing to do with cam phasing. Instead, i-VTEC referred to Honda's cylinder deactivation technology which closes the valves on one bank of (3) cylinders during light load and low speed (below 80 mph) operation. The technology was originally introduced to the US on the Honda Odyssey minivan, and can now be found on the Honda Accord Hybrid and the 2006 Honda Pilot.

Philip

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