Join the Car Talk Community!  My wife and I are having a
disagreement My wife...  Dear Tom and Ray:  My wife and I are
having a disagreement. My wife does a lot of highway driving,
and she insists that she needs a V-6 engine on our new car. My
opinion is that a four-cylinder engine is sufficient for the
highway. What do you think? -- Craig  RAY: Well, it really
depends on the car, Craig. It depends on the weight of the car,
the size of the cylinders and the technology of the engine,
among other things.  TOM: For example, when the Dodge Caravan
first came out, it was available with an old-fashioned 2.2-liter
four-cylinder engine. And it was a complete dog (as we say in
the business). In fact, my brother once got in trouble with
Chrysler for saying that the four-cylinder engine was
responsible for the Caravan being a seven-passenger vehicle.
(Because when you came to a hill, you needed six people to get
out and push!)  RAY: On the other hand, we've recently driven
the new Toyota Camry and the new Nissan Altima.