difference between 155 Hp @ 6500 RPM and 250 Hp @ 5800 RPM and 215@6000 hp?

Question

I need to buy a car and these are the engine Specs.

Answer 1

This question dosent make a lot of sense really. judging by the "specs" you are looking at a Jap Trap so there is your problem. The rpm shouldn't be an issue unless you plan on racing it. I would think that the by the specs you are looking at a car with a 4 cylinder as the base engine and the the other two are v-6's. the six cylinders are gonna have more horsepower and torque across the whole rpm range. if it is horsepower you are worried about go with the 250 and just not worry about it. it will be the most powerful engine regardless of where it is in the rpm's

Answer 2

The horsepower is the main number you are interested. It helps indicate engine strength.
Higher RPM engines don't necessarily wear out faster if they are built right (the Acura RSX is very reliable but high revving) but you have to reach higher in the powerband to get the most out of the engine. The lower the peak RPM, the more you will notice the engine's strength in day to day driving.
In this case, the 250 hp @ 5800 is not only the most powerful engine but that power is also most accessible in daily driving.

Answer 3

Do you want the most powerful engine? In that case assume that they give you the maximum power point for each engine and the RPM that it occurs at. So the 250HP would be the most powerful - if this is your only criterion.

Answer 4

215@6000Hp you will not find a car with that , a funny car or dragster has 3 to 4000 horse power, so what kind of car could you possibly buy with 6000, it all means Torque the ratio your talking about is Torque, anything @ anything is called Torque to the drive wheels, do you have a license ?

Answer 5

high rpm wears out sooner.
5800 has more power at lower rpm, that I like.