High Revs
Sorry I meant RPMs, not idle. These cars get fantastic fuel economy. Even with a turbo CX-5 I still get 21-22 with a very heavy foot and a high amount of city driving. I also have roof rails and the wind deflectors for the sunroof and windows, so that only goes against the fuel mileage.
My wife’s rav4 turns 2000 rpm at 70 which feels and sounds relaxed. The engine size is the same also at 2.5. With higher revs comes more noise, engine wear, and decreased fuel consumption. I just don’t understand how the engineers decide on the final drive ratio? They could have made the engine more relaxed on the highway given our speed limits.
My wife’s rav4 turns 2000 rpm at 70 which feels and sounds relaxed. The engine size is the same also at 2.5. With higher revs comes more noise, engine wear, and decreased fuel consumption. I just don’t understand how the engineers decide on the final drive ratio? They could have made the engine more relaxed on the highway given our speed limits.
Not that it is a good comparison, but we all know what a C130 Hercules is, what most don't know is the engine is always at 100% throttle even when taxiing or any flying situation. That is the way the engine was engineered for maximum power and efficiency.
I should also point out that Maximum speeds limits in all states are based on the driving conditions not the sign. So just because it states 70-80MPH does not mean that that is the speed you should be doing?
The aero dynamics are really not engineered or designed into the most production for use daily drivers and speed velocities in excess of 60mph start to balance between the best safe speed with the physical laws of nature.
Thank you all for making me feel better about the rpm. I have a motorcycle that revs much higher than the Mazda lol. I think 60 is like 4000 rpm but the engine redlines at 10000 rpm. I will try not to focus on that when on a long trip.
Now one of my past BLOWN Camaros the idle speed is a rupity rupity rupity 1200-1400 and that's a smooth idle.
I also think is some check that trying to keep the engine speed low actually will in some cases increase the MPG. Believe it or not the ECU fueling mapping files on a Skyactiv engine ar4e designed for the average driver not someone that is trying to get the best MPG by old school gentleness on the throttle. You can see this if you watch the specifically the ignition timing and CAT temperatures.
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