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Engine RPM's at 70 MPH??

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Old 12-24-10, 08:15 AM   #1
andrsnsm
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Default Engine RPM's at 70 MPH??

We have a 1999 AWD RX300 that my wife drives and I am curious how many RPM's you guys get running at 70 MPH? I was surprised that ours is running about 3000 RPM at 70. I'm used to driving a Ford Fusion that only runs about 2200 at 70 so this is new to me but I assume the AWD is a contributor.

Any information is appreciated.
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Old 12-24-10, 11:00 AM   #2
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My 2002 AWD runs around 3000 RPM @ 70.

I've always thought that the RPMs on the RX/300 were a little high, but that's the way the car is made.
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Old 12-24-10, 02:57 PM   #3
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DanDevoe is correct, that is how they were made. It would have been nice if Toyota selected a better final drive ratio....but what are you gonna do?
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Old 12-24-10, 03:05 PM   #4
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About 3000 rpms here as well. I was wondering about this for the past couple days myself.
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Old 12-24-10, 03:54 PM   #5
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The amount of drag at 70mph is tremendous on a SUV, so you have to be up on the power curve. Fuel economy starts to suck as you go to 75mph.

Lot of variables involved in the design choice.

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Old 12-24-10, 05:52 PM   #6
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Thanks guys, just checking to make sure. I am having some other issues but wanted to check on this as well.
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Old 12-24-10, 06:52 PM   #7
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Yea 3000 is about right for me.
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Old 12-31-10, 11:28 PM   #8
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Did they change the final in the 03? I am running about 77 at 3K or is my tachometer or speedometer is off.
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Old 01-01-11, 07:20 AM   #9
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Quote:
Originally Posted by varithms View Post
Did they change the final in the 03? I am running about 77 at 3K or is my tachometer or speedometer is off.
You have FWD... the others had AWD.

I too run 3k at 70, although I'm usually going much faster than that!! lol
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Old 01-03-11, 03:41 AM   #10
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Same here, around 3k at 70mph on my AWD. I thought was a little high as well, but oh well, still get around 21 mpg.
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Old 01-08-11, 08:22 PM   #11
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In contrast, my mother-in-law's 3rd generation RX350 AWD does around 2200RPMs @ 70. Makes me think that the engine in the RX300 would be subject to a shorter life...
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Old 01-08-11, 10:31 PM   #12
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^does it not have an extra gear?

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Old 01-09-11, 01:51 PM   #13
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Small transmissin 4 gears
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Old 01-09-11, 01:51 PM
 
 
 
 
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