Mpg on your SL

[elau]

I noticed that my mpg gauge somtime regesters I am getting 30 mpg on highway driving. Do you guys really think that is a accurate readout?

[Carlos Serrano]

Most definitely not

[drewmwillis]

Yeah, I think the just car wishes it got that good milage

[Strife]

Originally Posted by elau

I noticed that my mpg gauge somtime regesters I am getting 30 mpg on highway driving. Do you guys really think that is a accurate readout?

If you are coasting, beleivable. It depends on the algorithm used to calculate MPG - how much averaging over time is done. I was in my boss's infamous 8-6-4 Caddilac in the early 80's and it would register 99 MPG while coasting, and 4 while accellerating!

[jjrodger]

The mpg guage is not super-accurate, but 30mpg during steady highway driving sounds about right. I average between 17 and 27mpg from my SL500 depending on how much is urban driving and how much is cruising on the open road. At a steady 70mph I would expect to be getting instantaneous consumption readouts of about 30mpg+, otherwise I would never get mid- to upper-twenties averages. It is acceleration and stop-start driving that leads to especially high fuel consumption; steady speed driving on level ground requires very little fuel.

[kknudson]

A while back my brother and I took a long cross country cruise in his 93 Vette (6spd).
Several time while cruising we hit 30mpg on the computer. Overall for the trip we did average in the mid to upper 20s so it seems reasonable.

But that was cruising on the highway, although at 80+.

[elau]

Yes. All of my readings are on highways also. I find it interesting that some SL owners don't think the car is capable of getting better gas mileage if you drive conservatively.

The reading I get generally is on straight level highway going 75mph, top down and AC on. No passenger or luggage.

[UPSTATE NY]

Elau, why would you be driving with the top down an the AC on ?

[elau]

I leave the AC on pretty much year round. Just one of those habits

Truth is with the top down and the sun baking your head, I need the AC on so I won't melt. MD summer is extemely humid just so you know.

[Graham]

Originally Posted by elau

I leave the AC on pretty much year round. Just one of those habits

Truth is with the top down and the sun baking your head, I need the AC on so I won't melt. MD summer is extemely humid just so you know.

elau,
Don't feel bad - i drive around with the top down, windows up and the heater on full. That's what comes from living in Canada!

[TheV12pwr]

Get the horses runnin'....

Not sure if this counts, but my 80 450SL is good for between 10 and 12.999 miles per gallon........just 001 less then a bad luck number! ....BB

[Pete Geither]

Originally Posted by TheV12pwr

Get the horses runnin'....

V12,,, where did ya get them pipes ?

[TheV12pwr]

Originally Posted by PJG56

V12,,, where did ya get them pipes ?

$120 for the pair...
I can get you one.
I ordered 2 pairs and will post some photos next week when installed.
It will look something like that....

[Boudreaux]

Average computed mpg for my car is about 20-21 between fill-ups. Better mileage than a Hummer or a Suburban!!