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1985 Porsche 911 Carrera: Milestone

Milestone Banner.jpg1985_Porsche_911_dash_120K_b.jpg 

The odometer rolled over 120,000 miles on Interstate 5 up on top of the mountains near Pyramid Lake. We were coming back from Mazda Raceway Laguna Seca, the return leg of a 750-mile trip to see the Porsche 911 GT3 R Hybrid in action at the ALMS event.

That’s 5,351.4 miles since we got the odometer working, though as Scott Oldham observed at the 119,000-mile mark, we rolled up some good miles between then and the car’s purchase in April .

We still have to do a rough-and-ready calibration of the odometer, as the speedometer is more than 5 mph optimistic at 60 mph (more like 8 mph, actually), just like all the Porsche 911s of the 1980s were. But that said, we’ve recorded an average of 20.6 mpg since June, with a best of 27.6 mpg and a worst of 14.1 mpg. Our farthest observed cruising range has been 385.6 miles.  Once we get our observed odo calibration, we’ll go back and correct these numbers.

At our last accounting, we totaled up the money we’ve spent on maintenance and repairs. The mileage exceeds the dollar amount, which is always a good sign.

We have some more distance trips planned for this car, notably Porsche Rennsport Reunion IV , which takes place at Mazda Raceway Laguna Seca October 14-16.

Michael Jordan, Executive Editor, Edmunds.com @ 120,085 miles 

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3 Comments

teampenske3 says:

03:55 PM, 09/21/11

Looking forward to the Rennsport stuff, glad to see that you're going. Will that be the furthest this car has travelled from Edmunds HQ?

sharpend says:

04:21 PM, 09/21/11

Please remember to take a boatload of pics when you're at Rennsport. Should be a great event.

equ says:

10:02 AM, 09/22/11

Odometer may not be as far off as the speedo. I have calibrated each by gps on a few cars with stock tire sizes and no odometer I have seen is more off than by 1.5% (on a bmw e39 sport, by the way). The best happens to be that of a 2006 cayman S, it's odometer matches GPS to within 0.2% or better, I just can't measure the error. The speedo on the cayman is optimistic by 1 to 1.5mph, where as the bmw has about 5% optimism built in.

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