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#16
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Yes and No.
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The sedan was 25 city and 29 highway old and 22 city and 27 highway new. Based on my fuel economy, you would need to be going down hill, with a tail wind at 55 mph to come close to 35 mpg. There is no way you will get 35 mpg at 80 mph. Only the cars sold on EBay get 35 mpg highway.
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1987 300TD 309, xxx 2.8.2014 10,000 mile OCI Be careful of the toes you step on today, as they may be connected to the ass you have to kiss tomorrow. anonymous “Be who you are and say what you feel, because those who mind don’t matter, and those who matter won’t mind.” Dr. Seuss |
#17
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MPG not MPT
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While the Odometer may end up being the culprit, you need to figure out Miles driven per gallons of fuel you put in first. I thought my mileage was low initially until I figured out that my gauge reads empty when there is still 4 or 5 gallons in the tank.
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'83 300D Turrrbo 295K miles |
#18
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OTOH, my point was that the chart is not very effective for the 124 vehicles...
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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread "as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do! My drivers: 1987 190D 2.5Turbo 1987 190D 2.5Turbo 1987 190D 2.5-5SPEED!!! 1987 300TD 1987 300TD 1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere! |
#19
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Your point was correct about everything else. The 124 (.31Cd) is 27% more aerodynamic than the 123.
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1987 300TD 309, xxx 2.8.2014 10,000 mile OCI Be careful of the toes you step on today, as they may be connected to the ass you have to kiss tomorrow. anonymous “Be who you are and say what you feel, because those who mind don’t matter, and those who matter won’t mind.” Dr. Seuss |
#20
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John,
I agree that the chart data is not directly pertinent to the OP's question. I know he was referring to a 124 (and a sedan at that), while the chart data referred to a w123 wagon. I only posted the chart data as a discussion point. Here's the thing: even if the 124 is 27% more aerodynamic (where did that number come from anyway?) the decrease in fuel economy from 56 to 75 mph could still easily be as much as 20%. |
#21
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Quote:
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1987 300TD 309, xxx 2.8.2014 10,000 mile OCI Be careful of the toes you step on today, as they may be connected to the ass you have to kiss tomorrow. anonymous “Be who you are and say what you feel, because those who mind don’t matter, and those who matter won’t mind.” Dr. Seuss |
#22
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Test #2 Lower Speeds Saves Gas Result: Substantial savings on a long trip Cold Hard Facts: Up to 14 percent savings, average savings of 12 percent Recommendation: Drive the speed limit. Remember a thing called the speed limit? On most highways it is either 65 or 70 mph. How fast are the cars and trucks around you going? From 75 mph to 90 mph. These people are wasting a lot of gas for the chance to get there a little earlier. Factor in safety concerns and a speeding ticket once or twice a year and going fast is a costly proposition. Method: This test was simple. For 50 miles we drove with the cruise control set at 65 mph. Then, for another 50-mile stretch we drove with cruise set at 75 mph. We repeated this test going in the opposite direction. It is amazing how obvious the difference in gas mileage was. Just think what would have happened if we had slowed down to 60 mph. The only problem is with impatient drivers behind you. One driver became so irate that he tried to run our editor off the road. Still, if you are pinched by gas prices. Leave a little early and drive the speed limit (in the slow lane).
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1987 300TD 309, xxx 2.8.2014 10,000 mile OCI Be careful of the toes you step on today, as they may be connected to the ass you have to kiss tomorrow. anonymous “Be who you are and say what you feel, because those who mind don’t matter, and those who matter won’t mind.” Dr. Seuss |
#23
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For instance, an '87 300SDL was rated at 22/23 mpg. The previous year's federal model had ratings of 25/27 mpg. Thus, I would assume, the 300D/TD should be proportionately higher as well.
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1987 300SDL (324000) 1986 Porsche 951 (944 Turbo) (166000) 1978 Porsche 924 (99000) 1996 Nissan Pathfinder R50 (201000) |
#24
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Mileage Tips
Easy --
Many people don't really know what kind of mileage they're getting, because they are not careful about refueling. If you will buy from the same pump at the same station, trying to place the car exactly the same ... and take the nozzle out when it clicks off, instead of burping the tank -- you will come close to real mileage figures. Another easy check (air & fuel filters & tire pressures first) is whether or not you have a sticking brake -- jack up each corner & spin the tire. A slightly sticking brake caliper will have a big effect on mileage. Since diesels run unthrottled & therefore suck down a lot of air, I bet your dirty air filter is good for 2 mpg, for starters. Let us know how it goes. |
#25
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Quote:
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'83 300D Turrrbo 295K miles |
#26
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your life can be measured in minutes... however, a 50 mile trip with a 15mph increase will only net you 10 to 15 minutes, IF nothing else obstructs your commute. brian carlton said it best, if you are saving more than 3 minutes it was luck, not speed that did it.
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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread "as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do! My drivers: 1987 190D 2.5Turbo 1987 190D 2.5Turbo 1987 190D 2.5-5SPEED!!! 1987 300TD 1987 300TD 1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere! |
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