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#1
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'05/'06 E320 CDI MPG @ Start up?
My '06 E320 CDI's mpg @ start up, according to the onboard computer, had been just a tad over 30 mpg for as long as I can remember. Recently, it's running 25 +/- @ start up. Wondering what the trouble may be, as well as what other like CDIs are running here?
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#2
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Quote:
(Sorry about that - needed a bit of fun) I imagine the read out on your gauge is based on several parameters such as outside air temperature. If the car "thinks" it is cold perhaps it becomes less hopeful about your MPG possibilities?
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1992 W201 190E 1.8 171,000 km - Daily driver 1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone 1965 Land Rover Series 2a Station Wagon CIS recovery therapy! 1961 Volvo PV544 Bare metal rat rod-ish thing I'm here to chat about cars and to help others - I'm not here "to always be right" like an internet warrior Don't leave that there - I'll take it to bits! |
#3
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I'm hoping its not "Man is it ever expensive to drive an economical car" scenario!
Outside air temp plays a role as I've observed on other vechiles equipped with mileage consumption displays.
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92 e300d2.5t 01 e320 05 cdi 85 chev c10 |
#4
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Skid Row
I usually start up at around 27. I do insert a flexible foil covered Styrofoam sheet just before the radiator. It has been my experience that diesels have a hard time staying warm during winter and it plays havoc with the milage.
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06 MB E320 CDI 123k miles 14 Sienna (wife's DD) 36k miles 11 GL350 Bluetec 136k (Sold) 96 E300; 292k+ miles (Donated) 11 Sprinter 22K+ miles (Sold) |
#5
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On a summer day, my 11 miles commute to work will reflect about 34mpg. It takes about 3 miles to get to temp. On a winter day, that 11 mile trip will only be about 26mpg, taking much longer... perhaps 8 miles to get up to temp. Having said that, when my thermostat broke and was stuck open, the mileage plummeted, getting as low as 17 on a tankful. I was amazed at how much difference a stuck tstat made.
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Mark in MA 05 MB E320CDI 402k Granite Grey Metallic 05 MB E320CDI 267k Black 05 MB E320CDI 232k White 05 MB E320CDI 209k Tectite Grey 99 Dodge 2500 Cummins 5sp 148k 62 Jeep CJ-6 120k |
#6
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I have observed the same on my 05, and my wife's 06. I have attributed it to Winterized diesel. a lower BTU content because of the #1 oil blended with the #2. I have no idea if it is sold in your part of the country, but it would make sense to send the same blend everywhere, plus, with an 800 mile range on some diesels (like ours), you can get to somewhere cold where you would need that in your tank.
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1959 Gravely LI, 1963 Gravely L8, 1973 Gravely C12 1982 380SL 1978 450 SEL 6.9 euro restoration at 63% and climbing 1987 300 D 2005 CDI European Delivery 2006 CDI Handed down to daughter 2007 GL CDI. Wifes |
#7
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Today @ 50F......
Indicated 31.4 mpg @ start-up cold in my garage. mpg dropped precipitously as I started my 3 mile drive to 24 or so mpg. Must be the colder temps. at start up that drop it (mpg) so rapidly. The water temp. edges Up very slowly to normal operating temp. in the Wintertime.
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