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Newbee here - I recently purchased a used Mercedes W212 E250 4matic with 122K miles on it. I have a question about the MPG, and hope someone can maybe answer it?
So, every time at the fuel pump, I put ~18Gallon of diesel, but it only goes for about 400miles. I use it as a daily commuter from home to work (30min drive, ~15 min freeway and ~15 min local, no traffic). Does this sound normal? the average MPG I got as shown on the car is 35.6, and my commutes generally get somewhere around that (sometimes I got ~40mpg). However, if you do the math, I should be looking at ~600miles on a tank of gas, but it only gives me ~400miles. Any thoughts?
I just have the vehicle serviced at MB dealership, and I was told the AdBlue was deleted on the car (which should not affect the mpg). No check engine light, although it does show up on two cold morning, but disappear soon after restart.
Newbee here - I recently purchased a used Mercedes W212 E250 4matic with 122K miles on it. I have a question about the MPG, and hope someone can maybe answer it?
So, every time at the fuel pump, I put ~18Gallon of diesel, but it only goes for about 400miles. I use it as a daily commuter from home to work (30min drive, ~15 min freeway and ~15 min local, no traffic). Does this sound normal? the average MPG I got as shown on the car is 35.6, and my commutes generally get somewhere around that (sometimes I got ~40mpg). However, if you do the math, I should be looking at ~600miles on a tank of gas, but it only gives me ~400miles. Any thoughts?
I just have the vehicle serviced at MB dealership, and I was told the AdBlue was deleted on the car (which should not affect the mpg). No check engine light, although it does show up on two cold morning, but disappear soon after restart.
Any thoughts/suggestions would be appreciated!
Not sure about diesels, but MPG on my gas E350 increases by about 8% when I drive the speed limit (about 5 MPH slower than used to drive). I have tested it over the long term and results are accurate. Also will depend on how much time just sitting while engine runs, jack rabbit starts, rapid acceleration, passing others, etc.
Not sure about diesels, but MPG on my gas E350 increases by about 8% when I drive the speed limit (about 5 MPH slower than used to drive). I have tested it over the long term and results are accurate. Also will depend on how much time just sitting while engine runs, jack rabbit starts, rapid acceleration, passing others, etc.
Thank you, I'd say I'm a pretty mild driver - I typically drive around the speed limit, and I also don't have the engine run when sitting there (since there is no need to do that). I also accelerate pretty mildly since I have two young kids sitting in the car with me, so yeah.. but thank you for your input!
"put egg under gas pedal and see how much farther your tank will last".
400/18=22 mpg what is very low for this engine. My average is shown in footnote, but that is for mostly city driving.
4M will shave couple of mpg, but should not be drastic.
If you are in America, your car might be subject to AEM, but with emission systems deleted it is not going to be easy.
Get your math straight and try to figure out what you have deleted on the car.
Not likely SCR is the only deleted thing. Usually delete include DPF
We do have diesel section with lot of replies about those things.
Thank you for your reply! It really confused me because on the dashboard, the car is telling me that I got an average of 35.6mpg (occasionally 42mpg for highway driving), while on the other hand, a tank of gas only gives me ~400 miles with 50/50 highway/local. I have no idea what is going on here. Regarding the adblue deletion, here is what MB dealer told me to fix when I brought it in for the AEM (See attached image as well). Thank you!TECH NOTE ADBLUE INJECTION PUMP IS MISSING AND EXHAUST WAS
MODIFIED TO DELETE ADBLUE INJECTOR. ALSO VEHICLE HAD EMISSION
COMPONENTS CODED OUT. NO CHECK ENGINE LIGHT ON
PLEASE PRICE A2124909447 WITH CLAMPS AND GASKET, ADBLUE
INJECTOR KIT, SCR TEMP SENSOR
Description
*EXHAUST GAS LINE
CLAMP
*INJECTION NOZZLE AD
*PROFILE CLAMP F EXH
*TEMPERATURE SENSOR
NOX REDUCING AGENT
I get 32 mpg when I drive it for daily commute (70/30 Highway/Local). When Mrs. MellonC drives it (10/90 Highway/Local) it's 29mpg. My local is morning commute is in the middle of Los Angeles where a good part of the driving population doesn't even have a driver's license let alone proper insurance coverage. Only about 8 miles but takes me 50 mins.
Thank you for your reply! It really confused me because on the dashboard, the car is telling me that I got an average of 35.6mpg (occasionally 42mpg for highway driving), while on the other hand, a tank of gas only gives me ~400 miles with 50/50 highway/local. I have no idea what is going on here. Regarding the adblue deletion, here is what MB dealer told me to fix when I brought it in for the AEM (See attached image as well). Thank you!TECH NOTE ADBLUE INJECTION PUMP IS MISSING AND EXHAUST WAS
MODIFIED TO DELETE ADBLUE INJECTOR. ALSO VEHICLE HAD EMISSION
COMPONENTS CODED OUT. NO CHECK ENGINE LIGHT ON
PLEASE PRICE A2124909447 WITH CLAMPS AND GASKET, ADBLUE
INJECTOR KIT, SCR TEMP SENSOR
Description
*EXHAUST GAS LINE
CLAMP
*INJECTION NOZZLE AD
*PROFILE CLAMP F EXH
*TEMPERATURE SENSOR
NOX REDUCING AGENT
Before you bought the car did you have an inspection? Something doesn't sound right here.
I found those cluster gauges pretty accurate (within 2 mpg) so yours looks pretty tricky.
Did you check for fuel leaks, as that would be the most logic explanation?
As for AEM, I reversed DPF delete on my sedan to get the check and extended warranty.
But in my case I was the one who did delete and technician could not tell anything was done till he unbolted DPF and found it hollow.
So getting new DPF got me AEM done.
In your case you have more missing. Can you contact the PO to find out what was done? The deadline for settlement is December 31, but AEM has no expiration date.
I get 32 mpg when I drive it for daily commute (70/30 Highway/Local). When Mrs. MellonC drives it (10/90 Highway/Local) it's 29mpg. My local is morning commute is in the middle of Los Angeles where a good part of the driving population doesn't even have a driver's license let alone proper insurance coverage. Only about 8 miles but takes me 50 mins.
That MPG seems to make more sense to me (and sorry for the traffic!)
I get 32 mpg when I drive it for daily commute (70/30 Highway/Local). When Mrs. MellonC drives it (10/90 Highway/Local) it's 29mpg. My local is morning commute is in the middle of Los Angeles where a good part of the driving population doesn't even have a driver's license let alone proper insurance coverage. Only about 8 miles but takes me 50 mins.
Sorry I forgot to ask - how many miles do you get out of a full tank of gas?
Before you bought the car did you have an inspection? Something doesn't sound right here.
Unfortunately, I didn't -- I bought it from a friend's friend. I think he also didn't know what happened, but I agree that something doesn't sound right here. There is no other issue though, except for two times when there was check engine light coming up at cold start, but disappear after a few minutes of running and a restart.
I found those cluster gauges pretty accurate (within 2 mpg) so yours looks pretty tricky.
Did you check for fuel leaks, as that would be the most logic explanation?
As for AEM, I reversed DPF delete on my sedan to get the check and extended warranty.
But in my case I was the one who did delete and technician could not tell anything was done till he unbolted DPF and found it hollow.
So getting new DPF got me AEM done.
In your case you have more missing. Can you contact the PO to find out what was done? The deadline for settlement is December 31, but AEM has no expiration date.
Yeah, it was kind of a weird situation - the trip computer tells me that I get 35.6mpg on average, and on my commute, I typically get somewhere between 36-40, depending on the traffic, but somehow I only get 400miles out of a full tank of gas.
It doesn't look like a fuel leak since I didn't smell anything or see anything at the bottom of the vehicle. However, I did notice that every time when I start up the car (especially after parking for a night), the fuel indicator will drop a little bit compared to the previous day, then as I drive, it will come back a little bit. Is that normal? I'm trying to figure out what could be other cause for the low gas mileage ....
I can try to contact the previous owner to see what was going on but I doubt he knows. Do you think the extended warranty is worth it? Mercedes dealer is asking for $3800 to reverse the AdBlue delete, but that mostly can be evened out by the AEM check and I basically get the warranty for a few hundred bucks. Do you think it is worth it?
Yeah, it was kind of a weird situation - the trip computer tells me that I get 35.6mpg on average, and on my commute, I typically get somewhere between 36-40, depending on the traffic, but somehow I only get 400miles out of a full tank of gas.
It doesn't look like a fuel leak since I didn't smell anything or see anything at the bottom of the vehicle. However, I did notice that every time when I start up the car (especially after parking for a night), the fuel indicator will drop a little bit compared to the previous day, then as I drive, it will come back a little bit. Is that normal? I'm trying to figure out what could be other cause for the low gas mileage ....
I can try to contact the previous owner to see what was going on but I doubt he knows. Do you think the extended warranty is worth it? Mercedes dealer is asking for $3800 to reverse the AdBlue delete, but that mostly can be evened out by the AEM check and I basically get the warranty for a few hundred bucks. Do you think it is worth it?
My fuel mileage is in my sig, 2014 e250 4matic with all emissions intact. My lowest was about 38mpg and I sat in stop and go for about 1.5hrs due to highway fatality. I dont use the eco start/stop find it annoying. I do about 50/50 freeway 70-80mph and other highway ish with stoplights and average about 40-60mph on a good day. Usually fill up at about half tank.
Distance till empty always starts off way low and builds up over time.
Are you in sport or eco mode for the trans?
With the theoretical delete theres no telling what exactly was done, almost say worth it to get things restored back to normal but then again it may not fix everything. Not sure.
Question, are your tail pipes black with soot on the indside?
My fuel mileage is in my sig, 2014 e250 4matic with all emissions intact. My lowest was about 38mpg and I sat in stop and go for about 1.5hrs due to highway fatality. I dont use the eco start/stop find it annoying. I do about 50/50 freeway 70-80mph and other highway ish with stoplights and average about 40-60mph on a good day. Usually fill up at about half tank.
Distance till empty always starts off way low and builds up over time.
Are you in sport or eco mode for the trans?
With the theoretical delete theres no telling what exactly was done, almost say worth it to get things restored back to normal but then again it may not fix everything. Not sure.
Question, are your tail pipes black with soot on the indside?
Thank you for the information. That's my impression on what the MPG should be, but somehow I very low MPG. I'm in eco mode (not equipped with start/stop). Can't imagine what it will be if I was in sport mode. I'm thinking to have it checked and see what is going on. I definitely expect much better MPG than what I'm getting now
Let me check on the tail pipes thing and get back to you. I'm actually not sure at the moment.
Sorry I forgot to ask - how many miles do you get out of a full tank of gas?
typically, either Mrs. MellonC or I will just fill up whenever we see cheaper diesel prices while driving around town. We have no problem reaching 550 miles for each tank if we ran it down until the fuel light came on..... On the highway, 700 miles per tank is easily achievable. On my recent trip to Berkeley CA, I got 41 mpg. And that's not driving the speed limit. (wink, wink)
typically, either Mrs. MellonC or I will just fill up whenever we see cheaper diesel prices while driving around town. We have no problem reaching 550 miles for each tank if we ran it down until the fuel light came on..... On the highway, 700 miles per tank is easily achievable. On my recent trip to Berkeley CA, I got 41 mpg. And that's not driving the speed limit. (wink, wink)
Just curious but what MPG did you get and only make it 550m a tank? Do all these E250s have the 21 or 22gal tank or is that an option? I usually fill up at about half a tank (10-14gals) and generally have 450-550miles on that fill up.
Didnt think about the possibility of different tank sizes until I recalled looking at my window sticker thing and thought it may be an option. Its been a while since I looked at that however.
typically, either Mrs. MellonC or I will just fill up whenever we see cheaper diesel prices while driving around town. We have no problem reaching 550 miles for each tank if we ran it down until the fuel light came on..... On the highway, 700 miles per tank is easily achievable. On my recent trip to Berkeley CA, I got 41 mpg. And that's not driving the speed limit. (wink, wink)
Thank you! That is helpful. I might need to bring the car for a check. I check the engine the other day myself, no oil leak whatsoever, no weird noise, everything seems to be working as it should, except for the poor fuel economy..
Just curious but what MPG did you get and only make it 550m a tank? Do all these E250s have the 21 or 22gal tank or is that an option? I usually fill up at about half a tank (10-14gals) and generally have 450-550miles on that fill up.
Didnt think about the possibility of different tank sizes until I recalled looking at my window sticker thing and thought it may be an option. Its been a while since I looked at that however.
That's impressive - and that is the range I was expecting on the fuel. For whatever reason, I filled it up with a full tank (~18G) and it only gets me 400 miles, yet the dashboard seems to give me the wrong mpg (average 35.6mpg over 5K miles). I was really curious what was going on ...
I assume E250s are standard with the 21G tank? Not sure though.
Just curious but what MPG did you get and only make it 550m a tank? Do all these E250s have the 21 or 22gal tank or is that an option? I usually fill up at about half a tank (10-14gals) and generally have 450-550miles on that fill up.
Didnt think about the possibility of different tank sizes until I recalled looking at my window sticker thing and thought it may be an option. Its been a while since I looked at that however.
When Mrs. MellonC drives the car, she only gets 29mpg. She has two positions with her foot. Accelerate or brake. No coasting. LOL.
That's impressive - and that is the range I was expecting on the fuel. For whatever reason, I filled it up with a full tank (~18G) and it only gets me 400 miles, yet the dashboard seems to give me the wrong mpg (average 35.6mpg over 5K miles). I was really curious what was going on ...
I assume E250s are standard with the 21G tank? Not sure though.
Yes. the fuel capacity in our cars is 21.1 gallon.
Tank only taking 18 gallons total is odd. Getting in the low 20s MPG is odd for any driving situation, except perhaps extreme stop and go traffic.
The only way that a healthy OM651 could have a 400 mile range is if the gas tank has been swapped out for one literally half the OEM spec or the tank has a serious leak. Period.
Its possible the engine is seriously out of tune. I’m not even sure this engine could get THAT out of tune and still run normally though. We’re talking a 50% reduction in highway mileage…
Something is seriously off in your car. Go get it looked at where MB/Sprinter diesel service is commonly performed with MB diagnostics available and a tech that’s familiar with the OM651 engine and latest iteration of the AEM.
Tank only taking 18 gallons total is odd. Getting in the low 20s MPG is odd for any driving situation, except perhaps extreme stop and go traffic.
The only way that a healthy OM651 could have a 400 mile range is if the gas tank has been swapped out for one literally half the OEM spec or the tank has a serious leak. Period.
Its possible the engine is seriously out of tune. I’m not even sure this engine could get THAT out of tune and still run normally though. We’re talking a 50% reduction in highway mileage…
Something is seriously off in your car. Go get it looked at where MB/Sprinter diesel service is commonly performed with MB diagnostics available and a tech that’s familiar with the OM651 engine and latest iteration of the AEM.
Thank you for your reply. Yes, this is very odd to me. I have been driving the car in the past few weeks and it has not improved as a daily commuter. I did take a road trip in early December and the car gave me about ~550 miles on the freeway. Several compounding factors: 1) the trip was from Baltimore to Pittsburgh and has a lot of hills, so lots of ups and downs; and 2) I was going mostly ~85mph one way since I was really in a rush, then on the way back I was at ~70mph. In total I made a round trip (~500miles) and did another 50miles around the city.
I did notice a new error code P0471. I probably need to have the car checked soon to figure out what it is and see whether other things went wrong. Thank you!
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