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Whats everyones mpg's?

32993 Views 67 Replies 30 Participants Last post by  Newbiecruzer
Hey guys! New to chevy and the cruze world, pretty familiar with diesels in general though. I've had a couple mechanical injection vw's and most recently rebuilt a vw 1.9l mechanical injection engine and swapped it into my samurai. This is my first computer controlled direct injection engine and I'm pretty happy with it so far. Its not the exact car I wanted (white, hatch, diesel with mt with brown leather) but its one of the 3 manual diesels available in the province. On Friday I grabbed a 2017 cruze diesel lt with the 6 speed manual. Its the silver ice metallic with black leather interior. Until about month ago I had no idea chevy had a diesel sedan and went with it over vw mainly because of the 0% financing and that vw doesn't have any new tdi's.

So far I love the car, the electronic throttle takes a bit of getting used to and the clutch has a bit of a different feel to it but the power and economy it makes are amazing for what it is. It has way more power and is way quieter then the old mechanical vw's. The one I just built for my samurai has a 4bt turbo and a performance injection pump and its probably making around the same power but its nowhere near as refined. Its loud and shakes like crazy. I'm not too impressed with the transmission, it rides alright but I feel the gearing (mainly 6th) is off and feel like the shift light is constantly blinking at me. I've got just under 1000km on it and I filled up for the first time the other day. I got 850km to 44l which puts it just under 5.2l/100km and means the dash display was right on with its estimate. 5.2l is about 45mpg which is pretty good as I had a decent mix of city and highway driving. I'm just curious what kind of mpg everyone is seeing per tank in the real world? I'm also curious how many km's it takes for the engine to break in and if there would be any noticeable economy increase at that point?

Anyways here's my cruze the first night I got it
Land vehicle Vehicle Car Hatchback Mid-size car

and here is a pic from the dealer
Land vehicle Vehicle Car Sedan Mid-size car


No real plans to modify it much. Maybe upgrade the headlights to HID's, get the dealer to install some fogs, and when the warranty runs out I'll delete all the emissions crap and throw a tune on it. Would love it if someone brings a plug in piggyback ecu to market that wouldn't effect the warranty!
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Calling diesel exhaust fluid (DEF) a "fuel" isn't quite as accurate as referring to it as an expendable or consumption item. Yes, it does slightly increase the cost per mile driven in consumables but not much. If you really wanted to see the difference in operating costs per mile driven, you'd also want to consider differences in depreciation, insurance costs, etc. between a gas and diesel Cruze along with the consumables to get a true cost of ownership.

While it would be a touch less expensive if you didn't have to top off DEF once or twice an oil change, by using it GM was able to meet the emission requirements needed to sell this car. Without DEF there would be no North American diesel Cruze. It runs clean and still gets great mileage so I'll live with it.




Calculating 7500 miles for $20 in DEF would be $0.0027 of DEF used per mile, so even more incredibly less. :)
my post says .25 CENTS per mile

if you wanna express it as dollars, yeah, .0025 DOLLARS per mile

https://www.youtube.com/watch?v=MShv_74FNWU
 

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My mistake...thought this thread was about MPG, not CPM.

If we’re talking CPM gas vs diesel, yeah there’s the ‘whopping’ additional cost of the DEF. I’ve spent a total of $15 (US) on DEF for 15,000 miles so that’s a grand total of 1/10th of a cent per mile added to the cost of fuel.
 

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Have had my 2017 Manual for 2 months, put 6200 miles on it, and have gotten pretty much exactly 51mpg average on every tank. I did just get a check engine indicator a week ago which was diagnosed as a bad particulate matter sensor, waiting on a replacement part. Mileage has dropped a bit but I don't know if those are related or not, or if fuel quality is going down as winter approaches in the northeast here.
 

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Thanks folks for confirming my rough calculations that including DEF in mpg or dollars per mile arithmetic reduces the result by a percent or a few percent. So we should always reduce the calculated diesel mpg by an entire mpg or two to account for the DEF consumption in our cars. We can define a new ratio relating diesel consumption with DEF consumption as the DEF-consumption-constant - it might be different for each vehicle/engine/driving-condition, and it seems to be between 1% and 5% range.
We'll need a name and a Greek letter for this new constant.

DEF needs to be refilled and it gets burned up in order to make the car go more than 4 mph.
Please tell me again why DEF is not fuel and/or pony up and refill my cars DEF whenever it needs it? It's really a minor cost, not a big deal, it shouldn't be a problem for the hordes of DEF-is-not-a-fuel people to refill it on my car when necessary, you can each take a day of the week to check/refill my cars DEF as necessary. Thanks in advance !
 

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Thanks folks for confirming my rough calculations that including DEF in mpg or dollars per mile arithmetic reduces the result by a percent or a few percent. So we should always reduce the calculated diesel mpg by an entire mpg or two to account for the DEF consumption in our cars. We can define a new ratio relating diesel consumption with DEF consumption as the DEF-consumption-constant - it might be different for each vehicle/engine/driving-condition, and it seems to be between 1% and 5% range.
We'll need a name and a Greek letter for this new constant.

DEF needs to be refilled and it gets burned up in order to make the car go more than 4 mph.
Please tell me again why DEF is not fuel and/or pony up and refill my cars DEF whenever it needs it? It's really a minor cost, not a big deal, it shouldn't be a problem for the hordes of DEF-is-not-a-fuel people to refill it on my car when necessary, you can each take a day of the week to check/refill my cars DEF as necessary. Thanks in advance !
Please explain how DEF gives diesels a miles per gallon advantage over gas engines.
 

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We'll need a name and a Greek letter for this new constant.
:biglaugha:

DEF needs to be refilled and it gets burned up in order to make the car go more than 4 mph.
Please tell me again why DEF is not fuel and/or pony up and refill my cars DEF whenever it needs it? It's really a minor cost, not a big deal, it shouldn't be a problem for the hordes of DEF-is-not-a-fuel people to refill it on my car when necessary, you can each take a day of the week to check/refill my cars DEF as necessary. Thanks in advance !
:rolleyes:

DEF is not a fuel. DEF does not get burned. DEF is a consumable, but not a combustible. If you think it is a fuel, pour some in a bowl and throw matches at it until you can get it to burn or can admit it's not a fuel.
 

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:biglaugha:



:rolleyes:

DEF is not a fuel. DEF does not get burned. DEF is a consumable, but not a combustible. If you think it is a fuel, pour some in a bowl and throw matches at it until you can get it to burn or can admit it's not a fuel.
i guess you dont consider diesel a fuel either, it meets your bowl and matches criteria for not being a fuel
 

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Discussion Starter · #59 ·
def can be removed, taking diesel out of the equation and the car wont run. Sure its a consumable and added cost over a gasoline vehicle but it has nothing to do with the diesels mpg which is what we were discussing. This isn't a gas vs diesel cost comparison thread. If you want to make it that way then diesel is on average 10-20 cents a liter cheaper then gas in my area. That savings alone easily pays for def and then some. You wouldn't subtract mpg's from a gas cars average because of increased fuel costs would you? the 5-10% added cost of fuel is far more substantial then the fraction of a percent of def consumption.
 
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