Chevrolet Cruze Forums banner

Whats everyones mpg's?

32990 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!
See less
  • Like
Reactions: Cruze2.0TD
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...
See more
2
1 - 5 of 5 Posts

· Premium Member
Joined
·
2,608 Posts
Congrats and welcome!
 

· Premium Member
Joined
·
2,608 Posts
For cruze diesel, looks like we need to subtract about "2" from every reported mpg, in order to account for the mpg of the DEF. Otherwise it is not a fair comparison against the gassers, if we omit the DEF fuel that is very required in the diesel!
I’ve read and re-read this statement, not understanding at all...please clarify.

What does DEF have to do with MPG reporting? Why “subtract about “2” from every reported mpg”?
 

· Premium Member
Joined
·
2,608 Posts
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.
 

· Premium Member
Joined
·
2,608 Posts
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.
 

· Premium Member
Joined
·
2,608 Posts
Rivergoer, to answer your question about "how DEF gives diesel an mpg advantage over gas engines" . Your question contains an implicit falsehood so there can be no answer.
In fact, the mpg advantage of diesel pre-existed DEF.

But today, DEF gives new diesels a chance to exist legally on USA roads, and thus to demonstrate their improved mpg over gasoline equivalents. Without DEF & related technology there are no new diesels on USA roads.
Alrighty then.
 
  • Like
Reactions: 91794
1 - 5 of 5 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top