Help 06dts Mpg
Cadillac
 

Cadillac Forums | Help Us Help You | Advertise | Cadillac Parts | Cadillac News | Cadillac Classifieds / (Old System)

Cadillac Technical Archive | Cadillac Dealers | Cadillac Reviews | Cadillac Dealer Reviews | Cadillac Vendors

CadillacForums.com is the premier Cadillac Forum on the internet. Registered Users do not see the above ads.
+ Reply to Thread
Page 1 of 2 1 2 LastLast
Results 1 to 15 of 16
Northstar Engines and System Technical Discussion Discussion, Help 06dts Mpg in Cadillac Engine Technical Discussion; Got a new 06 DTS in late Sept. Started out with 16-17 MPG, lately it's 13 to 14. Same type ...
  1. #1
    2006DTSDRIVER is offline Cadillac Owners Member
    Automobile(s): Cadillac
    Join Date
    Dec 2006
    Posts
    3

    Exclamation Help 06dts Mpg

    Got a new 06 DTS in late Sept. Started out with 16-17 MPG, lately it's 13 to 14. Same type of driving. Any explanation...on the blog I keep reading about people complaining about getting 21MPG! And I'm driving calmly, no leadfoot here.
    Thanks.

  2. Remove Advertisements
    CadillacForums.com
    Advertisements
     

  3. #2
    Ranger's Avatar
    Ranger is offline Cadillac Owners Member
    Automobile(s): White Diamond '03 DHS (with DTS floor shift)
    Join Date
    Jun 2004
    Location
    Woodstock Ill.
    Age
    66
    Posts
    74,041

    Re: Help 06dts Mpg

    FPR leaking. Unlikely on a new car but stranger things have happened. What kind of driving are you doing? City?

  4. #3
    dp102288's Avatar
    dp102288 is offline Cadillac Owners Connoisseur
    Join Date
    Apr 2006
    Location
    North Brunswick, NJ
    Age
    26
    Posts
    4,236

    Re: Help 06dts Mpg

    New guy and new Caddy

    I was going to say is the weather getting very cold where you live, but Ranger's answer seems so much more correct!

  5. #4
    caddydaddy's Avatar
    caddydaddy is offline Cadillac Owners Connoisseur
    Automobile(s): 2005 Escalade 6.0L 2WD, 2007 Jeep Grand Cherokee Limited CRD
    Join Date
    Jan 2003
    Location
    Gales Ferry, CT
    Age
    33
    Posts
    3,680

    Re: Help 06dts Mpg

    I was going to say the cooler weather, and peoples tendency to let their car idle more to warm up. I'm averaging 12.5 MPG with my '94 Deville now that it's cold and I let it idle a bit to warm up. And like your DTS I do get high 20's MPG on the highway easily, but not during the Winter.

  6. #5
    dp102288's Avatar
    dp102288 is offline Cadillac Owners Connoisseur
    Join Date
    Apr 2006
    Location
    North Brunswick, NJ
    Age
    26
    Posts
    4,236

    Re: Help 06dts Mpg

    ^^ Plus the car runs "rich" for a longer peiod of time and the engine takes so much longer to fully warm up, so it is less efficient.

  7. #6
    Submariner409's Avatar
    Submariner409 is offline If it won't run, chrome it
    Automobile(s): 2002.5 F55 STS/65500mi, 2004 Ford F150 SuperCab4x4
    Join Date
    Feb 2006
    Location
    MD Eastern Shore - Kent Island
    Age
    74
    Posts
    45,084

    Re: Help 06dts Mpg

    Something's fishy....I've had my '02 STS for a year and 3 weeks. The day I bought it I reset the average mileage function and have not reset it since. With a combination of 60% highway/freeway and 40% local/city driving, I have averaged 22.3 mpg for a year, 8300 miles. Yes, the mpg goes down to 18-19 in a couple of weeks of slower driving, but crawls back up into the middle 23's during a 420 mile round trip to Norfolk, and that's using 87 octane 10% ethanol crap. (Back country road-running uses 93 octane from a non-emissions county...) We'll do a 1750-mile round trip to FL in 2 weeks, and I'll post what happens doing 85 on 95......A couple of friends own an '03 DTS, drive to FL twice a year, and average just over 26 mpg. Don't idle a modern engine with modern oils to "warm it up".......let the PCM fast idle drop to 900 or so, and then drive conservatively for 3 or 4 miles. Extended cold idling washes oil off the cylinder walls and actually leads to increased wear.

  8. #7
    dp102288's Avatar
    dp102288 is offline Cadillac Owners Connoisseur
    Join Date
    Apr 2006
    Location
    North Brunswick, NJ
    Age
    26
    Posts
    4,236

    Re: Help 06dts Mpg

    ^^ Damn you get good MPG. My 95 Eldo struggles to get 14 MPG with premium.

    But I don't do a lot of long trips with it.

  9. #8
    thu's Avatar
    thu
    thu is offline Cadillac Owners Connoisseur
    Automobile(s): 2003 STS w/BoseNav, 1993 Deville, 1985 Deville
    Join Date
    Jul 2003
    Location
    Wyoming
    Posts
    1,089

    Re: Help 06dts Mpg

    Yah, i get between 24 and 26 doing 80 in the summer. I lose a couple MPG in the winter. I normally drive 80 to 85. This is a 2003 STS.

    I use mostly mid-grade (87-89) and sometimes regular. I never use premium.

  10. #9
    dp102288's Avatar
    dp102288 is offline Cadillac Owners Connoisseur
    Join Date
    Apr 2006
    Location
    North Brunswick, NJ
    Age
    26
    Posts
    4,236

    Re: Help 06dts Mpg

    ^^ Thanks...now I feel even worse!

  11. #10
    AlBundy's Avatar
    AlBundy is offline Cadillac Owners Connoisseur
    Automobile(s): 1996 Eldorado Sport Coupe
    Join Date
    Jul 2005
    Location
    Chicago
    Posts
    4,991

    Re: Help 06dts Mpg

    Sorry dp102288 I use regular and I average 16 to 18mpg.

  12. #11
    2006DTSDRIVER is offline Cadillac Owners Member
    Automobile(s): Cadillac
    Join Date
    Dec 2006
    Posts
    3

    Re: Help 06dts Mpg

    Normal city driving with a fair amount of highway each week ... I'm in los angeles, so no cold weather idle here, and the car is garaged...it's a mystery ... it's almost as bad as the 71 Impala I had way back when ...

  13. #12
    dp102288's Avatar
    dp102288 is offline Cadillac Owners Connoisseur
    Join Date
    Apr 2006
    Location
    North Brunswick, NJ
    Age
    26
    Posts
    4,236

    Re: Help 06dts Mpg

    Quote Originally Posted by ALBUNDY View Post
    Sorry dp102288 I use regular and I average 16 to 18mpg.
    You put regular in your 96 (isn't that bad?) and still get 16-18?

    Something must be wrong with the Eldo then...

    Maybe I need to check my FPR...but the car starts great when hot. Will still check though.

  14. #13
    AlBundy's Avatar
    AlBundy is offline Cadillac Owners Connoisseur
    Automobile(s): 1996 Eldorado Sport Coupe
    Join Date
    Jul 2005
    Location
    Chicago
    Posts
    4,991

    Re: Help 06dts Mpg

    The regular vs premium wars will rage on forever dp102288. Do a search on gas or regular vs premium and you will come up with some very good info.

  15. #14
    dp102288's Avatar
    dp102288 is offline Cadillac Owners Connoisseur
    Join Date
    Apr 2006
    Location
    North Brunswick, NJ
    Age
    26
    Posts
    4,236

    Re: Help 06dts Mpg

    ^^ Will do thanks. If its anything like the oil wars I will be busy for days!

  16. #15
    thu's Avatar
    thu
    thu is offline Cadillac Owners Connoisseur
    Automobile(s): 2003 STS w/BoseNav, 1993 Deville, 1985 Deville
    Join Date
    Jul 2003
    Location
    Wyoming
    Posts
    1,089

    Re: Help 06dts Mpg

    Quote Originally Posted by dp102288 View Post
    ^^ Thanks...now I feel even worse!
    Sorry, Bro.

Quick Reply Quick Reply

Register Now

Please enter the name by which you would like to log-in and be known on this site.
If you do not want to register, fill this field only and the name will be used as user name for your post.

Please enter a password for your user account. Note that passwords are case-sensitive.

Please enter a valid email address for yourself.

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Bookmarks

Cadillac Posting Rules

  • You may post new threads
  • You may post replies
  • You may not post attachments
  • You may not edit your posts
Read about Lincoln | Buick | Kia Forte Forum
Need products for your Cadillac? Check out your options at the links below:

custom floor mats | Cadillac Chrome and Black Chrome Wheels | window tinting