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2009-2014 Cadillac CTS-V General Discussion Discussion, Cars with worse fuel economy in Cadillac CTS-V Series Forum - 2009-2014; The plus side is, it don't leak......
  1. #16
    V locity's Avatar
    V locity is offline Cadillac Owners Connoisseur
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    Re: Cars with worse fuel economy

    The plus side is, it don't leak...


  2. #17
    StoneCrab is offline Cadillac Owners Fanatic
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    Re: Cars with worse fuel economy

    I bet GM experimented with different gears to beat the gas guzzler tax, but when they realized they couldn't effectively get around it they said to heck with it and made it all for performance. I think that's why the CAGS system is all but disabled - why use it if you still have the gas guzzler tax.

    Also, I understand that superchargers create more drag when not under boost than turbos. Lots or rotating mass that is at a higher rpm than the crank. Combine with low compression and you have 1970 big block equivalent mpg. Well maybe not quite that bad. Highway mpg has little to do with vehicle mass, at constant speed.
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  3. #18
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    Quote Originally Posted by quikag View Post
    You guys are forgetting the low-compression LSA engine isn't a model for efficiency even off boost. Presuming you had gearing where you could run 2,000rpm at 95mph in the CTS-V, you'd still get worse fuel economy than any Vette or previous CTS-V due to it's low compression engine, weight, and aero.

    To the OP, EPA numbers may be one thing, but I'm averaging just under 15mpg in 65% highway/35% city driving driving quite aggressively. My buddy who used to have a 2010 E63 AMG (with the seven speed auto and 6.2L NA engine) averaged 14.5mpg and he is an aggressive driver. He now owns a 2013 BMW M5 with the 7-speed dual clutch/twin turbo V8. Guess what his fuel economy average is so far with about 2,500 miles on it? Right between 15-16mpg still driving pretty aggressively. And remember, this is the new super BMW with a more efficient drivetrain.

    Horsepower and weight costs money to operate. I get excited every time I fill up with 93 octane because it means I'll get another 200-240 miles of smile-inducing fun.
    No one forgot anything. I was comparing the V1 to the Vette. The V1 was a brick and much heavier...

    ----------

    Quote Originally Posted by cdog533 View Post

    Jim, those kind of 6th gears are almost unusable and self-defeating unless you are cruising through Nebraska at 85 mph. A big ratio 6th that helps fuel economy is hard to use in everyday expressway traffic.

    I would prefer that 5th and 6th gear ratios are set up as part of a 6-speed, fully-usable transmission. Not a 5-speed, with a 6th gear massive overdrive designed to placate CAFE standards.

    The V2 has a decent 6th gear: 0.63 with a 3.73 rear end. That's decent. V1 was 0.56 with a 3.73 rear, a little worse.

    My 1994 Viper was 0.50 6th gear with a 3.07 rear final drive!!! The 6th gear was a total waste.
    Speak for yourself. I live in the Northeast and don't need what you're saying to cruise at 80 all day long. If I was doing at least 65, I'd be in 6th. Very useable. And while I like the idea of 191, I never got the V2 higher than 164, what I topped out my V1 in. So I'll take the V1 gearing...


    -- We miss you, JD (Dirt_Cheap_Fleetwood)


  4. #19
    jsherid1 is offline Cadillac Owners Fanatic
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    Re: Cars with worse fuel economy

    For my 2013 manual transmission Vagon I am averaging about 14 mpg, in similar driving my BMW M6 got 12-12.5 mpg. On the highway I get between 18-20 mpg on a run with the four of us and a labrador in the car with the AC going. I am actually pretty pleased with the mileage but wish it had a larger tank.

  5. #20
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    Quote Originally Posted by jsherid1 View Post
    For my 2013 manual transmission Vagon I am averaging about 14 mpg, in similar driving my BMW M6 got 12-12.5 mpg. On the highway I get between 18-20 mpg on a run with the four of us and a labrador in the car with the AC going. I am actually pretty pleased with the mileage but wish it had a larger tank.
    That's the consensus. Mileage we all accept, its having to stop so much that stinks. It's broken up my flow on road trips....
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    -- We miss you, JD (Dirt_Cheap_Fleetwood)


  6. #21
    Jinx is offline Cadillac Owners Connoisseur
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    Re: Cars with worse fuel economy

    Range doesn't bother me so much. Not a big deal in daily driving -- much bigger and the fuel pumps would just cut off early whenever the price of gas spikes anyway. On road trips, the human body needs breaks -- I can do 250 miles of Interstate hauling without a pause to stretch, but I regret it. With the CTS-V I figure I'll just need to top off when making the transition to two-lanes. I haven't found a lot of points on pavement that are more than a hundred miles from a gas station.

  7. #22
    jsherid1 is offline Cadillac Owners Fanatic
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    Re: Cars with worse fuel economy

    As I've said before complaining about the mileage of the V is like dating Kate Upton and complaining about the cost of birth control....
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  8. #23
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    Re: Cars with worse fuel economy

    Who buys a 4200pd+ 556hp CTS-V for mileage?

    That's like buying a prius and expecting 1G lateral acceleration and 11 second quarter mile times

  9. #24
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    Re: Cars with worse fuel economy

    Quote Originally Posted by Jinx View Post
    On road trips, the human body needs breaks -- I can do 250 miles of Interstate hauling without a pause to stretch, but I regret it.
    Speak for your own human body. I can easily do 600 miles without taking a break, maybe more, but the relevant point here is that I have to stop at the 220-240 mark usually in the V. That pisses me off when going from Vegas to LA, because that's only about 300 miles and I can't do it on a single tank. Like Jim said it's not the MPG that bothers me though, it's the range. When I'm just doing my daily commute, I have to fill up 2-3 times a week and that's also annoying. I'd like to have to fill up less often because it's an inconvenience, even if I'm spending the same amount of money per month on gas.

    That's all, it's not the end of the world or anything. It's just annoying to have to stop this often.

  10. #25
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    Re: Cars with worse fuel economy

    Quote Originally Posted by jsherid1 View Post
    As I've said before complaining about the mileage of the V is like dating Kate Upton and complaining about the cost of birth control....
    The complaint here seems to be more about how quickly the tank gets emptied...

  11. #26
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    I like to go 4-6 hours a stint. Sometimes longer if I'm really into the drive...


    -- We miss you, JD (Dirt_Cheap_Fleetwood)


  12. #27
    Dogbreath is offline Cadillac Owners Member
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    Re: Cars with worse fuel economy

    When ours gets better than 12 - 14 around town I smile an say "That's my girl!" For the amount of miles that we drive it ('09 that just turned 10K), fuel consumption is not an issue.

  13. #28
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    Re: Cars with worse fuel economy

    What's 12-14 mpg? I'm lucky to hit double digits! But then again, I drive a 6K # 500 HP brick!

  14. #29
    RaVeNous is offline Cadillac Owners Enthusiast
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    Re: Cars with worse fuel economy

    I'm not sure what you're worried about. The V gets within 1-2 mpg of all the cars you mentioned. I typically get better milage than what the V is actually rated for. 14-15mpg in town 19-21 on the hwy. It all depends on hills, weather, and how I've been driving. The same would be true for the RS5, Bimmers, and Benz that get about the same milage. In addition, many of the car you've mentioned are smaller cars, and most likely lighter weight.

    The CTS-V isn't a large luxury boat; however, it is not a small sports car, or small sports sedan like a 3 series. Its bigger than a 5 series. The E class is sligtly larger, and not heavier. You can't expect a larger sporty V at 4200-4400 to get the fuel milage of something that weights 400-600lbs less like a corvette or porsche. Thats the price you pay for the room, the ride and all of the goodies. The V to my surprise only weighs 150lb or so less than my 2012 SRT8, but feels 10x more planted and agile, while at the same time keeping the smooth ride, quite inteior, limited road noise and saftey features (although truth be told the SRT8 has better windnoise reduction than my coupe - perhaps the sedan is better).

    2014 E63 AWD 15-16/23-24
    2014 M5 17/22
    2014 M6 Grand Coup 14/20
    2013 Jaguar Supersport XJ 14-15/20-21
    2012 Panamera Turbo 15/23

    These all are all basically the same mpg as the V? All of them are marginally better mpg than a car design released in 2008. Go back and look at other cars in 2008-2009 making 560 hp in a 4400lb platform - not only was there generally nothing close to the performance of the V, cars with much worse mpg performed worse as well.
    V locity and V locity like this.

  15. #30
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    Re: Cars with worse fuel economy

    Just for fun here are some statistics for my V since I bought it 16 months ago.


    Lifetime avg. MPG: 15.97
    Max MPG per tank: 20.16
    Min MPG per tank: 12.05
    Total money spent on gas: $7,076.29
    Total miles driven: 28,429
    Total gallons pumped: 1780.27
    Total fillups: 122
    Total days: 479
    Cost per mile: $.25
    Cost per gallon: $3.97
    Cost per day: $14.77
    Cost per fillup: $58.00
    Gallons per fillup: 14.59
    Miles per fillup: 233.02
    Miles per day (including weekends): 59.35
    Miles per dollar: 4.02

    mpggraph.jpg

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